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WO2025146825A1 - Stable sun care composition - Google Patents

Stable sun care composition Download PDF

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Publication number
WO2025146825A1
WO2025146825A1 PCT/JP2024/080239 JP2024080239W WO2025146825A1 WO 2025146825 A1 WO2025146825 A1 WO 2025146825A1 JP 2024080239 W JP2024080239 W JP 2024080239W WO 2025146825 A1 WO2025146825 A1 WO 2025146825A1
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WO
WIPO (PCT)
Prior art keywords
weight
composition
composition according
organic
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/080239
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French (fr)
Inventor
Tomomi HAMAZAKI
Toru Koike
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LOreal SA
Original Assignee
LOreal SA
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Filing date
Publication date
Priority claimed from JP2024000781A external-priority patent/JP2025107056A/en
Priority claimed from FR2401520A external-priority patent/FR3159331A3/en
Application filed by LOreal SA filed Critical LOreal SA
Publication of WO2025146825A1 publication Critical patent/WO2025146825A1/en
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/06Emulsions
    • A61K8/062Oil-in-water emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/29Titanium; Compounds thereof
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37Esters of carboxylic acids
    • A61K8/375Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/18Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A61K8/8141Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides or nitriles thereof; Compositions of derivatives of such polymers
    • A61K8/8152Homopolymers or copolymers of esters, e.g. (meth)acrylic acid esters; Compositions of derivatives of such polymers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00Barrier preparations; Preparations brought into direct contact with the skin for affording protection against external influences, e.g. sunlight, X-rays or other harmful rays, corrosive materials, bacteria or insect stings
    • A61Q17/04Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Definitions

  • the present invention relates to a composition, preferably a cosmetic composition, and more preferably a stable sun care cosmetic composition having improved cosmetic sensations.
  • Imparting a comfortable texture to skin is one of the key features of cosmetic products, in particular sun care cosmetic products.
  • compositions which is unstable and easily causes a collapse of the structure of the composition often provides a comfortable feel on use. This means that it is difficult to provide both a comfortable feel on use and good stability at the same time.
  • IP Hl 1-246379A discloses a sunscreen cosmetic including ingredients (A) ethanol, (B) starch powder and/or silicic add anhydride having an average primary particle diameter of 1 pm or larger, and (C) a UV light-scattering agent and/or a UV light-absorbing agent
  • WO 2007/144670 discloses a skincare composition in the form of an emulsion comprising: a) an organic sunscreen component comprising at least one sunscreen selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine and methylene bis-benzotriazolyl tetramethylbutylphenol; b) a moisturising system comprising starch or a derivative thereof and a polymeric quaternary compound salt having humectant properties; and c) a carrier comprising an oil phase, an aqueous phase and an emulsifying system, said emulsifying system comprising at least one emulsifier selected from an anionic or non-ionic emulsifier.
  • an organic sunscreen component comprising at least one sunscreen selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine and methylene bis-benzotriazolyl tetramethylbutylphenol
  • WO 2017/103083 discloses a composition, especially for caring for and/or making up keratin materials, comprising at least one aqueous phase containing at least:
  • composition preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising:
  • the (a) UV filter may comprise at least one organic UV filter and at least one inorganic UV filter
  • the organic UV filter may comprise a combination of at least one organic UV-A filter, at least one organic UV-B filter, and at least one organic UV-A and UV-B filter.
  • the organic UV filter may be selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoylmethane canpounds, such as butyl methoxydibenzoylmethane; bis-resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof
  • the inorganic UV filter may be selected from metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof.
  • the amount of the organic UV filters) in the composition may range from 2.5% to 25% by weight, preferably from 5% to 20% by weight, and more preferably from 7.5% to 15% by weight, relative to the total weight of fee composition.
  • the amount of the inorganic UV filters) in the composition may range from 0.5% to 15% by weight, preferably from 1% to 10% by weight, and more preferably from 1.5% to 5% by weight, relative to the total weight of the corpposition.
  • the (b) associative polymer may comprise one or more (mefejacrylic acid (C1-C12) alkyl ester units.
  • the amount of the (b) associative polymer(s) in fee composition may range from 0.1% to 5% by weight, preferably from 0.3% to 3% by weight, and more preferably from 0.5% to 1% by weight relative to fee total weight of the composition.
  • the amount of the (c) polyglyceryl fatty acid ester(s) in the composition may range from 0.1% to 3% by weight, preferably from 0.3% to 2% by weight, and more preferably from 0.5% to 1% by weight relative to the total weight of the composition.
  • the (d) organic filler may be selected from polysaccharides, preferably from starches, and in particular from com (zea mays) starches.
  • the amount of the (d) organic fillers) in the composition may range from 0.1% to 10% by wdght, preferably from 1% to 7% by weight, and more preferably from 2% to 5% by weight relative to the total weight of the composition.
  • composition may be in the form of emulsion, preferably O/W emulsion.
  • the present invention also relates to a cosmetic process for treating a keratin substance, comprising the step of applying the composition according to the present invention to the keratin substance.
  • compositions comprising (a) at least one UV filter with improved stability as well as improved cosmetic effects such as no or a reduced oily/greasy feeling and light/fresh sensation, thus completed the invention.
  • one aspect of the present invention is a composition comprising:
  • composition according to the present invention is stable and can provide no or a reduced oily/greasy feeling, and improved light and/or fresh sensation during application.
  • composition according to the present invention is stable just after the preparation of the composition and for a long time after the preparation of the composition thanks for an increased viscosity.
  • the composition according to the present invention can provide an excellent feeling to touch, in particular on feeling of the skin during and after application of the composition. Therefore, the composition according to the present invention is very suitable for cosmetic topical compositions for keratinous substances, such as skin.
  • composition according to the present invention and the like will be explained in a more detailed manner.
  • the composition according to the present invention can be a cosmetic composition, preferably a cosmetic composition for keratinous substance, such as skin, and more preferably a sun care composition for keratinous substance, such as skin.
  • the composition according to the present invention may be intended for use as a cosmetic topical composition.
  • the keratinous substance here means a material containing keratin as a main constituent element, and examples thereof include the skin, scalp, lips, and the like.
  • the composition of the present invention is used for skin.
  • composition according to the present invention includes (a) at least one UV filler, (b) at least one associative polymer comprising one or more acrylic and/or methacrylic units; (c) at least one polyglyceryl fatty add ester, and (d) at least one organic filler.
  • composition according to the present invention comprises (a) at least one UV filter. Two or more UV filters may be used in combination. Thus, a single type ofUV filter or a combination of different types ofUV filters may be used.
  • the (a) UV filter is selected from organic UV filters, inorganic UV filters, and combination thereof.
  • the (a) UV filter comprises at least one organic UV filter, at least one inorganic UV filters, or combination thereof.
  • the organic UV filter of the present invention is lipophilic or hydrophilic, and preferably lipophilic.
  • lipophilic here means materials which are soluble in oils at a concentration of at least 1% by weight relative to the total weight of the oils at room temperature (25°C) and atmosphere pressure (10 5 Pa).
  • hydrophilic here means materials which are soluble in water at a concentration of 1% by weight or more relative to the total weight of the water at room temperature (25°C) and atmospheric pressure (10 5 Pa).
  • the organic UV filter may be solid or liquid.
  • solid and liquid mean solid and liquid, at room temperature (25°C) and atmosphere pressure (10 s Pa).
  • the organic UV filters) used for the present invention may be active in the UV-A and/or UV-B region, preferably in each of the organic UV-A and UV-B regions alone or in combination.
  • the organic UV-A filters used in the present invention may include, but are not limited to, aminobenzophenone compounds, dibenzoylmethane compounds, anthranilic arid compounds, and 4,4-diarylbutadiene compounds.
  • n-hexyl 2-(4-diethlamino-2- hydroxybenzoyl)benzoate the alternative name of which is diethylamino hydroxybenzoyl hexyl benzoate (DHHB), sold under the trade name “Uvinul A+” from BASF.
  • DHHB diethylamino hydroxybenzoyl hexyl benzoate
  • dibenzoylmethane compounds mention can be made of 4-isopropyldibenzoylmethane, sold under the name of “Eusolex 8020” from Merck, l-(4-methoxy-l-benzofuran-5-yl)-3-phenylpropane- 13 -dione, sold under the name of ‘Pongamol” from Quest, l-(4-(tert-butyl)phenyl)-3-(2- hydroxyphenyl)propane- 1,3 -dione, and butyl methoxydibenzoylmethane, sold under the trade name "Parsol 1789” from Hoffinann-La Roche.
  • 4,4-diarylbutadiene compounds mention can be made of 1,1-dicarboxy (2,2'-dimethylpropyl)- 4,4-diphenylbutadiene and diphenyl butadiene malonates and malononitriles.
  • ethylhexyl methoxycinnamate marketed under the name ‘TARSOL CX” by DSM NUTRITIONAL PRODUCTS
  • isopropyl ethoxy cinnamate isoamyl methoxy cinnamate, marketed under the name “NEO HELIOPAN E 1000” by Symrise, diisopropyl methylcinnamate, cinoxate, and glyceryl ethylhexanoate dimethoxycinnamate.
  • ⁇ , ⁇ -diphenylacrylate compounds mention can be made of octocrylene, marketed under the name “UVINUL N539” by BASF, and etocrylene, marketed under the name ‘UVINUL N35” by BASF.
  • benzylidenecamphor compounds mention can be made of 3-benzylidene camphor, marketed under the name “MEXORYL SD” from CHIMEX, methylbenzylidene camphor, marketed under the name “EUSOLEX 6300” by MERCK, polyacrylamidomethyl benzylidene Camphor, marketed under the name “MEXORYL SW” by CHIMEX, and terephihalylidene dicamphor sulfonic acid, marketed undo- the name “Mexoryl SX” by Chimex.
  • MEXORYL SD 3-benzylidene camphor
  • methylbenzylidene camphor marketed under the name “EUSOLEX 6300” by MERCK
  • polyacrylamidomethyl benzylidene Camphor marketed under the name “MEXORYL SW” by CHIMEX
  • terephihalylidene dicamphor sulfonic acid marketed undo- the name “Mexoryl S
  • phenylbenzimidazole unds, mention can be made of phenythenzimidazole sulfonic add, marketed under the name “Eusolex 232” by Merck, and disodium phenyl dibenzimidazole tetrasulfonate, marketed under the name “Neo Heliopan AP” by Haarmann and Reimer.
  • imidazoline compounds mention can be made of ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate.
  • benzalmalonate compounds mention can be made of polyorganosiloxane containing a benzalmalonate moiety, for example, Polysilicone-15, marketed undo- the name ‘Tarsol SLX” by DSM NUTRITIONAL PRODUCTS, and di-neopentyl 4'-methoxybenzalmalonate.
  • the organic UV filters of the present invention may comprise lipophilic organic UV-Aand UV-B filters, which cover UV-Aand UV-B regions.
  • lipophilic organic UV-A and UV-B filters are non-limiting examples of the lipophilic organic UV-A and UV-B filters:
  • benzophenone compounds sudi as benzophenone- 1 marketed under the name “UVINUL 400” by BASF, benzophenone-2 marketed under the name “UVINUL 500” by BASF, benzophenone-3 or oxybenzone marketed under the name “UVINUL M40” by BASF, benzophenone-6 marketed under the name “Helisorb 11” by Norquay, benzophenone-8 marketed under the name “Spectra-Sorb UV- 24” by American Cyanamid, benzophenone-10,benzophenone-ll, and benzophenone- 12;
  • the organic UV filter may be selected firm aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, sudi as ethylhexyl triazone; dibenzoylmethane compounds, sudi as butyl methoxydibenzoylmethane; bis-resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof
  • DHHB diethylamino hydroxybenzoyl hexyl benzoate
  • triazine compounds sudi as ethylhexyl triazone
  • dibenzoylmethane compounds sudi as butyl methoxydibenzoylmethane
  • the organic UV filter of the present invention comprises a combination of at least one organic UV- A filter and at least one organic UV-B filter.
  • the organic UV filter of the present invention comprises a combination of at least one organic UV-A filler, at least one organic UV-B filter, and at least one organic UV-A and UV-B filler.
  • the amount of the organic UV filters) in the composition according to the present invention may be 2.5% by weight or more, preferably 5% by weight or mere, and more preferably 7.5% by weight or more, relative to the total weight of the composition.
  • the amount of the organic UV filters) in the composition according to the present invention may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition.
  • the amount of the organic UV filters) in the composition according to the present invention may be fiom 2.5% to 25% by weight, preferably from 5% to 20% by weight, and more preferably fiom 7.5% to 15% by weight, relative to the total weight of the composition.
  • the inorganic UV filter used for the present invention may be active in the UV- A and/or UV-B region.
  • the inorganic UV filler be in the form of a fine particle such that the mean (primary) particle diameter thereof ranges from 1 nm to 200 nm, preferably 5 nm to 150 nm, and more preferably 10 nm to 100 nm.
  • the mean (primary) particle size or mean (primary) particle diameter here is an arithmetic mean diameter.
  • the (b) inorganic UV filters may have mean size of the primary particles ranging fiom 5 nm to 80 nm, preferably from 10 nm to 50 nm.
  • volume-average size mean diameter which is given by the statistical particle size distribution to half of the population, referred to as Dso.
  • the volume-average size mean diameter can be measured by a laser diffraction particle size distribution analyzer, such as Mastersizer 2000 by Malvern Corp.
  • the inorganic UV filter can be selected fiom the group consisting of silicon carbide, metal oxides which may or may not be coated, and mixtures thereof.
  • the inorganic UV filter is formed of metal oxides, such as, titanium dioxide (amorphous or crystalline in the rutile and/or anatase form), iron oxide, zinc oxide, zirconium oxide or cerium oxide, which are all UV photoprotective agents that are well known per se.
  • the inorganic UV filters may be selected from titanium dioxide (TiO 2 ), zinc oxide, and more preferably titanium dioxide.
  • the inorganic UV filter may or may not be coated.
  • the inorganic UV filter may have at least one coating.
  • the coating may comprise at least one compound selected fiom the group consisting of alumina, silica, aluminum hydroxide, silicones, silanes, fatty adds or salts thereof (such as sodium, potassium, zinc, iron, or aluminum salts), fatty alcohols, lecithin, amino adds, polysaccharides, proteins, alkanolamines, waxes such as beeswax, (meth)acrylic polymers, organic UV filters, and (per)fluoro compounds.
  • the coating includes at least one organic UV filter.
  • a dibenzoylmethane derivative such as butyl methoxydibenzoylmethane (Avobenzone) and 2,2'-Methylenebis[6-(2H-Benzotriazol-2-yl)-4-(1,133-Tetramethyl-Butyl)Phenol] (Methylene Bis- Benzotriazolyl Tetramethylbutylphenol) marketed as “TINOSORB M” by BASF may be preferable.
  • the (b) associative polymer can function as a thickener.
  • sociative polymer refers to homopolymers or copolymers that are capable, in an aqueous medium, of reversibly combining with each other or with other molecules.
  • the (b) associative polymer used for the present invention is preferably an associative copolymer of one or more acrylic and/or methacrylic units and of other units.
  • the (b) associative polymer more particularly comprises at least one hydrophilic part and at least one hydrophobic part.
  • hydrophobic group means a radical or polymer with a saturated or unsaturated, linear or branched hydrocarbon-based chain, comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms, in particular from 12 to 30 carbon atoms and more preferentially from 16 to 30 carbon atoms.
  • the (b) associative polymer may comprise further units such as units formed by an alkyl ester of acrylic acid or methacrylic acid, preferably of acrylic acid, comprising less than 6 carbon atoms: for example, a C 1 -C 4 alkylacrylate, for example, chosen from methyl acrylate, ethyl acrylate and butyl acrylate, called hereinafter "simple ester".
  • an alkyl ester of acrylic acid or methacrylic acid preferably of acrylic acid, comprising less than 6 carbon atoms: for example, a C 1 -C 4 alkylacrylate, for example, chosen from methyl acrylate, ethyl acrylate and butyl acrylate, called hereinafter "simple ester".
  • the (b) associative polymer used for the present invention comprises one or more (meth)acrylic acid (C1-C12) alkyl ester units, more preferably one or more (meth)acrylic acid ( C 1 -C 4 ) alkyl ester units.
  • the (b) associative polymer used for the present invention comprises one or more acrylic add units. According to a further embodiment, the (b) associative polymer used for the present invention comprises one or more methacrylic acid units. According to another embodiment, the (b) associative polymer used for the present invention comprises one or more acrylic acid units and one or more methacrylic acid units.
  • the (b) associative polymer may comprise another unit derived from another monomer that is different from (meth)acrylic acid.
  • such monomer may be esters of ethylenically unsaturated hydrophilic monomers, such as (meth)acrylic add or itaconic acid, and of polyoxyalkylenated fatty alcohols.
  • the fatty alcohol moiety of the ester monomer can be linear or branched, preferably linear, saturated or unsaturated, preferably saturated, (C12-C30) fatty alcohol, and in particular (C16-C26) fatty alcohol.
  • the polyoxyalkylene chain of the ester monomer preferentially consists of ethylene oxide units and/or propylene oxide units and even more particularly consists of ethylene oxide units.
  • the number of oxyalkylene units generally ranges from 3 to 100, preferably from 7 to 50 and more preferably from 12 to 30.
  • (b) associative polymer mention may be made, for example, of the product sold under the commercial name: NOVETEUX L-10 POLYMER® (INCI name: ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER) sold by LUBRIZOL, the product under the commercial name: Aculyn® 28 (INCI name: ACRYLATES/BEHENETH- 25 METHACRYLATE COPOLYMER) sold by DOW CHEMICAL, the product sold under the commercial name: Aculyn® 22 (INCI name: ACRYLATES/STEARETH-20 METHACRYLATE COPOLYMER) sold by DOW CHEMICAL, the product sold under the commercial name: Aculyn® 88 (INCI name: ACRYLATES/STEARETH-20 METHACRYLATE CROSSPOLYMER.) sold by DOW CHEMICAL, the product sold under the commercial name: STRUCTURE® 2001 (INCI name: ACRYLATES/STEARETH-20 TTACONATE CO
  • the (b) associative polymer that can be used for the present invention may also be chosen from anionic associative (co)polymers containing acrylic and/or methacrylic units.
  • the (meth)acrylic anionic associative (co)polymer that may be used for the present invention may be chosen from those comprising at least one hydrophilic unit of unsaturated olefinic carboxylic acid type, and at least one hydrophobic unit of a type such as a (C10-C30) alkyl ester of an unsaturated carboxylic acid.
  • these (meth)acrylic associative (co)polymers are preferably chosen from those in which the hydrophilic unit of unsaturated olefinic carboxylic acid type corresponds to the monomer of formula (I) below: in which R 1 denotes H or CH3, i.e. acrylic add or methacrylic add units, and in which the hydrophobic unit of (C10-C30) alkyl ester of unsaturated carboxylic add type corresponds to the monomer of formula (II) below: in which R 1 denotes H or CH3 (i.e. acrylate or methacrylate units), R 2 denoting a C10-C30 and preferably a C12-C22 alkyl radical.
  • (C10-C30)alkyl esters of unsaturated carboxylic adds according to formula (II) mention may more particularly be made of lauryl acrylate, stearyl acrylate, decyl acrylate, isodecyl acrylate and dodecyl acrylate, and foe corresponding methacrylates, lauryl methacrylate, stearyl methacrylate, decyl methacrylate, isodecyl methacrylate and dodecyl methacrylate.
  • the (meth)acrylic associative (co)polymer that may be used for the present invention may more particularly denote polymers formed from a mixture of monomers comprising:
  • R 3 denotes H or CH3
  • R 4 denoting an alkyl radical having from 12 to 22 carbon atoms
  • a crosslinking agent for instance those consisting of from 95% to 60% by weight of acrylic acid (hydrophilic unit), 4% to 40% by weight of C10-C30 alkyl acrylate (hydrophobic unit), and 0 to 6% by weight of crosslinking polymerizable monomer, or 98% to 96% by weight of acrylic acid (hydrophilic unit), 1% to 4% by weight of C10-C30 alkyl acrylate (hydrophobic unit) and 0.1% to 0,6% by weight of crosslinking polymerizable monomer, or
  • crosslinking agent can mean a monomer containing the group and at least one other polymerizable group, foe unsaturated bonds of foe monomer being unconjugated relative to each other.
  • crosslinking agent that may be used for foe present invention, mention may especially be made of polyallyl ethers especially such as poly allyl sucrose and polyallylpentaerythritol.
  • the ones particularly preferred for the present invention are the products sold by the company Goodrich under the trade names Pemulen TRI, Pemulen TR2, Carbopol 1382, and more preferably still Pemulen TRI, and foe product sold by foe company S.E.P.C. under the name Coatex SX.
  • foe (meth)acrylic associative (co)polymer mention may also be made of foe copolymer of methacrylic acid/mefoyl acrylate/dimethyl-meta-isopropenylbenzyl isocyanate of ethoxylated alcohol sold under the name Viscophobe DB 1000 by the company Amerchol.
  • Other (meth)acrylic associative (co)polymers that may be used for the present invention may also be sulfonic polymers comprising at least one (meth)acrylic monomer bearing sulfonic group(s), in free form or partially or totally neutralized form and comprising at least one hydrophobic portion.
  • the said hydrophobic portion present in the said sulfonic polymers that may be used for the present invention preferably comprises from 8 to 22 carbon atoms, more preferably from 8 to 18 carbon atoms and more particularly from 12 to 18 carbon atoms.
  • these sulfonic polymers that may be used for the present invention are partially or totally neutralized with a mineral base (sodium hydroxide, potassium hydroxide or aqueous ammonia) or an organic base such as mono-, di- or triethanolamine, an aminomethylpropanediol, N-methylglucamine, basic amino adds, for instance arginine and lysine, and mixtures of these compounds.
  • a mineral base sodium hydroxide, potassium hydroxide or aqueous ammonia
  • organic base such as mono-, di- or triethanolamine, an aminomethylpropanediol, N-methylglucamine, basic amino adds, for instance arginine and lysine, and mixtures of these compounds.
  • These said sulfonic polymers generally have a number-average molecular weight ranging from 1000 to 20000000 g/mol, preferably ranging from 20000 to 5000000 g/mol and even more preferably from 100000 to 1 500000 g/mol.
  • the sulfonic polymers that may be used for fee present invention may or may not be crosslinked.
  • Crosslinked polymers are preferably chosen.
  • the crosslinking agents may be selected from polyolefinically unsaturated compounds commonly used for the crosslinking of polymers obtained by free-radical polymerization. Mention may be made, for example, of divinylbenzene, diallyl ether, dipropylene glycol diallyl ether, polyglycol diallyl ethers, triethylene glycol divinyl ether, hydroquinone diallyl ether, ethylene glycol diacrylatedi(meth)acrylate or tetraethylene glycol diacrylatedi(meth)acrylate, trimethylolpropane triacrylate, methylenebisacrylamide, methylenebismethacrylamide, triallylamine, triallyl cyanurate, diallyl maleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallyl ether, allyl (meth)acrylate, allyl ethers of alcohols of the sugar series, or other allyl or
  • the degree of crosslinking will generally range from 0.01 mol% to 10 mol% and more particularly from 0.2 mol% to 2 mol% relative to the polymer.
  • the (meth)acrylic monomers bearing sulfonic group(s) of the sulfonic polymers that may be used for the present invention are chosen especially from (meth)acrylamido(C1-C22)alkylsulfonic acids and N-(C1-C22)alkyl(meth)acrylamido(C1-C22)alkylsulfonic acids, for instance undecylacrylamidomethanesulfonic add, and also partially or totally neutralized forms thereof.
  • the (meth)acrylic associative thickeners that may be used for the present invention may be chosen especially from random amphiphilic AMPS polymers modified by reaction with a C6-C22 n- monoalkylamine or C6-C22 di-n-alkylamine, such as those described in patent application WO 00/31154 (which forms an integral part of the content of the description).
  • These polymers may also contain other ethylenically unsaturated hydrophilic monomers selected, for example, from (meth)acrylic acids, ⁇ -substituted alkyl derivatives thereof or esters thereof obtained with monoalcohols or mono- or polyalkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maleic acid, or mixtures of these compounds.
  • copolymers may also contain one or more ethylenically unsaturated monomers not comprising a fatty chain, such as (meth)acrylic acids, ⁇ -substituted alkyl derivatives thereof or esters thereof obtained with monoalcohols or mono- or polyalkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maldc add, or mixtures of these compounds.
  • monomers not comprising a fatty chain such as (meth)acrylic acids, ⁇ -substituted alkyl derivatives thereof or esters thereof obtained with monoalcohols or mono- or polyalkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maldc add, or mixtures of these compounds.
  • the (b) associative polymer is not crosslinked.
  • the inorganic particle is different form the inorganic UV filter as explained above.
  • the particle size of the inorganic particle corresponds to a primary particle size.
  • the particle size here means an average or mean particle size, which may be a volume-average particle size, which can be determined by, for example, a laser diffraction particle size analyzer.
  • the particle size of the inorganic particle used for the present invention is not limited. However, it is preferable that the particle size of the inorganic particle be 50 pm or less, preferably 30 pm or less, more preferably 15 pm or less, even more preferably 10 pm or less, and particularly preferably from 2 to 5 pm.
  • the inorganic particle may or may not be porous, preferably non-porous.
  • the inorganic particle may be hollow or solid, preferably hollow.
  • - silicates such as talc, clays and kaolin
  • silica particles mention may be made of hollow spherical silica particles such as the products sold under the trade name BA4 from the company JGC Catalysts and Chemicals Ltd. in Japan.
  • the amount of the inorganic particle(s) in the composition according to the present invention may range from 1% to 20% by weight, preferably from 2% to 15% by weight, more preferably from 3% to 10% by weight, relative to the total weight of the composition.
  • composition according to the present invention may or may not comprise at least one lipophilic thickener. Two or more lipophilic thickeners can be combined.
  • the lipophilic thickener may be in the form of polymer or particles.
  • the lipophilic polymer thickener may be chosen from carboxyvinyl polymers such as the Carbopol products (carbomers) and the Pemulen products (acrylate/C10-C30-alkyl acrylate copolymer) or polymers having the INCI name 'Toly C10-30 Alkyl Acrylate", such as the Intelimer® products from Air Products, such as the product Intelimer® IPA 13-1, which is apolystearyl acrylate, or the product 30 Intelimer® IPA 13-6 which is a behenyl polymer: Particular mantion can be made of Acrylates/C10- 30 Alkyl Acrylate Crosspolymer which is sold under fee name of Carbopol® SC-200 Polymer from Lubrizol.
  • carboxyvinyl polymers such as the Carbopol products (carbomers) and the Pemulen products (acrylate/C10-C30-alkyl acrylate copolymer) or polymers having the INCI name 'Toly C10
  • the lipophilic thickener according to the present invention may be chosen from:
  • organomodified clays which are clays treated with compounds chosen especially from quaternary amines and tertiary amines.
  • Organomodified clays feat may be mentioned include organomodified bentonites, such as the product sold under the name Bentone 34 by the company Rheox, and organomodified hectorites such as the products sold under the names Bentone 27 and Bentone 38 by the company Rheox.
  • modified clays such as modified magnesium silicate (Bentone gel® VS38 from Rheox), modified hectorites such as hectorite modified with aC10 to C22 fatty acid ammonium chloride, for instance hectorite modified with distearyldimethylarnmonium chloride (disteardimonium hectorite) such as the product sold under the name Bentone 38VCG by the company Elementis or the product sold under the name Bentone 38 CE by the company Rheox, or the product sold under the name Bentone Gel® V55 V by the company Elementis, or the product sold under the name Bentone gel® ISD V by the company Elementis;
  • modified clays such as modified magnesium silicate (Bentone gel® VS38 from Rheox), modified hectorites such as hectorite modified with aC10 to C22 fatty acid ammonium chloride, for instance hectorite modified with distearyldimethylarnmonium chloride (disteardi
  • the amount of the lipophilic thickeners) in the composition may be from 0.025 to 5% by weight, preferably from 0.05 to 3% by weight, and more preferably from 0.075 to 1% by weight, relative to the total weight of the composition.
  • composition according to the present invention may or may not comprise at least one cosmetically acceptable organic solvent
  • a single type of cosmetically acceptable organic solvent may be used, but two or more different types of cosmetically acceptable organic solvent may be used in combination.
  • the cosmetically acceptable organic solvents may include alcohols: in particular monovalent alcohols, such as ethyl alcohol, isopropyl alcohol, benzyl alcohol, phenoxyethanol and phenylethyl alcohol; diols such as ethylene glycol, caprylyl glycol, propylene glycol, dipropylene glycol, propane diol, and butylene glycol; other polyols such as glycerol, sugar, and sugar alcohols; and ethers such as ethylene glycol monomethyl, monoethyl, and monobutyl ethers, propylene glycol monomethyl, monoethyl, and monobutyl ether, and butylene glycol monomethyl, monoethyl, and monobutyl ethers.
  • monovalent alcohols such as ethyl alcohol, isopropyl alcohol, benzyl alcohol, phenoxyethanol and phenylethyl alcohol
  • diols such as ethylene glycol, caprylyl glycol, prop
  • the organic water-soluble solvents may be present in an amount ranging from 1% by weight or more, preferably 5% by wdght or more, and more preferably 10% by wdght or more, relative to the total weight of the composition.
  • the organic water-soluble solvents may be present in an amount ranging from 30% by weight or less, preferably 25% by weight or less, and more preferably 20% by weight or less, relative to the total weight of the composition
  • the organic water-soluble solvents may be presort in an amount ranging from 1% to 30% by weight, preferably from 5% to 25% by weight, and more preferably from 10% to 20% by weight, relative to the total weight of the composition.
  • the pH ofthe composition according to the present invention may be adjusted to the desired value using at least one pH adjusting agent, such as an acidifying or a basifying agent, for example, which are commonly used in cosmetic products.
  • at least one pH adjusting agent such as an acidifying or a basifying agent, for example, which are commonly used in cosmetic products.
  • the pH of the composition according to the present invention may be from 3 to 9, preferably 3.5 to 8, and more preferably from 4 to 7.
  • acidifying agents mention may be made, by way of example, of mineral or organic adds such as hydrochloric acid, ortho-phosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, dtric add, and lactic acid, and sulfonic adds.
  • mineral or organic adds such as hydrochloric acid, ortho-phosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, dtric add, and lactic acid, and sulfonic adds.
  • basifying agents mention may be made, by way of example, of ammonium hydroxide, alkali metal carbonates, alkanolamines such as mono-, di- and triethanolamines and also their derivatives, alkali metal hydroxides such as sodium or potassium hydroxide and compounds of the formula below: wherein
  • W denotes an alkylene such as propylene optionally substituted by a hydroxyl or a C1-C4 alkyl radical
  • R c and Rd independently denote a hydrogen atom, an alkyl radical or a C1-C4 hydroxyalkyl radical, which may be exemplified by 1,3 -propanediamine and derivatives thereof.
  • the pH adjusting agent(s) may be used in an amount ranging from 0.001% to 10% by wdght, and preferably from 0.01% to 5% by wdght, relative to the total wdght of the composition.
  • composition according to the present invention may also comprise an effective amount of additional optional ingredients), known previously elsewhere in cosmetic compositions, for example, anionic, cationic or amphoteric surfactants; nonionic surfactants other than (c) polyglyceryl fatty add ester, such as polyhydroxy stearic add; anionic, cationic, amphoteric, or nonionic polymer; sequestering agents such as EDTA and trisodium ethylenediamine disuccinate; preserving agents; antioxidant, such as hydroxyacetophenone; vitamins ar provitamins, for instance, pantihenol or tocopherol; fragrances; plant extracts; and so on
  • the adjuvants may be present in fee composition of the present invention in an amount preferably ranging fiom 0.01% to 30% by weight, more preferably fiom 0.1% to 20% by weight, and even more preferably fiom 0.5% to 10% by weight, relative to the total weight of the composition.
  • the composition according to fee present invention comprises anionic, cationic or amphoteric surfactants in an amount of 5% by weight or less, preferably 3% by weight or less, more preferably 1% by weight or less, even more preferably 0.5% by weight or less, and in particular 0.1% by weight, relative to the total weight of the composition.
  • fee composition according to the present invention is free of any of anionic, cationic or amphoteric surfactants .
  • fee composition according to fee present invention comprises nonionic surfactants other than fee (c) polyglyceryl fatty acid ester in an amount of 1% by weight or less, preferably 0.8% by weight or less, more preferably 0.6% by weight or less, even more preferably 0.5 % by weight or less, and in particular 0.3 % by weight, relative to fee total weight of the composition.
  • fee amount of nonionic surfactants other than fee (c) polyglyceryl fetty add ester included in fee composition is less than the amount of fee (c) polyglyceryl fetty add ester included in fee composition.
  • composition according to the present invention can be prepared by mixing the essential ingredients) as explained above, and optional ingredients), if necessary, as explained above.
  • the method and means to mix fee above essential and optional ingredients are not limited. Any conventional method and means can be used to mix the above essential and optional ingredients to prepare fee composition according to fee present invention.
  • the conventional method and means may include a homogenizer, for example a turbine mixer.
  • the composition according to the present invention have a viscosity of 1 Pa s or more, more preferably 3 Pa s or more, and even more preferably 5 Pa s or more.
  • the viscosity can be measured with a B-type viscometer (for example, Rotor: No. 4, Rotation speed: 6 rpm, Measurement time: 1 minute) at 25°C.
  • fee composition according to the present invention have a viscosity at 25°C of 20 Pa-s or less, more preferably 15 Pa-s or less, and even more preferably 10 Pa-s or less.
  • composition according to the present invention have a viscosity at 25°C of ftom 1 Pa-s to 20 Pa-s, more preferably fiom 3 Pa-s to 15 Pa-s, and even more preferably ftom 5 Pa-s to 10 Pa-s.
  • composition according to the present invention may be present in any form.
  • the composition according to fee present invention can be in the form of a solution, an emulsion, a lotion, a milky lotion, a toner, a cream, a liquid gel, a paste, a serum.
  • the organic UV filter may be selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoylmethane compounds, such as butyl methoxydibenzoylmethane; bis- resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof; and/or the inorganic UV filter may be selected fiom metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide
  • Each of the O/W emulsion compositions according to Example 1 (Ex. 1) and Comparative Examples 1 to 4 (Comp. Ex. 1 to Comp. Ex. 4) was prepared by mixing tire ingredients shown in Table 1 with a homo-mixier as follows:
  • the numerical values in parentheses in titanium dioxide and silica indicate average particle size of the powder ingredients. Titanium dioxide was used as an inorganic UV filter. Silica was used as an inorganic particle. The mean (primary) particle diameter of Zea Mays (Com) Starch was around 10 ⁇ m. The numerical values for the amounts of the ingredients are all based on "% by weight” as active raw materials.
  • Example 1 Five professional panelists evaluated tire “light and fresh sensation” after application of the compositions according to Example 1 and Comparative Examples 1-4. Each panelist took each composition and applied it onto their feces to evaluate the light and fresh sensation after application, and scored it based on the following 3 criteria, and then an average score was calculated.
  • Example 1 Each of the compositions according to Example 1 and Comparative Examples 1-4 was filled into a glass bottle and was held under temperature at 45°C for 2 months. Each sample was then investigated for the degree of phase separation and evaluated in accordance with the following criteria.
  • composition in the form of an O/W emulsion according to the present invention (Example 1), which comprises a combination of the ingredients (a) to (d), was able to provide excellent cosmetic effects in terms of light and fresh sensation and non-oily/greasy feeling aspects as well as stability.
  • the composition according to the present invention can provide, in particular, an excellent feeling to the touch and stability for a long time period even under temperature changes.

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Abstract

The present invention relates to a composition comprising: (a) at least one UV filter; (b) at least one associative polymer comprising one or more acrylic and/or methacrylic units; (c) at least one polyglyceryl fatty acid ester; and (d) at least one organic filler. The composition according to the present invention is stable and can provide a light and fresh sensation, as well as no or a reduced oily/greasy feeling for keratinous substances.

Description

DESCRIPTION
TITLE OF INVENTION
STABLE SUN CARE COMPOSITION
TECHNICAL FIELD
The present invention relates to a composition, preferably a cosmetic composition, and more preferably a stable sun care cosmetic composition having improved cosmetic sensations.
BACKGROUND ART
Imparting a comfortable texture to skin is one of the key features of cosmetic products, in particular sun care cosmetic products.
It should be noted that a composition which is unstable and easily causes a collapse of the structure of the composition often provides a comfortable feel on use. This means that it is difficult to provide both a comfortable feel on use and good stability at the same time.
So far, several technologies regarding gel-like compositions or emulsion compositions which impart an improved texture and stability have been reported.
For example, IP Hl 1-246379A discloses a sunscreen cosmetic including ingredients (A) ethanol, (B) starch powder and/or silicic add anhydride having an average primary particle diameter of 1 pm or larger, and (C) a UV light-scattering agent and/or a UV light-absorbing agent
Also, WO 2007/144670 discloses a skincare composition in the form of an emulsion comprising: a) an organic sunscreen component comprising at least one sunscreen selected from the group consisting of bis-ethylhexyloxyphenol methoxyphenyl triazine and methylene bis-benzotriazolyl tetramethylbutylphenol; b) a moisturising system comprising starch or a derivative thereof and a polymeric quaternary compound salt having humectant properties; and c) a carrier comprising an oil phase, an aqueous phase and an emulsifying system, said emulsifying system comprising at least one emulsifier selected from an anionic or non-ionic emulsifier.
Also, WO 2017/103083 discloses a composition, especially for caring for and/or making up keratin materials, comprising at least one aqueous phase containing at least:
- a hydrophilic gelling agent; and
- a dispersion of at least one anhydrous composite material formed from at least:
- 3% to 15% by wdght of at least one Hpophilic gelling agent, relative to the total weight of the material;
- 10% to 50% by weight of fillers, relative to the total wdght of the material; and
- 40% to 85% by weight of at least one fatty phase, relative to the total wdght of the material.
However, there is still a demand for a composition which can provide keratinous substances with improved texture, such as light/fresh sensation and reduced greasy feeling, as well as Which has a good stability. DISCLOSURE OF INVENTION
An obj ective of fee present invention is to provide a stable composition which can provide improved cosmetic sensations, such as no or a reduced oily/greasy feeling, and improved light/fresh sensation.
The above objective of fee present invention can be achieved by a composition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising:
(a) at least one UV filter,
(b) at least one associative polymer corpprising one or more acrylic and/or methacrylic units;
(c) at least one polyglyceryl fatty acid ester, and
(d) at least one organic filler.
The (a) UV filter may comprise at least one organic UV filter and at least one inorganic UV filter
The organic UV filter may comprise a combination of at least one organic UV-A filter, at least one organic UV-B filter, and at least one organic UV-A and UV-B filter.
The organic UV filter may be selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoylmethane canpounds, such as butyl methoxydibenzoylmethane; bis-resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof
The inorganic UV filter may be selected from metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof.
The amount of the organic UV filters) in the composition may range from 2.5% to 25% by weight, preferably from 5% to 20% by weight, and more preferably from 7.5% to 15% by weight, relative to the total weight of fee composition.
The amount of the inorganic UV filters) in the composition may range from 0.5% to 15% by weight, preferably from 1% to 10% by weight, and more preferably from 1.5% to 5% by weight, relative to the total weight of the corpposition.
The amount of the (a) UV filters) in the composition may range from 3% to 30% by weight, preferably from 5% to 25% by weight, and more preferably from 10% to 20% by weight, relative to the total weight of the composition.
The (b) associative polymer may comprise one or more (mefejacrylic acid (C1-C12) alkyl ester units.
The (b) associative polymer may comprise one or more units derived from polyoxyalkylenated fatty alcohols.
The amount of the (b) associative polymer(s) in fee composition may range from 0.1% to 5% by weight, preferably from 0.3% to 3% by weight, and more preferably from 0.5% to 1% by weight relative to fee total weight of the composition.
The (c) polyglyceryl fatty acid ester may have a polyglyceryl moiety derived from 2 to 10 glycerins, preferably 2 to 8 glycerins, and more preferably from 2 to 6 glycerins.
The (c) polyglyceryl fetty acid ester may comprise two or more types of the polyglyceryl fetty add esters.
The amount of the (c) polyglyceryl fatty acid ester(s) in the composition may range from 0.1% to 3% by weight, preferably from 0.3% to 2% by weight, and more preferably from 0.5% to 1% by weight relative to the total weight of the composition.
The (d) organic filler may be selected from polysaccharides, preferably from starches, and in particular from com (zea mays) starches.
The amount of the (d) organic fillers) in the composition may range from 0.1% to 10% by wdght, preferably from 1% to 7% by weight, and more preferably from 2% to 5% by weight relative to the total weight of the composition.
The composition may be in the form of emulsion, preferably O/W emulsion.
The present invention also relates to a cosmetic process for treating a keratin substance, comprising the step of applying the composition according to the present invention to the keratin substance.
BEST MODE FOR CARRYING OUT THE INVENTION
After diligent research, the inventors have discovered the combination of the ingredients (b) at least one associative polymer comprising one or more acrylic and/or methacrylic units, (c) at least one polyglyceryl fatty acid ester, and (d) at least one organic filler can provide compositions comprising (a) at least one UV filter with improved stability as well as improved cosmetic effects such as no or a reduced oily/greasy feeling and light/fresh sensation, thus completed the invention.
Thus, one aspect of the present invention is a composition comprising:
(a) at least one UV filter;
(b) at least one associative polymer comprising one or more acrylic and/or methacrylic units;
(c) at least one polyglyceryl fetty acid ester; and
(d) at least one organic filler.
The composition according to the present invention is stable and can provide no or a reduced oily/greasy feeling, and improved light and/or fresh sensation during application.
The composition according to the present invention is stable just after the preparation of the composition and for a long time after the preparation of the composition thanks for an increased viscosity.
Thus, the composition according to the present invention can provide an excellent feeling to touch, in particular on feeling of the skin during and after application of the composition. Therefore, the composition according to the present invention is very suitable for cosmetic topical compositions for keratinous substances, such as skin.
Hereinafter; the composition according to the present invention and the like will be explained in a more detailed manner. [Composition]
The composition according to the present invention can be a cosmetic composition, preferably a cosmetic composition for keratinous substance, such as skin, and more preferably a sun care composition for keratinous substance, such as skin. Thus, the composition according to the present invention may be intended for use as a cosmetic topical composition.
The keratinous substance here means a material containing keratin as a main constituent element, and examples thereof include the skin, scalp, lips, and the like. Preferably, the composition of the present invention is used for skin.
The composition according to the present invention includes (a) at least one UV filler, (b) at least one associative polymer comprising one or more acrylic and/or methacrylic units; (c) at least one polyglyceryl fatty add ester, and (d) at least one organic filler.
The ingredients in the composition will be described in a detailed manner below.
(UV Filter)
The composition according to the present invention comprises (a) at least one UV filter. Two or more UV filters may be used in combination. Thus, a single type ofUV filter or a combination of different types ofUV filters may be used.
The term “UV” here comprises the UV-B region (260-320 nm in wavelength), the UV-A region (320- 400 nm in wavelength), and the high energy visible light region (400-450 nm in wavelength). Therefore, a UV filter means any material which has filtering effects in the wavelength of UV rays, in particular the UV-A, UV-B, and high energy visible light regions.
The (a) UV filter is selected from organic UV filters, inorganic UV filters, and combination thereof. Thus, the (a) UV filter comprises at least one organic UV filter, at least one inorganic UV filters, or combination thereof.
- Organic UV Filter
The organic UV filter of the present invention is lipophilic or hydrophilic, and preferably lipophilic.
The term ‘lipophilic” here means materials which are soluble in oils at a concentration of at least 1% by weight relative to the total weight of the oils at room temperature (25°C) and atmosphere pressure (105 Pa). The term "hydrophilic" here means materials which are soluble in water at a concentration of 1% by weight or more relative to the total weight of the water at room temperature (25°C) and atmospheric pressure (105 Pa).
The organic UV filter may be solid or liquid. The terms “solid” and “liquid” mean solid and liquid, at room temperature (25°C) and atmosphere pressure (10s Pa).
The organic UV filters) used for the present invention may be active in the UV-A and/or UV-B region, preferably in each of the organic UV-A and UV-B regions alone or in combination.
The organic UV-A filters used in the present invention may include, but are not limited to, aminobenzophenone compounds, dibenzoylmethane compounds, anthranilic arid compounds, and 4,4-diarylbutadiene compounds.
As the aminobenzophenone compounds, mention can be made of n-hexyl 2-(4-diethlamino-2- hydroxybenzoyl)benzoate, the alternative name of which is diethylamino hydroxybenzoyl hexyl benzoate (DHHB), sold under the trade name “Uvinul A+” from BASF.
As the dibenzoylmethane compounds, mention can be made of 4-isopropyldibenzoylmethane, sold under the name of “Eusolex 8020” from Merck, l-(4-methoxy-l-benzofuran-5-yl)-3-phenylpropane- 13 -dione, sold under the name of ‘Pongamol” from Quest, l-(4-(tert-butyl)phenyl)-3-(2- hydroxyphenyl)propane- 1,3 -dione, and butyl methoxydibenzoylmethane, sold under the trade name "Parsol 1789" from Hoffinann-La Roche.
As the anthranilic arid compounds, mention can be made of menthyl anthranilate marketed under the name "NEO HELIPAN MA" by Symrise.
As the 4,4-diarylbutadiene compounds, mention can be made of 1,1-dicarboxy (2,2'-dimethylpropyl)- 4,4-diphenylbutadiene and diphenyl butadiene malonates and malononitriles.
The organic UV-B filters used in the present invention may include, but are not limited to, triazine compounds, para-aminobenzoic arid compounds, salicylic compounds, cinnamate compounds, β,β- diphenylacrylate compounds, benzylidenecamphor compounds, phenylbenzimidazole compounds, imidazoline compounds, benzalmalonate compounds, and merocyanine compounds.
As the triazine compounds, mention can be made of ethylhexyl triazone, marketed under the name “UVINUL T-150” by BASF, diethylhexyl butamido triazone, marketed under the name “UVASORB HEB” by SIGMA 2V, 2,4,6-tris(dineopentyl 4’-aminobenzalmalonate)-s-triazine, 2,4,6-tris(diisobutyl 4’-aminobenzahnalonate)-s-triazine, 2,4-bis(dineopentyl 4’-aminobenzalmalonate)-6-(n-butyl 4’- aminobenzoaie)-s-triazine, and 2,4-bis(n-butyl 4’-aminobenzoate)-6-(aminqpropyitrisiloxane)-s- triazine.
As the pararaminobenzoic acid derivatives, mention can be made of para-aminobenzoates (PAB A), for example, ethyl PABA (para-aminobenzoate), ethyl dihydroxypropyl PABA, and ethylhexyl dimethyl PABA, marketed under the name “ESCALOL 5972 from ISP.
As the salicylic compounds, mention can be made of homosalate, marketed under the name “Eusolex HMS” by RonaZEM industries, and ethylhexyl salicylate, marketed undo: the name “NEO HELIOPAN OS” by Symrise.
As the cinnamate compounds, mention can be made of ethylhexyl methoxycinnamate, marketed under the name ‘TARSOL CX” by DSM NUTRITIONAL PRODUCTS, isopropyl ethoxy cinnamate, isoamyl methoxy cinnamate, marketed under the name “NEO HELIOPAN E 1000” by Symrise, diisopropyl methylcinnamate, cinoxate, and glyceryl ethylhexanoate dimethoxycinnamate.
As the β,β-diphenylacrylate compounds, mention can be made of octocrylene, marketed under the name “UVINUL N539” by BASF, and etocrylene, marketed under the name ‘UVINUL N35” by BASF.
As the benzylidenecamphor compounds, mention can be made of 3-benzylidene camphor, marketed under the name “MEXORYL SD” from CHIMEX, methylbenzylidene camphor, marketed under the name “EUSOLEX 6300” by MERCK, polyacrylamidomethyl benzylidene Camphor, marketed under the name “MEXORYL SW” by CHIMEX, and terephihalylidene dicamphor sulfonic acid, marketed undo- the name “Mexoryl SX” by Chimex.
As the phenylbenzimidazole
Figure imgf000007_0001
unds, mention can be made of phenythenzimidazole sulfonic add, marketed under the name “Eusolex 232” by Merck, and disodium phenyl dibenzimidazole tetrasulfonate, marketed under the name “Neo Heliopan AP” by Haarmann and Reimer.
As the imidazoline compounds, mention can be made of ethylhexyl dimethoxybenzylidene dioxoimidazoline propionate.
As the benzalmalonate compounds, mention can be made of polyorganosiloxane containing a benzalmalonate moiety, for example, Polysilicone-15, marketed undo- the name ‘Tarsol SLX” by DSM NUTRITIONAL PRODUCTS, and di-neopentyl 4'-methoxybenzalmalonate.
The organic UV filters of the present inventionmay comprise lipophilic organic UV-Aand UV-B filters, which cover UV-Aand UV-B regions. The following are non-limiting examples of the lipophilic organic UV-A and UV-B filters:
- benzophenone compounds, sudi as benzophenone- 1 marketed under the name “UVINUL 400” by BASF, benzophenone-2 marketed under the name “UVINUL 500” by BASF, benzophenone-3 or oxybenzone marketed under the name “UVINUL M40” by BASF, benzophenone-6 marketed under the name “Helisorb 11” by Norquay, benzophenone-8 marketed under the name “Spectra-Sorb UV- 24” by American Cyanamid, benzophenone-10,benzophenone-ll, and benzophenone- 12;
- benzotriazole compounds sudi as drometrizole trisiloxane marketed under the name “Silatrizole” by Rhodia Chimie, bumetrizole marketed under the name “TINOGUARTD AS” by CIBA-GEIGY ,and , phenylbenzotriazole derivatives: 2-(2H-benzotriazole-2-yl)-6-dodecyl-4-methylpheno, branched and linear;
- bis-resorcinyl triazine compounds, sudi as bis-ethylhexyloxyphenol methoxyphenyl triazine marketed under the name “TINOSORB S” by CIBA-GEIGY; and
- benzoxazole compounds, such as 2, 4-bis[5-(l -dimethylpropyl) benzoxazol-2-yl(4-phenyl)imino]-6- (2-ethylhexyl)imino-13,5-triazine marketed under the name “Uvasorb K2A” by Sigma 3V.
Preferably, the organic UV filter may be selected firm aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, sudi as ethylhexyl triazone; dibenzoylmethane compounds, sudi as butyl methoxydibenzoylmethane; bis-resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof
In one preferred embodiment of the present invention, the organic UV filter of the present invention comprises a combination of at least one organic UV- A filter and at least one organic UV-B filter. hi another preferred embodiment of the present invention, the organic UV filter of the present invention comprises a combination of at least one organic UV-A filler, at least one organic UV-B filter, and at least one organic UV-A and UV-B filler.
When the (a) UV filler comprises at least one organic UV filter; the amount of the organic UV filters) in the composition according to the present invention may be 2.5% by weight or more, preferably 5% by weight or mere, and more preferably 7.5% by weight or more, relative to the total weight of the composition. When the (a) UV filter comprises at least one organic UV filter, the amount of the organic UV filters) in the composition according to the present invention may be 25% by weight or less, preferably 20% by weight or less, and more preferably 15% by weight or less, relative to the total weight of the composition.
When the (a) UV filter comprises at least one organic UV filter, the amount of the organic UV filters) in the composition according to the present invention may be fiom 2.5% to 25% by weight, preferably from 5% to 20% by weight, and more preferably fiom 7.5% to 15% by weight, relative to the total weight of the composition.
- Inorganic UV Filter
The inorganic UV filler used for the present invention is water-insoluble in solvents such as water and ethanol commonly used in cosmetics, but may be hydrophilic and/or lipophilic.
The inorganic UV filter used for the present invention may be active in the UV- A and/or UV-B region.
It is preferable that the inorganic UV filler be in the form of a fine particle such that the mean (primary) particle diameter thereof ranges from 1 nm to 200 nm, preferably 5 nm to 150 nm, and more preferably 10 nm to 100 nm. The mean (primary) particle size or mean (primary) particle diameter here is an arithmetic mean diameter. Preferably, the (b) inorganic UV filters may have mean size of the primary particles ranging fiom 5 nm to 80 nm, preferably from 10 nm to 50 nm.
The term “mean primary particle size” used herein can represent a volume-average size mean diameter which is given by the statistical particle size distribution to half of the population, referred to as Dso. For example, the volume-average size mean diameter can be measured by a laser diffraction particle size distribution analyzer, such as Mastersizer 2000 by Malvern Corp.
The inorganic UV filter can be selected fiom the group consisting of silicon carbide, metal oxides which may or may not be coated, and mixtures thereof.
Preferably, the inorganic UV filter is formed of metal oxides, such as, titanium dioxide (amorphous or crystalline in the rutile and/or anatase form), iron oxide, zinc oxide, zirconium oxide or cerium oxide, which are all UV photoprotective agents that are well known per se. Preferably, the inorganic UV filters may be selected from titanium dioxide (TiO2), zinc oxide, and more preferably titanium dioxide.
The inorganic UV filter may or may not be coated. The inorganic UV filter may have at least one coating. The coating may comprise at least one compound selected fiom the group consisting of alumina, silica, aluminum hydroxide, silicones, silanes, fatty adds or salts thereof (such as sodium, potassium, zinc, iron, or aluminum salts), fatty alcohols, lecithin, amino adds, polysaccharides, proteins, alkanolamines, waxes such as beeswax, (meth)acrylic polymers, organic UV filters, and (per)fluoro compounds.
It is preferable for the coating to include at least one organic UV filter. As the organic UV filter in the coating, a dibenzoylmethane derivative such as butyl methoxydibenzoylmethane (Avobenzone) and 2,2'-Methylenebis[6-(2H-Benzotriazol-2-yl)-4-(1,133-Tetramethyl-Butyl)Phenol] (Methylene Bis- Benzotriazolyl Tetramethylbutylphenol) marketed as “TINOSORB M” by BASF may be preferable.
In a known manner, the silicones in the coating(s) may be organosilicon polymers or oligomers comprising a linear or cyclic and branched or cross-linked structure, of variable molecular weight, obtained by polymerization and/or polycondensation of suitable functional silanes and essentially composed of repeated main units in which the silicon atoms are connected to one another via oxygen atoms (siloxane bond), optionally su
Figure imgf000009_0001
tituted hydrocarbon radicals being connected directly to said silicon atoms via a carbon atom.
The term "silicones" also encompasses silanes necessary for their preparation, in particular alkylsilanes.
The silicones used for the coating(s) can preferably be selected from the group consisting of alkylsilanes, polydialkylsiloxanes, and polyalkylhydrosiloxanes. More preferably still, the silicones are selected from the group consisting of octyltrimethylsilanes, polydimethylsiloxanes, and polymethylhydrosiloxanes.
Of course, the inorganic UV filters made of metal oxides may, before their treatment with silicones, have been treated with other surfacing agents, in particular, with cerium oxide, alumina, silica, aluminum compounds, silicon compounds, ar mixtures thereof.
The coated inorganic UV filter may have been prepared by subjecting the inorganic UV filter to one or more surface treatments of a chemical, electronic, mechanochemical, and/or mechanical nature with any of the compounds as described above, as well as polyethylenes, metal alkoxides (titanium or aluminum alkoxides), metal oxides, sodium hexametaphosphate, and those shown, for example, in Cosmetics & Toiletries, February 1990, Vol. 105, pp. 53-64.
The coated inorganic UV filters may be titanium oxides coated with: silica, such as the product "Sunveil" from Ikeda; silica and iron oxide, such as the product "Sunveil F" from Ikeda; silica and alumina, such as the products "Microtitanium Dioxide MT 500 SA" from Tayca, "Tioveil" from Tioxide, and "Mhasun TiW 60" from Rhodia; alumina, such as the products "Tipaque TTO-55 (B)" and "Tipaque TTO-55 (A)" from Ishihara, and "UVT 14/4" from Kemira; alumina and aluminum stearate, such as the product "Microtitanium Dioxide MT 100 T, MT 100 TX, MT 100 Z or MT-01" from Tayca, the products "Solaveil CT-10 W" and "Solaveil CT 100" from Uniqema, and the product "Eusolex T-AVO" from Merck; alumina and aluminum laurate, such as the product "Microtitanium Dioxide MT 100 S" from Tayca; iron oxide and iron stearate, such as the product "Microtitanium Dioxide MT 100 F' from Tayca; zinc oxide and zinc stearate, such as the product "BR351 " from Tayca; silica and alumina and treated with a silicone, such as the products "Microtitanium Dioxide MT 600 SAS", "Microtitanium Dioxide MT 500 SAS", and "Microtitanium Dioxide MT 100 SAS" from Tayca; silica, alumina, and aluminum stearate and treated with a silicone, such as the product "STT-30-DS" from Titan Kogyo; silica and treated with a silicone, such as the product "UV-Titan X 195" from Kemira; alumina and treated with a silicone, such as the products 'Tipaque TTO-55 (S)" from Ishihara or "UV Titan M 262" from Kemira; triethanolamine, such as the product "STT-65-S" from Titan Kogyo; stearic acid, such as the product "Tipaque TTO-55 (C)" from Ishihara; or sodium hexametaphosphate, such as the product "Microtitanium Dioxide MT 150 W" from Tayca.
Other titanium oxide pigments treated with a silicone are preferablyTiO2 treated with octyltrimethylsilane and fix which the mean sire of the individual particles is from 25 and 40 nm, such as that marketed under the trademark "T 805" by Degussa Silices, TiO2 treated with a polydimethylsiloxane and for which the mean size of the individual particles is 21 nm, such as that marketed under the trademark '70250 Cardie UFTiO2Si3" by Cardre, and anatase/rutileTiO2 treated with a polydimethylhydrosiloxane and for which the mean size of the individual particles is 25 nm, such as that marketed under the trademark "Microtitanium Dioxide USP Grade Hydrophobic" by Color Techniques.
Preferably, the following coated TiO2 can be used as the coated inorganic UV filter Stearic acid (and) Aluminum Hydroxide (and)TiO2, such as the product “MT- 100 TV” ftom Tayca, with a mean primary particle diameter of 15 nm;
Dimethicone (and) Stearic Acid (and) Aluminum Hydroxide (and) TiO2, such as the product “SA- TTO-S4” from Miyoshi Kasei, with a mean primary particle diameter of 15 nm;
Silica (and)TiO2, such as the product “MT-100 WP” ftom Tayca, with a mean primary particle diameter of 15 nm;
Dimethicone (and) Silica (and) Aluminum Hydroxide (and)TiO2, such as the product “MT-Y02” and “MT-Y-110 M3S” ftom Tayca, with a mean primary particle diameter of 10 nm;
Dimethicone (and) Aluminum Hydroxide (and) TiO2, such as the product “SA-TTO-S3” ftom Miyoshi Kasei, with a mean primary particle diameter of 15 nm;
Dimethicone (and) Alumina (and) TiO2, such as the product “UV TITAN Ml 70” from Sachtleben, with a mean primary particle diameter of 15 nm; and
Silica (and) Aluminum Hydroxide (and) Alginic Acid (and)TiO2, such as the product “MT-100 AQ” ftom Tayca, with a mean primary particle diameter of 15 nm.
In terms of UV filtering ability, TiO2 coated with at least one organic UV filter is more preferable. For example, Avobenzone (and) Stearic Acid (and) Aluminum Hydroxide (and)TiO2, such as the product “HXMT-100ZA” ftom Tayca, with a mean primary particle diameter of 15 nm, can be used.
The uncoated titanium oxide pigments are, for example, marketed by Tayca under the trademarks "Microtitanium Dioxide MT500B" or ''Microtitanium Dioxide MT600B", by Degussa under the trademark "P 25", by Wacker under the trademark "Oxyde de titane transparent PW", by Miyoshi Kasei under the trademark "UFTR", by Tomen under the trademark "ITS", and by Tioxide under the trademark "TIoveil AQ".
The uncoated zinc oxide pigments are, for example: those marketed under the trademark "Z-cote" by Sunsmart; those marketed under the trademark 'Nanox" by Elementis; and those marketed under the trademark 'Nanogard WCD 2025" by Nanophase Technologies.
The coated zinc oxide pigments are, for example: those marketed under the trademark "Oxide Zinc CS-5" by Toshiba (ZnO coated with polymethylhydrosiloxane); those mariceted under the trademark 'Nanogard Zinc Oxide FN" by Nanophase Technologies (as a 40% dispersion in Finsolv TN, C12-C15 alkyl benzoate); those marketed under the trademark "Daitopersion Zn-30" and "Daitopersion Zn-50" by Daito (dispersions in oxyethylenated polydimethylsiloxane/cyclopolymethylsiloxane comprising 30% or 50% of zinc nano-oxides coated with silica and polymethylhydrosiloxane); those marketed under the trademark "NFD Ultrafine ZnO" by Daikin (ZnO coated with phosphate of perfluoroalkyl and a copolymer based on perfluoroalkylethyl as a dispersion in cyclopentasiloxane); those marketed under the trademark "SPD-Z1 " by Shin-Etsu (ZnO coated with a silicone-grafted acrylic polymer dispersed in cyclodimethylsiloxane); those marketed under the trademark "Escalol Z100" by ISP (aluminartreated ZnO dispersed in an ethylhexyl methoxycinnamate/PVP-hexadecene copolymer/methicone mixture); those marketed under the trademark "Fuji ZnO-SMS-10" byFuji Pigment (ZnO coated with silica and polymethylsilsesquioxane); and those marketed under the trademark 'Nanox Gel TN" by Elementis (ZnO disposed at 55% in C12-C15 alkyl benzoate with hydroxystearic acid polycondensate).
The uncoated cerium oxide pigments are marketed, for example, under the trademark "Colloidal Cerium Oxide" by Rhone-Poulenc.
The uncoated iron oxide pigments are, for example, marketed by Arnaud under the trademarks "Nanogard WCD 2002 (FE 45B)", 'Nanogard Iron FE 45 BL AQ", 'Nanogard FE 45R AQ", and 'Nanogard WCD 2006 (FE 45R)", or by Mitsubishi under the trademark "TY-220".
The coated iron oxide pigments are, for example, marketed by Arnaud under the trademarks 'Nanogard WCD 2008 (FE 45B FN)", 'Nanogard WCD 2009 (FE 45B 556)", 'Nanogard FE 45 BL 345", and "Nanogard FE 45 BL", or by BASF undo: the trademark "Oxyde de fer transparent".
Mention may also be made of mixtures of metal oxides, in particular, of titanium dioxide and of cerium dioxide, including a mixture of equal weights of titanium dioxide coated with silica and of cerium dioxide coated with silica marketed by Ikeda under the trademark "Sunveil A", and also a mixture of titanium dioxide and of zinc dioxide coated with alumina, with silica and with silicone, such as the product "M 261 " marketed by Kemira, or coated with alumina, with silica, and with glycerol, such as the product "M 211 " marketed by Kemura.
Coated inorganic UV filters are preferable, because the UV filtering effects of the inorganic UV filters can be enhanced, hi addition, the coating(s) may help uniformly or homogeneously disperse the UV filters in the composition according to the present invention.
In one embodiment of the present invention, the (a) UV filter comprises at least one organic UV filter and at least one inorganic UV filter.
When the (a) UV filter comprises at least one inorganic UV filter, the amount of the inorganic UV filters) in the composition according to the present invention may be 0.5% by weight or more, preferably 1% by weight or more, and more preferably 1.5% by weight or more, relative to the total weight of the composition
When the (a) UV filter comprises at least one inorganic UV filter, the amount of the inorganic UV fitters) in the composition according to the present invention may be 15% by weight or less, preferably 10% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.
When the (a) UV filter comprises at least one inorganic UV filter; the amount of the inorganic UV filters) in the composition according to tire present invention may be from 0.5% to 15% by weight, preferably from 1% to 10% by weight, and more preferably from 1.5% to 5% by weight, relative to the total weight of the composition.
The amount of the (a) UV filters) in the composition according to the present invention may be 3% by weight or more, preferably 5% by weight or more, and more preferably 10% by weight or more, relative to the total weight of tire composition. On the other hand, the amount of the (a) UV filters) in the composition according to the present invention may be 30% by weight or less, preferably 25% by weight or less, and more preferably 20% by weight or less, relative to the total weight of the composition.
The amount of the (a) UV filters) in the composition according to the present invention may range from 3% to 30% by weight, preferably from 5% to 25% by weight, and more preferably from 10% to 20% by weight, relative to the total weight of the composition.
(Associative Polymer)
The composition according to the present invention comprises (b) at least one associative polymer comprising one or more acrylic and/or methacrylic units. Two or more associative polymers may be used in combination. Thus, a single type of associative polymer or a combination of different types of associative polymers may be used.
The (b) associative polymer can function as a thickener.
For the purpose of the present invention, the term "associative polymer" refers to homopolymers or copolymers that are capable, in an aqueous medium, of reversibly combining with each other or with other molecules.
The (b) associative polymer used for the present invention is preferably an associative copolymer of one or more acrylic and/or methacrylic units and of other units.
The (b) associative polymer more particularly comprises at least one hydrophilic part and at least one hydrophobic part. For the purpose of the present invention, the term "hydrophobic group" means a radical or polymer with a saturated or unsaturated, linear or branched hydrocarbon-based chain, comprising at least 10 carbon atoms, preferably from 10 to 30 carbon atoms, in particular from 12 to 30 carbon atoms and more preferentially from 16 to 30 carbon atoms.
For the purpose of the present invention, the (b) associative polymer comprising one or more acrylic and/or methacrylic units means that the polymer comprises at least one acrylic acid unit or at least one methacrylic acid unit or a mixture thereof. Thus, the (b) associative polymer can be hydrophilic and/or water-soluble, and preferably functions as a hydrophilic thickener. hi one embodiment of the present invention, the (b) associative polymer is soluble in water at a concentration of 1% by weight or more, preferably 5% by weight or more, more preferably 10% by weight or more, and even more preferably 20% by weight or more, relative to the total weight of the water at room temperature (25°C) and
Figure imgf000012_0001
eric pressure (105 Pa).
The (b) associative polymer may comprise further units such as units formed by an alkyl ester of acrylic acid or methacrylic acid, preferably of acrylic acid, comprising less than 6 carbon atoms: for example, a C1-C4 alkylacrylate, for example, chosen from methyl acrylate, ethyl acrylate and butyl acrylate, called hereinafter "simple ester".
In one preferred embodiment of the present invention, the (b) associative polymer used for the present invention comprises one or more (meth)acrylic acid (C1-C12) alkyl ester units, more preferably one or more (meth)acrylic acid ( C1-C4) alkyl ester units.
According to a particular embodiment, the (b) associative polymer used for the present invention comprises one or more acrylic add units. According to a further embodiment, the (b) associative polymer used for the present invention comprises one or more methacrylic acid units. According to another embodiment, the (b) associative polymer used for the present invention comprises one or more acrylic acid units and one or more methacrylic acid units.
In a particular embodiment, the (b) associative polymer may comprise another unit derived from another monomer that is different from (meth)acrylic acid. For example, such monomer may be esters of ethylenically unsaturated hydrophilic monomers, such as (meth)acrylic add or itaconic acid, and of polyoxyalkylenated fatty alcohols. Preferably, the fatty alcohol moiety of the ester monomer can be linear or branched, preferably linear, saturated or unsaturated, preferably saturated, (C12-C30) fatty alcohol, and in particular (C16-C26) fatty alcohol. The polyoxyalkylene chain of the ester monomer preferentially consists of ethylene oxide units and/or propylene oxide units and even more particularly consists of ethylene oxide units. The number of oxyalkylene units generally ranges from 3 to 100, preferably from 7 to 50 and more preferably from 12 to 30.
As examples of the (b) associative polymer, mention may be made, for example, of the product sold under the commercial name: NOVETEUX L-10 POLYMER® (INCI name: ACRYLATES/BEHENETH-25 METHACRYLATE COPOLYMER) sold by LUBRIZOL, the product under the commercial name: Aculyn® 28 (INCI name: ACRYLATES/BEHENETH- 25 METHACRYLATE COPOLYMER) sold by DOW CHEMICAL, the product sold under the commercial name: Aculyn® 22 (INCI name: ACRYLATES/STEARETH-20 METHACRYLATE COPOLYMER) sold by DOW CHEMICAL, the product sold under the commercial name: Aculyn® 88 (INCI name: ACRYLATES/STEARETH-20 METHACRYLATE CROSSPOLYMER.) sold by DOW CHEMICAL, the product sold under the commercial name: STRUCTURE® 2001 (INCI name: ACRYLATES/STEARETH-20 TTACONATE COPOLYMER) sold by AKZO NOBEL, and the product sold under the commercial name: STRUCTURE® 3001 (INCI name: ACRYLATES/CETETH-20 TTACONATE COPOLYMER ) sold by AKZO NOBEL.
The (b) associative polymer that can be used for the present invention may also be chosen from anionic associative (co)polymers containing acrylic and/or methacrylic units.
The (meth)acrylic anionic associative (co)polymer that may be used for the present invention may be chosen from those comprising at least one hydrophilic unit of unsaturated olefinic carboxylic acid type, and at least one hydrophobic unit of a type such as a (C10-C30) alkyl ester of an unsaturated carboxylic acid.
More particularly, these (meth)acrylic associative (co)polymers are preferably chosen from those in which the hydrophilic unit of unsaturated olefinic carboxylic acid type corresponds to the monomer of formula (I) below:
Figure imgf000013_0001
in which R1 denotes H or CH3, i.e. acrylic add or methacrylic add units, and in which the hydrophobic unit of (C10-C30) alkyl ester of unsaturated carboxylic add type corresponds to the monomer of formula (II) below:
Figure imgf000014_0001
in which R1 denotes H or CH3 (i.e. acrylate or methacrylate units), R2 denoting a C10-C30 and preferably a C12-C22 alkyl radical.
As (C10-C30)alkyl esters of unsaturated carboxylic adds according to formula (II), mention may more particularly be made of lauryl acrylate, stearyl acrylate, decyl acrylate, isodecyl acrylate and dodecyl acrylate, and foe corresponding methacrylates, lauryl methacrylate, stearyl methacrylate, decyl methacrylate, isodecyl methacrylate and dodecyl methacrylate.
(Meth)acrylic associative (co)polymers of this type are described and prepared, for example, according to patents US 3 915 921 and US 4509949.
The (meth)acrylic associative (co)polymer that may be used for the present invention may more particularly denote polymers formed from a mixture of monomers comprising:
(i) acrylic acid and one or more esters of formula (III) below.
Figure imgf000014_0002
in which R3 denotes H or CH3, R4 denoting an alkyl radical having from 12 to 22 carbon atoms, and optionally a crosslinking agent, for instance those consisting of from 95% to 60% by weight of acrylic acid (hydrophilic unit), 4% to 40% by weight of C10-C30 alkyl acrylate (hydrophobic unit), and 0 to 6% by weight of crosslinking polymerizable monomer, or 98% to 96% by weight of acrylic acid (hydrophilic unit), 1% to 4% by weight of C10-C30 alkyl acrylate (hydrophobic unit) and 0.1% to 0,6% by weight of crosslinking polymerizable monomer, or
(ii) essentially acrylic acid and lauryl methacrylate, such as foe product formed from 66% by weight of acrylic acid and 34% by weight of lauryl methacrylate.
For these embodiments of the present invention, the term ‘‘crosslinking agent" can mean a monomer containing the group
Figure imgf000014_0003
and at least one other polymerizable group, foe unsaturated bonds of foe monomer being unconjugated relative to each other. As the crosslinking agent that may be used for foe present invention, mention may especially be made of polyallyl ethers especially such as poly allyl sucrose and polyallylpentaerythritol.
Among the said (meth)acrylic associative (co)polymers above, the ones particularly preferred for the present invention are the products sold by the company Goodrich under the trade names Pemulen TRI, Pemulen TR2, Carbopol 1382, and more preferably still Pemulen TRI, and foe product sold by foe company S.E.P.C. under the name Coatex SX.
As foe (meth)acrylic associative (co)polymer, mention may also be made of foe copolymer of methacrylic acid/mefoyl acrylate/dimethyl-meta-isopropenylbenzyl isocyanate of ethoxylated alcohol sold under the name Viscophobe DB 1000 by the company Amerchol. Other (meth)acrylic associative (co)polymers that may be used for the present invention may also be sulfonic polymers comprising at least one (meth)acrylic monomer bearing sulfonic group(s), in free form or partially or totally neutralized form and comprising at least one hydrophobic portion.
The said hydrophobic portion present in the said sulfonic polymers that may be used for the present invention preferably comprises from 8 to 22 carbon atoms, more preferably from 8 to 18 carbon atoms and more particularly from 12 to 18 carbon atoms.
Preferentially, these sulfonic polymers that may be used for the present invention are partially or totally neutralized with a mineral base (sodium hydroxide, potassium hydroxide or aqueous ammonia) or an organic base such as mono-, di- or triethanolamine, an aminomethylpropanediol, N-methylglucamine, basic amino adds, for instance arginine and lysine, and mixtures of these compounds.
These said sulfonic polymers generally have a number-average molecular weight ranging from 1000 to 20000000 g/mol, preferably ranging from 20000 to 5000000 g/mol and even more preferably from 100000 to 1 500000 g/mol.
The sulfonic polymers that may be used for fee present invention may or may not be crosslinked. Crosslinked polymers are preferably chosen.
When they are crosslinked, the crosslinking agents may be selected from polyolefinically unsaturated compounds commonly used for the crosslinking of polymers obtained by free-radical polymerization. Mention may be made, for example, of divinylbenzene, diallyl ether, dipropylene glycol diallyl ether, polyglycol diallyl ethers, triethylene glycol divinyl ether, hydroquinone diallyl ether, ethylene glycol diacrylatedi(meth)acrylate or tetraethylene glycol diacrylatedi(meth)acrylate, trimethylolpropane triacrylate, methylenebisacrylamide, methylenebismethacrylamide, triallylamine, triallyl cyanurate, diallyl maleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallyl ether, allyl (meth)acrylate, allyl ethers of alcohols of the sugar series, or other allyl or vinyl ethers of polyfunctional alcohols, and also allyl esters of phosphoric and/or vinylphosphonic acid derivatives, or mixtures of these compounds.
Methylenebisacrylamide, allyl methacrylate or trimethylolpropane triacrylate (TMPTA) will be used more particularly.
The degree of crosslinking will generally range from 0.01 mol% to 10 mol% and more particularly from 0.2 mol% to 2 mol% relative to the polymer.
The (meth)acrylic monomers bearing sulfonic group(s) of the sulfonic polymers that may be used for the present invention are chosen especially from (meth)acrylamido(C1-C22)alkylsulfonic acids and N-(C1-C22)alkyl(meth)acrylamido(C1-C22)alkylsulfonic acids, for instance undecylacrylamidomethanesulfonic add, and also partially or totally neutralized forms thereof.
(Meth)acrylamido(C1-C22)alkylsiilfonic acids, for instance acrylamidomethanesulfonic acid, acrylamidoethanesulfonic acid, acrylamidopropanesulfonic add, 2-acrylamido-2- methylpropanesulfonic acid, methacryIamido-2-methylpropanesulfonic add, 2-acrylamido-n- butanesulfonic acid, 2-acrylamido-2,4,4-trimethylpentanesulfonic add, 2- mefeacrylamidododecylsulfonic add or 2-acrylamido-2,6-dimethyl-3-heptanesulfonic acid, and also partially or totally neutralized forms thereof, will more preferentially be used. 2- Acrylamido-2-methylpropanesulfonic add (AMPS), and also partially or totally neutralized forms thereof, will even more particularly be used.
The (meth)acrylic associative thickeners that may be used for the present invention may be chosen especially from random amphiphilic AMPS polymers modified by reaction with a C6-C22 n- monoalkylamine or C6-C22 di-n-alkylamine, such as those described in patent application WO 00/31154 (which forms an integral part of the content of the description).
These polymers may also contain other ethylenically unsaturated hydrophilic monomers selected, for example, from (meth)acrylic acids, β-substituted alkyl derivatives thereof or esters thereof obtained with monoalcohols or mono- or polyalkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maleic acid, or mixtures of these compounds.
The (meth)acrylic associative thickeners bearing sulfonic group(s) that may particularly preferably be used for the present invention are preferably chosen from amphiphilic copolymers of AMPS and of at least one ethylenically unsaturated hydrophobic monomer comprising at least one hydrophobic portion containing from 8 to 50 carbon atoms, more preferably from 8 to 22 carbon atoms, more preferably still from 8 to 18 carbon atoms and more particularly 12 to 18 carbon atoms.
These same copolymers may also contain one or more ethylenically unsaturated monomers not comprising a fatty chain, such as (meth)acrylic acids, β-substituted alkyl derivatives thereof or esters thereof obtained with monoalcohols or mono- or polyalkylene glycols, (meth)acrylamides, vinylpyrrolidone, maleic anhydride, itaconic acid or maldc add, or mixtures of these compounds.
These copolymers are described especially in patent application EP-A-750899, patent US 5 089 578 and in the following Yotaro Morishima publications:
- Self-assembling amphiphilic polyelectrolytes and their nanostructures, Chinese Journal of Polymer Science, Vol. 18, No. 40, (2000), 323-336;
- Micelle formation of random copolymers of sodium 2-(aaylarmdo)-2-methylpropanesulfonate and a nonionic surfactant macromonomer in water as studied by fluorescence and dynamic light scattering, Macromolecules, 2000, Vol. 33, No. 10 - 3694-3704;
- Solution properties of micelle networks formed by nonionic moieties covalently bound to a polyelectrolyte: salt effects on rheological behavior - Langmuir, 2000, Vol. 16, No. 12, 5324-5332;
- Stimuli responsive amphiphilic copolymers of sodium 2-(acrylamido)-2 -methylpropanesulfonate and associative macromonomers, Polym. Preprint, Div. Polym. Chem. 1999, 40(2), 220-221.
The ethylenically unsaturated hydrophobic monomers of these particular copolymers are preferably selected from the acrylates or acrylamides of formula (IV) below:
Figure imgf000016_0001
in which R5 and R7, which may be identical or different, denote a hydrogen atom or a linear or branched C1-C6 alkyl radical (preferably methyl); Y denotes O or NH; R6 denotes a hydrophobic hydrocarbon-based radical containing at least 8 to 50 carbon atoms, more preferentially from 8 to 22 carbon atoms, even more preferentially from 6 to 18 carbon atoms and more particularly from 12 to 18 carbon atoms; x denotes the number of moles of alkylene oxide and ranges from 0 to 100.
The radical R6 is preferably chosen from linear C6-C18 alkyl radicals (for example n-hexyl, n- octyl, n-decyl, n-hexadecyl, n-dodecyl), or branched or cyclic C6-C18 alkyl radicals (for example cyclododecane (C12) or adamantane (C10)); C6-C18 perfluoroalkyl radicals (for example the group of formula -(CH2)2-(CF2)9-CF3); the cholesteryl radical (C27) or a cholesterol ester residue, for instance the cholesteryl oxyhexanoate group; aromatic polycyclic groups such as naphthalene or pyrene. Among these radicals, the ones that are more particularly preferred are linear alkyl radicals and even more particularly the n-dodecyl radical.
According to a particularly preferred form of the present invention, the monomer of formula (IV) comprises at least one alkylene oxide unit (x > 1) and preferably a polyoxyalkylene chain. The poly oxyalkylene chain preferentially consists of ethylene oxide units and/or propylene oxide units and even more particularly consists of ethylene oxide units. The number of oxyalkylene units generally ranges from 3 to 100, more preferably from 3 to 50 and more preferably still from 7 to 25.
Among these polymers, mention may be made of:
- copolymers, which may or may not be crosslinked and which may or may not be neutralized, comprising from 15% to 60% by weight of AMPS units and from 40% to 85% by weight of (C8- C16)alkyl(meth)acrylamide units or of (C8-C16)alkyl (meth)acrylate units, relative to the polymer, such as those described in patent Explication EP-A-750899;
- terpolymers comprising from 10 mol% to 90 mol% of acrylamide units, from 0.1 mol% to 10 mol% of AMPS units and from 5 mol% to 80 mol% of n-(C6-C18)alkylacrylamide units, such as those described in patent US-5 089578.
Mention may also be made of copolymers of totally neutralized AMPS and of dodecyl methacrylate, and also crosslinked and non-crosslinked copolymers of AMPS and of n- dodecylmethacrylamide, such as those described in the Morishima articles mentioned above.
Mention will be made of the copolymers constituted of 2-acrylamido-2-methylpropanesulfonic acid (AMPS) units of formula (V) below:
Figure imgf000017_0001
in which is a proton, an alkali metal cation, an alkaline-earth metal cation or an ammonium ion; and units of formula (VI) below:
Figure imgf000018_0001
in which x denotes an integer ranging from 3 to 100, preferably from 5 to 80 and more preferentially from 7 to 25; R5 has the same meaning as that indicated above in formula (IV) and R8 denotes a linear or branched C6-C22 and more preferentially C10-C22 alkyl.
The polymers that are preferred are those for which x = 25, R5 denotes methyl and R8 represents n-dodecyl; they are described in the Morishima articles mentioned above.
Furthermore, in formula (IV), the use of the monomers where x = 20 to 25, R5 denotes methyl and R8 represents a C12-C24 alkyl group, preferably, for example, a lauryl group, myristyl group, palmityl group, stearyl group, or behenyl group is particularly preferred. Especially, the use of the monomers of the formula (TV), wherein x = 20 to 25, R5 denotes methyl and R8 represents a C16-C24 alkyl chain, such as a stearyl group, or behenyl group is particularly preferred.
The polymers for which X+" denotes sodium or ammonium are more particularly preferred.
The (b) associative polymer may not be crosslinked, or may be partially or totally crosslinked with at least one standard crosslinking agent The at least one crosslinking agent can be chosen, for example, from polyunsaturated compounds, such as polyethylenically u j
Figure imgf000018_0002
urated compounds. For example, these compounds can be chosen from polyalkenyl ethers of sucrose, polyalkenyl ethers of polyols, diallyl phthalates, divinylbenzene, allyl (meth)acrylate, ethylate glycol di(meth)aciylate, methylenebisacrylamide trimethylolpropane tri(meth)acrylate, diallyl itaconate, diallyl fumarate, diallyl maleate, zinc (meth)acrylate, castor oil derivatives and polyol derivatives manufactured from unsaturated carboxylic acids.
In one preferred embodiment, the (b) associative polymer is not crosslinked.
The amount of the (b) associative polymers) in the composition according to the present invention may be from 0.1% by weight or more, preferably 0.3% by weight or more, and more preferably 0.5% by weight or more, relative to the total weight of the composition.
The amount of the (b) associative polymer(s) in the composition according to the present invention may be 5% by weight or less, preferably 3% by weight or less, and more preferably 1% by weight or less, relative to the total weight of the composition.
The amount of the (b) associative polymers) in the composition according to the present invention may be from 0.1% to 5% by weight, preferably from 0.3% to 3% by weight, and more preferably from 0.5% to 1% by weight relative to the total weight of the composition.
(Polyglyceryl Fatty Acid Ester) The composition according to the present invention comprises (c) at least one polyglyceryl fetty acid ester. Two or more polyglyceryl fetty acid esters may be used in combination. Thus, a single type of polyglyceryl fetty add ester or a combination of different types of polyglyceryl fatty add esters may be used.
The polyglyceryl fetty acid ester can function as a nonionic surfactant
The inventors of the present invention surprisingly discovered that the use of the (c) polyglyceryl fatty add ester in combination with the (b) associative polymer comprising one or more acrylic and/or methacrylic units and (d) organic filler can effectively increase the viscosity of the composition according to the present invention even in a small amount, and thus can provide the stable composition. Furthermore, the inventors of the present invention surprisingly discovered that the use of the combination of the ingredients (b) to (d) can provide inproved cosmetic effects such as light and fresh sensation and non-oily/greasy feeling aspects.
It is preferable that the polyglyceryl fetty acid ester have a polyglycerol moiety derived from 2 to 10 glycerols, more preferably from 2 to 8 glycerols, and further more preferably from 2 to 6 glycerols.
The polyglyceryl fatty acid ester may have an HLB (Hydrophilic Lipophilic Balance) value of from 7.0 to 16.0, preferably from 8.0 to 15.0, and more preferably from 10.0 to 13.0. If two or more polyglyceryl fatty acid esters are used, the HLB value is determined by the weight average of the HLB values of all the polyglyceryl fatty acid esters.
The polyglyceryl fetty acid ester may be chosen from the mono, di and tri esters of saturated or unsaturated acid, preferably saturated acid, including 4 to 30 carbon atoms, preferably 6 to 20 carbon atoms, and more preferably 8 to 16 carbon atoms, such as lauric acid, oleic acid, stearic acid, isostearic acid, capric acid, caprylic acid, and myristic acid.
The polyglyceryl fetty acid ester may be selected from the group consisting of PG2 caprylate, PG2 sesquicaprylate, PG2 dicaprylate, PG2 tricaprylate, PG2 caprate, PG2 sesquicaprate, PG2 dicaprate, PG2 tricaprate, PG2 laurate, PG2 sesquilaurate, PG2 dilaurate, PG2 trilaurate, PG2 myristate, PG2 sesquimyristate, PG2 dimyristate, PG2 trimyristate, PG2 stearate, PG2 sesquistearate, PG2 distearate, PG2 tristearate, PG2 isostearate, PG2 sesquiisostearate, PG2 diisostearate, PG2 triisostearate, PG2 oleate, PG2 sesquioleate, PG2 dioleate, PG2 trioleate, PG3 caprylate, PG3 sesquicaprylate, PG3 dicaprylate, PG3 tricaprylate, PG3 caprate, PG3 sesquicaprate, PG3 dicaprate, PG3 tricaprate, PG3 laurate, PG3 sesquilaurate, PG3 dilaurate, PG3 trilaurate, PG3 myristate, PG3 sesquimyristate, PG3 dimyristate, PG3 trimyristate, PG3 stearate, PG3 sesquistearate, PG3 distearate, PG3 tristearate, PG3 isostearate, PG3 sesquiisostearate, PG3 diisostearate, PG3 triisostearate, PG3 oleate, PG3 sesquioleate, PG3 dioleate, PG3 trioleate, PG4 caprylate, PG4 sesquicaprylate, PG4 dicaprylate, PG4 tricaprylate, PG4 caprate, PG4 sesquicaprate, PG4 dicaprate, PG4 tricaprate, PG4 laurate, PG4 sesquilaurate, PG4 dilaurate, PG4 trilaurate, PG4 myristate, PG4 sesquimyristate, PG4 dimyristate, PG4 trimyristate, PG4 stearate, PG4 sesquistearate, PG4 distearate, PG4 tristearate, PG4 isostearate, PG4 sesquiisostearate, PG4 diisostearate, PG4 triisostearate, PG4 oleate, PG4 sesquioleate, PG4 dioleate, PG4 trioleate, PG5 caprylate, PG5 sesquicaprylate, PGS dicaprylate, PGS tricaprylate, PGS tetracaprylate, PGS caprate, PGS sesquicaprate, PGS dicaprate, PGS tricaprate, PGS tetracaprate, PGS laurate, PGS sesquilaurate, PGS dilaurate, PGS trilaurate, PGS tetralaurate, PGS myristate, PGS sesquimyristate, PGS dimyristate, PGS trimyristate, PGS tetramyristate, PGS stearate, PGS sesquistearate, PGS distearate, PGS tristearate, PGS tetrastearate, PGS isostearate, PGS sesquiisostearate, PG5 diisostearate, PGS triisostearate, PGS tetraisostearate, PGS oleate, PGS sesquioleate, PGS dioleate, PGS trioleate, PGS tetraoleate, PG6 caprylate, PG6 sesquicaprylate, PG6 dicaprylate, PG6 tricaprylate, PG6 tetracaprylate, PG6 pentacaprylate, PG6 equate, PG6 sesquicaprate, PG6 dicaprate, PG6 tricaprate, PG5 tetracaprate, PG6 pentacaprate, PG6 laurate, PG6 sesquilaurate, PG6 dilaurate, PG6 trilaurate, PG6 tetralaurate, PG6 pentalaurate, PG6 myristate, PG6 sesquimyristate, PG6 dimyristate, PG6 trimyristate, PG6 tetramyristate, PG6 pentamyristate, PG6 stearate, PG6 sesquistearate, PG6 distearate, PG6 tristearate, PG6 tetrastearate, PG6 pentastearate, PG6 isostearate, PG6 sesquiisostearate, PG6 diisostearate, PG6 triisostearate, PG6 tetraisostearate, PG6 pentaisostearate, PG6 oleate, PG6 sesquioleate, PG6 dioleate, PG6 trioleate, PG6 tetraoleate, PG6 pentaoleate, PG10 caprylate, PG10 sesquicaprylate, PG10 dicaprylate, PG10 tricaprylate, PG10 tetracaprylate, PG10 pentacaprylate, PG10 hexacaprylate, PG10 equate, PG10 sesquicaprate, PG10 dicaprate, PG10 tricaprate, PG10 tetracaprate, PG10 pentacaprate, PG10 hexacaprate, PG10 laurate, PG10 sesquilaurate, PG10 dilaurate, PG10 trilaurate, PG10 tetralaurate, PG10 pentalaurate, PG10 hexalaurate, PG10 myristate, PG10 sesquimyristate, PG10 dimyristate, PG10 trimyristate, PG10 tetramyristate, PG10 pentamyristate, PG10 hexamyristate, PG10 stearate, PG10 sesquistearate, PG10 distearate, PG10 tristearate, PG10 tetrastearate, PG10 pentastearate, PG10 hexastearate, PG10 isostearate, PG10 sesquiisostearate, PG10 diisostearate, PG10 triisostearate, PG10 tetraisostearate, PG10 pentaisostearate, PG10 hexaisostearate, PG10 oleate, PG10 sesquioleate, PG10 dioleate, PG10 trioleate, PG10 tetraoleate, PG10 pentaoleate, and PG10 hexaoleate.
It is preferable that the polyglyceryl fetty acid ester be chosen from: polyglyceryl caprate comprising 2 to 6 glycerol units, polyglyceryl monooleate comprising 2 to 6 glycerol units, and mixtures thereof.
In one embodiment of the present invention, the (c) polyglyceryl fatty acid ester comprises two or more types of the polyglyceryl fatty acid esters.
In another embodiment of the present invention, the (c) polyglyceryl fatty acid ester comprises at least one polyglyceryl fatty acid ester having a polyglycerol moiety derived from 2 to 3 glycerols and at least one polyglyceryl fatty add ester having a polyglycerol moiety derived from 4 to 8 glycerols, preferably 4 to 6 glycerols in combination.
It is preferable that the (c) polyglyceryl fatty acid ester comprise a combination of polyglyceryl caprate comprising 2 to 6 glycerol units, preferably 4 to 6 glycerol units, and polyglyceryl monooleate comprising 2 to 3 glycerol units.
The amount of the polyglyceryl fetty acid ester(s) in the composition according to the present invention may be 0.1% by weight or more, preferably 0.3% by weight or more, and more preferably 0.5% by weight or more relative to the total weight of the composition.
On the other hand, the amount of the polyglyceryl fatty acid ester(s) in the composition according to the present invention may be 3% by weight or less, preferably 2% by weight or less, and more preferably 1% by weight or less relative to the total weight of the composition.
Thus, the amount of the polyglyceryl fatty acid ester(s) in the composition according to the present invention may range from 0.1% to 3% by weight, preferably from 0.3% to 2% by weight, and more preferably from 0.5% to 1% by weight relative to the total weight of the composition. (Organic Filler)
The composition according to the present invention comprises (d) at least one organic filler. Two or more organic fillers may be used in combination. Thus, a single type of organic filler or a combination of different types of organic fillers may be used.
The term “filler” should be understood as natural or synthetic particles of any shape, which are substantively insoluble in the medium of the composition at room temperature (25°C) and atmospheric pressure (105 Pa).
It is preferable that the (d) organic filler be in the form of a fine particle such that fee mean (primary) particle diameter thereof ranges fiom 0.2 pm to 20 pm. The mean (primary) particle size or mean (primary) particle diameter here is an arithmetic mean diameter. The term “mean primary particle size” used herein can represent a volume-average size mean diameter which is given by the statistical partide size distribution to half of the population, referred to as Dso. For example, the volume-average size mean diameter can be measured by a laser diffraction particle size distribution analyzer, such as Mastersizer 2000 by Malvern Corp.
The (d) organic filler used for the present invention may be in any particulate shape, such as spherical shape, oblong shape, or platelet-shape.
The (d) organic filler can be selected fiom organic polymer fillers, non-polymeric organic fillers, and a combination thereof. Preferably, the (d) organic polymer filler is selected fiom organic polymer fillers. Thus, the (d) organic fillo- preferably comprises at least one organic polymer filler.
The organic polymer fillers can be chosen from polysaccharides. Thus, in one preferred embodiment, the (d) organic filler is selected from polysaccharide particles.
The polysaccharides can be selected fiom polysaccharides derived from plants. In other words, it is preferable that the polysaccharide be of plant origin.
According to the present invention, the term "polysaccharides derived from plants" especially means polysaccharides obtained from the plant kingdom (plants or algae), as opposed to polysaccharides obtained via biotechnology, as is the case, for example, for xanthan gum, which is produced especially by fermentation of a bacterium, Xanthomonas campestris.
As examples of polysaccharides of plant origin that may be used according to the present invention, mention may be made especially of: a) algal extracts, such as alginates, carrageenans and agars, and mixtures thereof. Examples of carrageenans that may be mentioned include Satiagum UTC30® and UTC10® fiom the company Degussa; an alginate that may be mentioned is the sodium alginate sold under the name Kelcosol® by the company ISP; b) gums, such as guar gum and nonionic derivatives thereof (hydroxypropyl guar), gum arahic, konjac gum or mannan gum, gum tragacanth, ghatti gum, karaya gum or locust bean gum; examples that may be mentioned include the guar gum sold under the name Jaguar HP 105® by the company Rhodia; the mannan and konjac gum® (1% gluconomannan) sold by the company GfN; c) modified or unmodified starches, such as those obtained, for example, fiom cereals, for instance wheat, com or rice, from legumes, for instance blonde pea, from tubers, for instance potato or cassava, and tapioca stardies; dextrins, such as com dextrins; examples that may especially be mentioned include the rice starch Remy DR I® sold by the company Remy; the com starch B® from the company Roquette; the potato starch modified with 2- chloroethylaminodipropionic acid neutralized with sodium hydroxide, sold under the name Structure Solanace® by the company National Starch; the native tapioca starch powder sold under the name Tapioca pure® by the company National Starch; d) dextrins, such as the dextrin extracted from com under the name Index® from the company National Starch; e) cyclodextrins, such as alpha-, beta- and gamma-cyclodextrins, and derivatives thereof, and combinations thereof;
0 celluloses and derivatives thereof, and mixtures thereof.
The starch can include all starches derived from any native source, any of which may be suitable for use herein. A native starch, as used herein, is one as it is found in nature. Also suitable are starches derived from a plant obtained by standard breeding techniques including crossbreeding, translocation, inversion, transformation or any other method of gene or chromosome engineering to include variations thereof. In addition, starches derived from a plant grown from artificial mutations and variations of the above generic starches, which may be produced by known standard methods of mutation breeding, are also suitable herein..
Typical sources for the stardies are cereals, tubers, roots, legumes and fruits. The native source can be waxy varieties of com (maize), pea, potato, sweet potato, banana, barley, wheat, rice, oat, sago, amaranth, tapioca (cassava), arrowroot, canna, and sorghum, as well as low and high amylose varieties thereof. As used herein, the term "low amylose" starch is intended to include a starch containing no more than about 10%, particularly no more than 5%, and more particularly no more than 2% amylose by weight As used herein, the term "high amylose" starch is intended to include a starch containing at least about 50%, particularly at least about 70%, and more particularly at least about 80% amylose by weight High amylose starches may be preferable.
Preferably, the starch is selected from com (zea mays) starch.
The term “cyclodextrin derivatives” here indicate molecules of which a part at least of the OH- hydroxyl groups has been transformed into OR groups, where R generally designates an alkyl group. The cyclodextrin derivatives in particular include the methylated, ethylated cyclodextrins, but also those substituted with a hydroxyalkyl group such as hydroxypropylated and hydroxyethylated cyclodextrins.
The cellulose derivative may be chosen from cellulose esters and ethers. It is indicated that the term "cellulose ester" means, in the text hereinabove and hereinbelow, a polymer consisting of an a (1-4) sequence of partially or totally esterified anhydroglucose rings, the esterification being obtained by the reaction of all or only some of the free hydroxyl functions of the said anhydroglucose rings with a linear or branched carboxylic acid or carboxylic acid derivative (acid chloride or acid anhydride) containing from 1 to 4 carbon atoms. Advantageously, the cellulose esters are chosen from cellulose acetates, propionates, butyrates, isobutyrates, acetobutyrates and acetopropionates, and mixtures thereof. hi one embodiment of the present invention, the polysaccharide be chosen from algal extracts. The algal extracts may be chosen from alginates, carrageenans and agars, and mixtures thereof. In one preferred embodiment, the (d) organic filler is selected from polysaccharides, preferably fiom starches, and in particular fiom com (zea mays) starches.
The amount of the (d) organic fillers) in the composition according to the present invention may be from 0.1% by weight or more, preferably 1% by weight or more, and more preferably 2% by weight or more, relative to the total weight of the composition.
The amount of the (d) organic fillers) in the composition according to the present invention may be 10% by weight or less, preferably 7% by weight or less, and more preferably 5% by weight or less, relative to the total weight of the composition.
The amount of the (d) organic fillers) in the composition according to tire present invention may be from 0.1% to 10% by weight, preferably from 1% to 7% by weight, and more preferably from 2% to 5% by weight relative to the total weight of the composition.
(Other Ingredients)
• Water
The composition according to the present invention may or may not comprise water.
The amount of water in the composition may be from 5% by weight or more, preferably 10% by weight or more, more preferably 20% by weight or more, and/or 75% by weight or less, preferably 50% by weight or less, and more preferably 40% by weight or less, relative to the total weight of the composition.
The amount of the water in the composition according to file present invention may be range fiom 5% to 75% by weight, preferably fiom 10% to 50% by weight, and more preferably fiom 20% to 40% by weight relative to the total weight of the composition.
• Oil
The composition according to the present invention may or may not comprise at least one oil If two or more oils are used, they may be the same or different
The oil is different from the lipophilic organic UV filter as explained above.
Here, “oil” means a fatty compound or substance which is in the form of a liquid or a paste (nonsolid) at room temperature (25°C) under atmospheric pressure (760 mmHg). As the oils, those generally used in cosmetics can be used alone or in combination thereof. These oils may be volatile or non-volatile.
The oil may be a non-polar oil such as a hydrocarbon oil, a silicone oil, or the like; a polar oil such as a plant or animal oil and an ester oil or an ether oil; or a mixture thereof.
The oil may be selected from the group consisting of oils of plant or animal origin, synthetic oils, silicone oils, hydrocarbon oils, and fatty alcohols.
As examples of plant oils, mention may be made of, for example, linseed oil, camellia oil, macadamia nut oil, com oil, mink oil, olive oil, avocado oil, sasanqua oil, castor oil, safflower oil, jojoba oil, sunflower oil, almond oil, rapeseed oil, sesame oil, soybean oil, peanut oil, and mixtures thereof.
As examples of animal oils, mention may be made of, for example, squalene and squalane.
As examples of synthetic oils, mention may be made of alkane oils such as isododecane and isohexadecane, ester oils, ether oils, and artificial triglycerides.
The ester oils are preferably liquid esters of saturated or unsaturated, linear or branched C1-C26 aliphatic monoacids or polyacids and of saturated or unsaturated, linear or branched C1-C26 aliphatic monoalcohols or polyalcohols, the total number of carbon atoms of the esters being greater than or equal to 10.
Preferably, for the esters of monoalcohols, at least one from among the alcohol and the add from which the esters are derived is branched.
Among the monoesters of monoacids and of monoalcohols, mention may be made of ethyl palmitate, ethyl hexyl palmitate, isopropyl palmitate, dicaprylyl carbonate, alkyl myristates such as isopropyl myristate or ethyl myristate, isocetyl stearate, 2-ethylhexyl isononanoate, isononyl isononanoate, isodecyl neopentanoate, and isostearyl neopentanoate.
Esters of C4-C22 dicarboxylic or tricarboxylic acids and of C1-C22 alcohols, and esters of monocarboxylic, dicarboxylic, or tricarboxylic acids and of non-sugar C4-C26 dihydroxy, trihydroxy, tetrahydroxy, or pentahydroxy alcohols may also be used.
Mention may especially be made of: diethyl sebacate; isopropyl lauroyl sarcosinate; diisopropyl sebacate; bis(2-ethylhexyl) sebacate; diisopropyl adipate; di-n-propyl adipate; dioctyl adipate; bis(2 -ethylhexyl) adipate; diisostearyl adipate; bis(2-ethylhexyl) maleate; triisopropyl citrate; triisocetyl citrate; triisostearyl citrate; glyceryl trilactate; glyceryl trioctanoate; trioctyldodecyl citrate; trioleyl citrate; neopentyl glycol diheptanoate; diethylene glycol diisononanoate, and coco- caprylate/caprate.
As ester oils, one can use sugar esters and diesters of C6-C30 and preferably C12-C22 fatty acids. It is recalled that the term “sugar” means oxygen-bearing hydrocarbon-based compounds containing several alcohol functions, with or without aldehyde or ketone functions, and which comprise at least 4 carbon atoms. These sugars may be monosaccharides, oligosaccharides, or polysaccharides.
Examples of suitable sugars that may be mentioned include sucrose (or saccharose), glucose, galactose, ribose, fucose, maltose, fructose, mannose, arabinose, xylose, and lactose, and derivatives thereof, especially alkyl derivatives, such as methyl derivatives, for instance methylglucose.
The sugar esters of fatty acids may be chosen especially from the group comprising the esters or mixtures of esters of sugars described previously, and of linear or branched, saturated or unsaturated C6-C30 and preferably C12-C22 fatty acids. If they are unsaturated, these compounds may have one to three conjugated or non-conjugaied carbon-carbon double bonds.
The esters according to this variant may also be selected from monoesters, diesters, triesters, tetraesters, and polyesters, and mixtures thereof. These esters may be, for example, oleates, laurates, palmitates, myristates, behenates, cocoates, stearates, linoleates, linolenates, caprates, and arachidonates, or mixtures thereof such as, especially, oleopalmitate, oleostearate, and palmitostearate mixed esters, as well as pentaerythrityl tetraethyl hexanoate.
More particularly, use is made of monoesters and diesters and especially sucrose, glucose, or methylglucose monooleates or dioleates, stearates, behenates, oleopalmitaies, linoleates, linolenates, and oleostearates.
An example that may be mentioned is the product sold under the name Glucate® DO by the company Amerchol, which is a methylglucose dioleate.
As examples of preferable ester oils, mention may be made of, for example, diisopropyl adipate, dioctyl adipate, 2-ethylhexyl hexanoate, ethyl laurate, cetyl octanoate, octyldodecyl octanoate, isodecyl neopentanoate, myristyl propionate, 2-ethylhexyl 2-ethylhexanoaie, 2-ethylhexyl octanoate, 2-ethylhexyl caprylate/caprate, methyl palmitate, ethyl palmitate, isopropyl palmitate, dicaprylyl carbonate, isopropyl lauroyl sarcosinate, isononyl isononanoate, ethylhexyl palmitate, isohexyl laurate, hexyl laurate, isocetyl stearate, isopropyl isostearate, isopropyl myristate, isodecyl oleate, glyceryl tri(2-ethylhexanoate), pentaerythrithyl tetra(2-ethylhexanoate), 2- ethylhexyl succinate, diethyl sebacate, and mixtures thereof.
As examples of artificial triglycerides, mention may be made of, for example, capryl caprylyl glycerides, glyceryl trimyristate, glyceryl tripalmitate, glyceryl trilinolenate, glyceryl trilaurate, glyceryl tricaprate, glyceryl tricaprylate, glyceryl tri(caprate/caprylate), and glyceryl tri(caprate/caprylate/linolenaie).
As examples of silicone oils, mention may be made of, for example, linear organopolysiloxanes such as dimethylpolysiloxane, methylphenylpolysiloxane, methylhydrogenpolysiloxane, and the like; cyclic organopolysiloxanes such as cyclohexasiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, and the like; and mixtures thereof.
Preferably, the silicone oil is chosen from liquid polydialkylsiloxanes, especially liquid polydimethylsiloxanes (PDMS) and liquid polyorganosiloxanes comprising at least one aryl group.
These silicone oils may also be organomodified. The organomodified silicones that can be used for the present invention are silicone oils as defined above, and comprise in their structure one or more organofunctional groups attached via a hydrocarbon-based group.
Organopolysiloxanes are defined in greater detail in Walter Noll’s Chemistry and Technology of Silicones (1968), Academic Press. They may be volatile or non-volatile.
When they are volatile, the silicones are more particularly chosen from those having a boiling point of between 60°C and 260°C, and even more particularly from:
(i) cyclic polydialkylsiloxanes comprising from 3 to 7 and preferably 4 to 5 silicon atoms. These are, for example, octamethylcyclotetrasiloxane sold in particular under the name Volatile Silicone® 7207 by Union Carbide or Silbione® 70045 V2 by Rhodia, decamethylcyclopentasiloxane sold under the name Volatile Silicone® 7158 by Union Carbide, Silbione® 70045 V5 by Rhodia, and dodecamethylcyclopentasiloxane sold under the name Silsoft 1217 by Momentive Performance Materials, and mixtures thereof. Mention may also be made of cyclocopolymers of the type such as dimetiiylsiloxane/metiiylalkylsiloxane, such as Silicone Volatile® FZ 3109 sold by the company Union Carbide, of the formula:
Figure imgf000026_0001
Mention may also be made of mixtures of cyclic polydialkylsiloxanes with organosilicon compounds, such as the mixture of octamethylcyclotetrasiloxane and tetrairimethylsilylpentaerythritol (50/50) and the mixture of octamethylcyclotetrasiloxane and oxy-1,1 ’-bis(2,2,2’,2\3,3’-hexatrimethylsilyloxy)neopentane; and
(ii) linear volatile polydialkylsiloxanes containing 2 to 9 silicon atoms and having a viscosity of less than or equal to 5x10-6 m2/s at 25°C. An example is decamethyltetrasiloxane sold in particular under the name SH 200 by the company Toray Silicone. Silicones belonging to this category are also described in the article published in Cosmetics and Toiletries, Vol. 91, Jan. 76, pp. 27-32, Todd & Byers, Volatile Silicone Fluids for Cosmetics. The viscosity of the silicones is measured at 25°C according to ASTM standard 445 Appendix C.
Non-volatile polydialkylsiloxanes may also be used. These non-volatile silicones are more particularly chosen ftom polydialkylsiloxanes, among which mention may be made mainly of polydimethylsiloxanes containing trimethylsilyl end groups.
Among these polydialkylsiloxanes, mention may be made, in a non-limiting manner, of the following commercial products: the Silbione® oils of the 47 and 70047 series or the Mirasil® oils sold by Rhodia, for instance the oil 70047 V 500000; the oils of the Mirasil® series sold by the company Rhodia; the oils of the 200 series fiom the company Dow Coming, such as DC200 with a viscosity of 60000 mm2/s; and the Viscasil® oils fiom General Electric and certain oils of the SF series (SF 96, SF 18) fiom General Electric.
Mention may also be made of polydimethylsiloxanes containing dimethylsilanol end groups known under the name dimethiconol (CTFA), such as the oils of the 48 series from the company Rhodia.
Among the silicones containing aryl groups, mention may be made of polydiarylsiloxanes, especially polydiphenylsiloxanes and polyalkylarylsiloxanes such as phenyl silicone oil.
The phenyl silicone oil may be chosen ftom the phenyl silicones of the following formula:
Figure imgf000027_0001
in which
R1 to R10, independently of each other, are saturated or unsaturated, linear, cyclic or branched C1- C30 hydrocarbon-based radicals, preferably C1-C12 hydrocarbon-based radicals, and more preferably C1-C6 hydrocarbon-based radicals, in particular methyl, ethyl, propyl, or butyl radicals, and m, n, p, and q are, independently of each other, integers of 0 to 900 inclusive, preferably 0 to 500 inclusive, and more preferably 0 to 100 inclusive, with the proviso that the sum n+m+q is other than 0.
Examples that may be mentioned include the products sold under fee following names: fee Silbione® oils of the 70641 series from Rhodia; the oils of fee Rhodorsil® 70633 and 763 series from Rhodia; fee oil Dow Coming 556 Cosmetic Grade Fluid from Dow Coming; fee silicones of the PK series from Bayer, such as fee product PK20; certain oils of fee SF series from General Electric, such as SF 1023, SF 1154, SF 1250, and SF 1265.
As the phenyl silicone oil, phenyl trimethicone (R1 to R10 are methyl; p, q, and n = 0; m=l in the above formula) is preferable.
The hydrocarbon oils may be chosen from: linear or branched, optionally cyclic, C5-C19 alkanes, such as C15-C19 alkane, Examples that may be mentioned include hexane, undecane, dodecane, tridecane, and isoparaffins, for instance isohexadecane, isododecane, and isodecane; and linear or branched hydrocarbons containing more than 16 carbon atoms, such as liquid paraffins, liquid petroleum jelly, polydecenes and hydrogenated polyisobutenes such as Parleam®, and squalane.
As preferable examples of hydrocarbon oils, mention may be made of, for example, linear or branched hydrocarbons such as isohexadecane, isododecane, squalane, mineral oil (e.g., liquid paraffin), paraffin, vaseline or petrolatum, naphthalenes, and the like; hydrogenated polyisobutene, isoeicosan, and decene/butene copolymer, and mixtures thereof.
The term “fatty” in the fatty alcohol means the inclusion of a relatively large number of carbon atoms. Thus, alcohols which have 4 or more, preferably 6 or more, and more preferably 12 or more carbon atoms are encompassed within the scope of fetty alcohols. The fetty alcohol may be saturated or unsaturated. The fatty alcohol may be linear or branched. The fetty alcohol may have the structure R-OH wherein R is chosen from saturated and unsaturated, linear and branched radicals containing from 4 to 40 carbon atoms, preferably from 6 to 30 carbon atoms, and more preferably from 12 to 20 carbon atoms. In at least one embodiment, R may be chosen from C12-C20 alkyl and C12-C20 alkenyl groups. R may or may not be substituted with at least one hydroxyl group.
As examples of the fatty alcohol, mention may be made of lauryl alcohol, cetyl alcohol, steaiyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, oleyl alcohol, linoleyl alcohol, palmitoleyl alcohol, arachidonyl alcohol, erucyl alcohol, and mixtures thereof.
It is preferable that the fetty alcohol be a saturated fetty alcohol.
Thus, the fetty alcohol may be selected from straight or branched, saturated or unsaturated C6-C30 alcohols, preferably straight or branched, saturated C6-C30 alcohols, and more preferably straight or branched, saturated C12-C20 alcohols.
The term “saturated fatty alcohol” here means an alcohol having a long aliphatic saturated carbon chain. It is preferable that the saturated fatty alcohol be selected from any linear or branched, saturated C6-C30 fatty alcohols. Among the linear or branched, saturated C6-C30 fatty alcohols, linear or branched, saturated C12-C20 fetty alcohols may preferably be used. Any linear or branched, saturated C16-C20 fetty alcohols may be more preferably used. Branched C16-C20 fetty alcohols may be even more preferably used.
As examples of saturated fetty alcohols, mention may be made of lauryl alcohol, cetyl alcohol, steaiyl alcohol, isostearyl alcohol, behenyl alcohol, undecylenyl alcohol, myristyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof. In one embodiment, cetyl alcohol, steaiyl alcohol, octyldodecanol, hexyldecanol, or a mixture thereof (e.g., cetearyl alcohol) as well as behenyl alcohol, can be used as a saturated fetty alcohol.
According to at least one embodiment, the fetty alcohol used in the composition according to the present invention is preferably chosen from cetyl alcohol, octyldodecanol, hexyldecanol, and mixtures thereof.
It is also preferable that the oil be chosen from oils with a molecular weight below 600 g/mol.
Preferably, the oil has a low molecular weight such as below 600 g/mol, chosen among ester oils with a short hydrocarbon chain or chains (C1-C12) (e.g., isopropyl lauroyl sarcosinate, isopropyl myristate, isopropyl palmitate, isononyl isononanoate, and ethyl hexyl palmitate), silicone oils (e.g., volatile silicones such as cyclohexasiloxane), hydrocarbon oils (e.g., isododecane, isohexadecane, and squalane), branched and/or unsaturated fatty alcohol (C12-C30) type oils such as octyldodecanol and oleyl alcohol, and ether oils such as dicaprylyl ether.
The oil may be chosen from polar oils, preferably from ester oils, and hydrocarbon oils, and combinations thereof.
The amount of the oil(s) in the composition according to the present invention may be 10% by weight or more, preferably 15% by weight or more, and more preferably 20% by weight or more, relative to the total weight of the composition. On the other hand, the amount of the oil(s) in the composition according to the present invention may be 50% by weight or less, preferably 40% by weight or less, and more preferably 35% by weight or less, relative to the total weight of the composition.
The amount of the oil(s) in the composition according to the present invention may range from 10% to 50% by weight, preferably from 15% to 40% by weight, more preferably from 20% to 35% by weight, relative to the total weight of the composition.
• Inorganic Particle
The composition according to the present invention may or may not comprise at least one inorganic particle. A single type of inorganic particle may be used, but two or more different types of inorganic particle may be used in combination.
The inorganic particle is different form the inorganic UV filter as explained above.
The particle size of the inorganic particle corresponds to a primary particle size. In addition, the particle size here means an average or mean particle size, which may be a volume-average particle size, which can be determined by, for example, a laser diffraction particle size analyzer.
The particle size of the inorganic particle used for the present invention is not limited. However, it is preferable that the particle size of the inorganic particle be 50 pm or less, preferably 30 pm or less, more preferably 15 pm or less, even more preferably 10 pm or less, and particularly preferably from 2 to 5 pm.
The inorganic particle may or may not be porous, preferably non-porous.
The inorganic particle may be hollow or solid, preferably hollow.
The inorganic particle may comprise or consists of at least one material selected from:
- metal oxides such as zirconium oxides, cerium oxides, iron oxides and titanium oxides,
- alumina,
- silicates such as talc, clays and kaolin,
- glass particles,
- silica (silicon dioxide),
- calcium carbonate or magnesium carbonate,
- magnesium hydrogen carbonates,
- hydroxyapatite, and
- mixtures thereof.
Among the silica particles, mention may be made of hollow spherical silica particles such as the products sold under the trade name BA4 from the company JGC Catalysts and Chemicals Ltd. in Japan.
The amount of the inorganic particle(s) in the composition according to the present invention may range from 1% to 20% by weight, preferably from 2% to 15% by weight, more preferably from 3% to 10% by weight, relative to the total weight of the composition.
• Lipophilic Thickener The composition according to the present invention may or may not comprise at least one lipophilic thickener. Two or more lipophilic thickeners can be combined.
The lipophilic thickener is different from the (b) associative polymer which comprises at least one hydrophilic part
The lipophilic thickener may be in the form of polymer or particles.
The lipophilic polymer thickener may be chosen from carboxyvinyl polymers such as the Carbopol products (carbomers) and the Pemulen products (acrylate/C10-C30-alkyl acrylate copolymer) or polymers having the INCI name 'Toly C10-30 Alkyl Acrylate", such as the Intelimer® products from Air Products, such as the product Intelimer® IPA 13-1, which is apolystearyl acrylate, or the product 30 Intelimer® IPA 13-6 which is a behenyl polymer: Particular mantion can be made of Acrylates/C10- 30 Alkyl Acrylate Crosspolymer which is sold under fee name of Carbopol® SC-200 Polymer from Lubrizol.
The lipophilic thickener according to the present invention may be chosen from:
- organomodified clays, which are clays treated with compounds chosen especially from quaternary amines and tertiary amines. Organomodified clays feat may be mentioned include organomodified bentonites, such as the product sold under the name Bentone 34 by the company Rheox, and organomodified hectorites such as the products sold under the names Bentone 27 and Bentone 38 by the company Rheox. Mention may be made especially of modified clays such as modified magnesium silicate (Bentone gel® VS38 from Rheox), modified hectorites such as hectorite modified with aC10 to C22 fatty acid ammonium chloride, for instance hectorite modified with distearyldimethylarnmonium chloride (disteardimonium hectorite) such as the product sold under the name Bentone 38VCG by the company Elementis or the product sold under the name Bentone 38 CE by the company Rheox, or the product sold under the name Bentone Gel® V55 V by the company Elementis, or the product sold under the name Bentone gel® ISD V by the company Elementis;
- and mixtures thereof.
The amount of the lipophilic thickeners) in the composition may be from 0.025 to 5% by weight, preferably from 0.05 to 3% by weight, and more preferably from 0.075 to 1% by weight, relative to the total weight of the composition.
• Cosmetically Acceptable Organic Solvent
The composition according to the present invention may or may not comprise at least one cosmetically acceptable organic solvent A single type of cosmetically acceptable organic solvent may be used, but two or more different types of cosmetically acceptable organic solvent may be used in combination.
The cosmetically acceptable organic solvents may include alcohols: in particular monovalent alcohols, such as ethyl alcohol, isopropyl alcohol, benzyl alcohol, phenoxyethanol and phenylethyl alcohol; diols such as ethylene glycol, caprylyl glycol, propylene glycol, dipropylene glycol, propane diol, and butylene glycol; other polyols such as glycerol, sugar, and sugar alcohols; and ethers such as ethylene glycol monomethyl, monoethyl, and monobutyl ethers, propylene glycol monomethyl, monoethyl, and monobutyl ether, and butylene glycol monomethyl, monoethyl, and monobutyl ethers.
The organic water-soluble solvents may be present in an amount ranging from 1% by weight or more, preferably 5% by wdght or more, and more preferably 10% by wdght or more, relative to the total weight of the composition.
The organic water-soluble solvents may be present in an amount ranging from 30% by weight or less, preferably 25% by weight or less, and more preferably 20% by weight or less, relative to the total weight of the composition
The organic water-soluble solvents may be presort in an amount ranging from 1% to 30% by weight, preferably from 5% to 25% by weight, and more preferably from 10% to 20% by weight, relative to the total weight of the composition.
• pH Adjusting Agent
The pH ofthe composition according to the present invention may be adjusted to the desired value using at least one pH adjusting agent, such as an acidifying or a basifying agent, for example, which are commonly used in cosmetic products.
The pH of the composition according to the present invention may be from 3 to 9, preferably 3.5 to 8, and more preferably from 4 to 7.
Among the acidifying agents, mention may be made, by way of example, of mineral or organic adds such as hydrochloric acid, ortho-phosphoric acid, sulfuric acid, carboxylic acids such as acetic acid, tartaric acid, dtric add, and lactic acid, and sulfonic adds.
Among the basifying agents, mention may be made, by way of example, of ammonium hydroxide, alkali metal carbonates, alkanolamines such as mono-, di- and triethanolamines and also their derivatives, alkali metal hydroxides such as sodium or potassium hydroxide and compounds of the formula below: wherein
Figure imgf000031_0001
W denotes an alkylene such as propylene optionally substituted by a hydroxyl or a C1-C4 alkyl radical, and Ra. Rb. Rc and Rd independently denote a hydrogen atom, an alkyl radical or a C1-C4 hydroxyalkyl radical, which may be exemplified by 1,3 -propanediamine and derivatives thereof.
The pH adjusting agent(s) may be used in an amount ranging from 0.001% to 10% by wdght, and preferably from 0.01% to 5% by wdght, relative to the total wdght of the composition.
• Adjuvants
The composition according to the present invention may also comprise an effective amount of additional optional ingredients), known previously elsewhere in cosmetic compositions, for example, anionic, cationic or amphoteric surfactants; nonionic surfactants other than (c) polyglyceryl fatty add ester, such as polyhydroxy stearic add; anionic, cationic, amphoteric, or nonionic polymer; sequestering agents such as EDTA and trisodium ethylenediamine disuccinate; preserving agents; antioxidant, such as hydroxyacetophenone; vitamins ar provitamins, for instance, pantihenol or tocopherol; fragrances; plant extracts; and so on The adjuvants may be present in fee composition of the present invention in an amount preferably ranging fiom 0.01% to 30% by weight, more preferably fiom 0.1% to 20% by weight, and even more preferably fiom 0.5% to 10% by weight, relative to the total weight of the composition.
In one embodiment of fee present invention, the composition according to fee present invention comprises anionic, cationic or amphoteric surfactants in an amount of 5% by weight or less, preferably 3% by weight or less, more preferably 1% by weight or less, even more preferably 0.5% by weight or less, and in particular 0.1% by weight, relative to the total weight of the composition. In another embodiment of the present invention, fee composition according to the present invention is free of any of anionic, cationic or amphoteric surfactants .
In one embodiment of the present invention, fee composition according to fee present invention comprises nonionic surfactants other than fee (c) polyglyceryl fatty acid ester in an amount of 1% by weight or less, preferably 0.8% by weight or less, more preferably 0.6% by weight or less, even more preferably 0.5 % by weight or less, and in particular 0.3 % by weight, relative to fee total weight of the composition. In another embodiment of tire present invention, fee amount of nonionic surfactants other than fee (c) polyglyceryl fetty add ester included in fee composition is less than the amount of fee (c) polyglyceryl fetty add ester included in fee composition.
[Preparation Method]
The composition according to the present invention can be prepared by mixing the essential ingredients) as explained above, and optional ingredients), if necessary, as explained above.
The method and means to mix fee above essential and optional ingredients are not limited. Any conventional method and means can be used to mix the above essential and optional ingredients to prepare fee composition according to fee present invention. The conventional method and means may include a homogenizer, for example a turbine mixer.
It is preferable that the composition according to the present invention have a viscosity of 1 Pa s or more, more preferably 3 Pa s or more, and even more preferably 5 Pa s or more. The viscosity can be measured with a B-type viscometer (for example, Rotor: No. 4, Rotation speed: 6 rpm, Measurement time: 1 minute) at 25°C.
It is also preferable that fee composition according to the present invention have a viscosity at 25°C of 20 Pa-s or less, more preferably 15 Pa-s or less, and even more preferably 10 Pa-s or less.
It may be preferable that the composition according to the present invention have a viscosity at 25°C of ftom 1 Pa-s to 20 Pa-s, more preferably fiom 3 Pa-s to 15 Pa-s, and even more preferably ftom 5 Pa-s to 10 Pa-s.
[Form]
The composition according to the present invention may be present in any form. For example, the composition according to fee present invention can be in the form of a solution, an emulsion, a lotion, a milky lotion, a toner, a cream, a liquid gel, a paste, a serum.
In one preferred embodiment, the composition of fee present invention is in fee form of an emulsion comprising an aqueous phase and an oily phase. The emulsion may be O/W or W/O form. In one preferred embodiment of fee present invention, the composition is in the form of O/W emulsion that may be a fluid, a paste or a cream.
The term "W/O emulsion" or "water-in-oil emulsion" means any macroscopically homogeneous composition comprising a continuous fatty or oily phase and aqueous or water phases in the form of droplets dispersed in the said fatty or oily phase. The term "O/W emulsion" or "oil-in-water emulsion" means any macroscopically homogeneous composition comprising a continuous aqueous or water phase and fetty or oily phases in the form of droplets dispersed in the aqueous or water phase.
The aqueous phase may be thickened, because the (b) associative polymer can function as a thickener. It is preferable that the composition according to the present invention be in the form of an O/W gel emulsion.
The O/W architecture or structure, which consists of fetty phases dispersed in an aqueous phase, has an external aqueous phase, and therefore, the composition according to the present invention with the O/W architecture or structure can provide a pleasant feeling during use because of the feeling of immediate freshness that the aqueous phase can provide.
[Process and Use]
It is preferable that the composition according to the present invention be a cosmetic composition, and more preferably a cosmetic composition for a keratinous substance such as skin.
The composition according to the present invention can be used for a nan-therapeutic process, such as a cosmetic process, for treating a keratinous substance such as skin, hair, mucous membranes, nails, eyelashes, eyebrows and/or scalp, by being applied to the keratinous substance.
Thus, the present invention also relates to a cosmetic process for treating a keratinous substance, preferably skin, comprising the step of applying the composition according to the present invention to the keratinous substance.
The present invention may also relate to a use of the composition according to the present invention as a cosmetic topical product or in a cosmetic topical product such as care products, for body and/or facial skin and/or mucous membranes and/or the scalp and/or the hair and/or the nails and/or the eyelashes and/or the eyebrows.
In other words, the composition according to the present invention can be used, as it is, as a cosmetic topical product Alternatively, the composition according to the present invention can be used as an element of a cosmetic topical product For example the composition according to the present invention can be added to or combined with any other elements to form a cosmetic product
The care product may be a lotion, a cream, and the like.
It is preferable that the composition according to the present invention be used as a sunscreen, because it includes the (a) at least one UV filter.
Thus, the present invention may also relate to a use of a combination of
(b) at least one associative polymer comprising one or more acrylic and/or methacrylic units;
(c) at least one polyglyceryl fetty acid ester; and
(d) at least one organic filler, in order to provide the composition comprising (a) at least one UV filter with increased viscosity, improved light and fresh sensation, and/or reduced oiliness/greasiness feelings.
According a preferred embodiment, the composition according to the invention comprises relative to the total weight of the composition:
(a) from 3% to 30% by weight of at least one UV filter comprising at least one organic UV filter and at least one inorganic UV filter; wherein the organic UV filter may be selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoyhnethane compounds, such as butyl methoxydibenzoyhnethane; bis-resorcinyl triazine coirpounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole conpounds, such as drometrizole trisiloxane, and mixtures thereof, and/or the inorganic UV filter may be selected from metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof:
(b) from 0.1 % to 5% by weight of at least one associative polymer comprising one or more one or more (meth)aciylic acid (C1-C12) alkyl ester units;
(c) from 0.1% to 3% by weight of at least one polyglyceryl fatty acid ester having a polyglyceryl moiety derived from 2 to 10 glycerins, preferably 2 to 8 glycerins, and more preferably from 2 to 6 glycerins; and
(d) from 0.1% to 10% by weight of at least one organic filler selected from polysaccharides.
According a preferred embodiment, the composition according to the invention comprises relative to the total weight of the composition:
(a) from 10% to 20% by weight of at least one UV filter comprising at least one organic UV filter and at least one inorganic UV filter; wherein the organic UV filter may be selected from aminobenzophenone conpounds, such as diethyiamino hydroxybenzoyl hexyl benzoate (DHHB); triazine conpounds, such as ethylhexyl triazone; dibenzoyhnethane compounds, such as butyl methoxydibenzoylmethane; bis-resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof; and/or the inorganic UV filter may be selected from metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof:
(b) from 0.5% to 1% by weight of at least one associative polymer comprising one or more one or more (meth)acrylic acid (C1-C12) alkyl ester units, and comprising one or more units derived from polyoxyalkylenated fatty alcohols;
(c) from 0.5% to 1% by weight of at least two polyglyceryl fatty acid ester having a polyglyceryl moiety derived from 2 to 10 glycerins, preferably 2 to 8 glycerins, and more preferably from 2 to 6 glycerins; and
(d) from 0.5% to 1% by weight of at least one organic filler selected from polysaccharides, preferably from starches, and in particular from com (zea mays) starches.
According a preferred embodiment, the composition according to the invention comprises relative to the total weight of the composition:
(a) from 3% to 30% by weight of at least one UV filter comprising at least one organic UV filter in an amount of 2.5% to 25% by weight and at least one inorganic UV filter in an amount of 0.5% to 15% by weight, wherein the organic UV filter may be selected from aminobenzophenone conpounds, such as diethyiamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoyhnethane compounds, such as butyl methoxydibenzoyhnethane; bis- resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof, and/or the inorganic UV filter may be selected from metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof
(b) from 0.1% to 5% by weight of at least one associative polymer comprising one or more one or more (meth)acrylic acid (C1-C12) alkyl ester units;
(c) fiom 0.1% to 3% by weight of at least one polyglyceryl fatty acid ester having a polyglyceryl moiety derived from 2 to 10 glycerins, preferably 2 to 8 glycerins, and more preferably from 2 to 6 glycerins; and
(d) from 0.1% to 10% by weight of at least one organic filler selected from polysaccharides.
According a preferred embodiment, the composition according to the invention comprises relative to the total weight of the composition:
(a) from 10% to 20% by weight of at least one UV filter comprising at least one organic UV filter in an amount of 7.5% to 15% by weight and at least one inorganic UV filter in an amount of 1.5% to 5% by weight, wherein the organic UV filter may be selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoylmethane compounds, such as butyl methoxydibenzoylmethane; bis- resorcinyl triazine compounds, such as bis-ethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole compounds, such as drometrizole trisiloxane, and mixtures thereof; and/or the inorganic UV filter may be selected fiom metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof:
(b) fiom 0.5% to 1% by weight of at least one associative polymer comprising one or more one or more (meth)acrylic acid (C1-C12) alkyl ester units, and comprising one or more units derived fiom polyoxyalkylenated fatty alcohols;
(c) fiom 0.5% to 1% by weight of at least two polyglyceryl fatty acid ester having a polyglyceryl moiety derived fiom 2 to 10 glycerins, preferably 2 to 8 glycerins, and more preferably fiom 2 to 6 glycerins; and
(d) fiom 0.5% to 1% by weight of at least one organic filler selected fiom polysaccharides, preferably from starches, and in particular fiom com (zea mays) starches.
EXAMPLES
The present invention will be described in more detail by way of examples, which however should not be construed as limiting the scope of the present invention.
[Preparation]
Each of the O/W emulsion compositions according to Example 1 (Ex. 1) and Comparative Examples 1 to 4 (Comp. Ex. 1 to Comp. Ex. 4) was prepared by mixing tire ingredients shown in Table 1 with a homo-mixier as follows:
(1) mixing the ingredients in the rows of A in Table 1 at 70°C to form a uniform, transparent mixture of Phase A;
(2) adding the ingredients in the rows of B in Table 1 to the mixture of Phases A, followed by homogenizing them for 10 minutes to obtain a uniform mixture (Phases A and B);
(3) adding the ingredients in the rows of C in Table 1 to the mixture of Phases A and B, followed by homogenizing them for 10 minutes to obtain a uniform mixture (Phases A, B and C), and cooling the obtained mixture to a room temperature (25°C);
(4) adding the ingredients in the row of D in Table 1 to the mixture of Phases A, B, and C, followed by homogenizing them for 10 minutes to obtain a uniform mixture (Phases A, B, C, and D);
(5) adding the ingredient in the row of E and F in Table 1 to the mixture of Phases A, B, C, and D, followed by homogenizing them for 5 minutes to obtain a uniform mixture (Phases A, B, C, D, E, and F).
The numerical values in parentheses in titanium dioxide and silica indicate average particle size of the powder ingredients. Titanium dioxide was used as an inorganic UV filter. Silica was used as an inorganic particle. The mean (primary) particle diameter of Zea Mays (Com) Starch was around 10 μm. The numerical values for the amounts of the ingredients are all based on "% by weight” as active raw materials.
[Evaluations]
(Viscosity)
The viscosity of each of the compositions according to Example 1 and Comparative Examples 1-4 was measured at a room temperature (25°C) with a B-type viscometer under the conditions of rotor: No. 4, rotation speed: 6 rpm, and measurement time: 1 minute.
(Light and Fresh Sensation)
Five professional panelists evaluated tire “light and fresh sensation” after application of the compositions according to Example 1 and Comparative Examples 1-4. Each panelist took each composition and applied it onto their feces to evaluate the light and fresh sensation after application, and scored it based on the following 3 criteria, and then an average score was calculated.
3: Very light fresh texture
2: Slightly light fresh texture 1 : Not light fresh texture
(Non-Oily/Greasy Feeling)
Five professional panelists evaluated the “non-oily/greasy feeling” after application of the compositions according to Example 1 and Comparative Examples 1 -4. Each panelist took each composition and applied it onto their faces to evaluate the non-oily/greasy feeling after application, and scored it based on the following 3 criteria, and then an average score was calculated.
3: No greasy texture at all 2: Less greasy texture 1: Greasy texture
(Stability)
Each of the compositions according to Example 1 and Comparative Examples 1-4 was filled into a glass bottle and was held under temperature at 45°C for 2 months. Each sample was then investigated for the degree of phase separation and evaluated in accordance with the following criteria.
3: No phase separation was observed. 2: The phase was slightly separated. 1 : The phase was clearly separated.
The results are shown in Table 1. Table 1 p LroEpSy
Figure imgf000037_0001
* 1 : sold by BASF under the 30% of active material)
As is clear from Table 1, the composition in the form of an O/W emulsion according to the present invention (Example 1), Which comprises a combination of the ingredients (a) to (d), was able to provide excellent cosmetic effects in terms of light and fresh sensation and non-oily/greasy feeling aspects as well as stability. Thus, the composition according to the present invention can provide, in particular, an excellent feeling to the touch and stability for a long time period even under temperature changes.
On the other hand, the compositions according to Comparative Example 1, which did not include the ingredient (d) (the organic filler), showed inferior cosmetic effects of light and fresh sensation and non-oily/greasy feeling aspect
The composition according to Comparative Example 2, which did not include the ingredient (b) (associative polymer comprising one or more acrylic and/or methacrylic units), could not be thickened well, and showed inferior stability and exhibited greasy texture.
The compositions according to Comparative Example 3 and 4, which did not include the ingredient (c) (the polyglyceryl fatty acid ester) could not show sufficient stability and could not exhibit allowable reduced greasy texture.

Claims

1. A coirposition, preferably a cosmetic composition, and more preferably a skin cosmetic composition, comprising:
(a) at least one UV filter,
(b) at least one associative polymer comprising one or more acrylic and/or methacrylic units;
(c) at least one polyglyceryl fally add ester, and
(d) at least one organic filler.
2. The composition according to Claim 1, wherein the (a) UV filter comprises at least one organic UV filter and at least one inorganic UV filter.
3. The composition according to Claim 2, wherein the organic UV filter is selected from aminobenzophenone compounds, such as diethylamino hydroxybenzoyl hexyl benzoate (DHHB); triazine compounds, such as ethylhexyl triazone; dibenzoylmethane compounds, such as butyl metboxydibenzoylmethane; bis-resorcinyl triazine compounds, such as bisethylhexyloxyphenol methoxyphenyl triazine; and benzotriazole canpounds, such as drometrizole trisiloxane, and mixtures thereof, and/or the inorganic UV filler is selected from metal oxides, such as, titanium dioxide, iron oxide, zinc oxide, zirconium oxide, cerium oxide, and mixtures thereof.
4. The composition according to Claim 2, wherein the amount of the organic UV filters) in the composition ranges from 25% to 25% by weight, preferably from 5% to 20% by weight, and more preferably from 7.5% to 15% by weight, relative to the total weight of the composition.
5. The composition according to Claim 2, wherein the amount of the inorganic UV filters) in the composition ranges from 0.5% to 15% by weight, preferably from 1% to 10% by weight, and more preferably from 1.5% to 5% by weight, relative to the total weight of the composition.
6. The composition according to any one of Claim 1 to 5, wherein the (b) associative polymer comprises one or more (meth)acrylic acid (C1-C12) alkyl ester units.
7. The composition according to any one of Claim 1 to 6, wherein the (b) associative polymer comprises one or more units derived from polyoxyalkylenated fatty alcohols.
8. The composition according to any one of Claims 1 to 7, wherein the amount of the (b) associative polymer(s) in the composition ranges from 0.1% to 5% by weight, preferably from 0.3% to 3% by weight, and more preferably from 0.5% to 1% by weight relative to the total weight of the composition.
9. The composition according to any one of Claims 1 to 8, wherein the (c) polyglyceryl fetty add ester has a polyglyceryl moiety derived from 2 to 10 glycerins, preferably 2 to 8 glycerins, and more preferably from 2 to 6 glycerins.
10. The composition according to any one of Claims 1 to 9, wherein the (c) polyglyceryl fetty acid ester comprises two or more types of the polyglyceryl fatty acid esters.
11. The composition according to any one of Claims 1 to 10, wherein the amount of the (c) polyglyceryl fetty acid ester(s) in the composition ranges from 0.1% to 3% by weight, preferably from 0.3% to 2% by weight, and more preferably from 0.5% to 1% by weight relative to the total weight of the composition.
12. The composition according to any one of Claims 1 to 11, wherein the (d) organic filler is selected from polysaccharides, preferably from starches, and in particular from com (zea mays) starches.
13. The composition according to any one of Claims 1 to 11, wherein the amount of the (d) organic fillers) in the composition ranges from 0.1% to 10% by weight, preferably from 1% to 7% by weight, and more preferably from 2% to 5% by weight relative to the total weight of the composition.
14. The composition according to any one of Claims 1 to 14, wherein the composition is in the form of emulsion, preferably O/W emulsion.
15. A cosmetic process for treating a keratin substance, comprising the step of applying the composition according to any one of Claims 1 to 14 to the keratinous substance.
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