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WO2022172799A1 - Produit cosmétique en émulsion huile dans l'eau - Google Patents

Produit cosmétique en émulsion huile dans l'eau Download PDF

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Publication number
WO2022172799A1
WO2022172799A1 PCT/JP2022/003630 JP2022003630W WO2022172799A1 WO 2022172799 A1 WO2022172799 A1 WO 2022172799A1 JP 2022003630 W JP2022003630 W JP 2022003630W WO 2022172799 A1 WO2022172799 A1 WO 2022172799A1
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Prior art keywords
mass
cosmetic
oil
content
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English (en)
Japanese (ja)
Inventor
紗希 鎌田
翼 永井
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Shiseido Co Ltd
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Shiseido Co Ltd
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Priority to CN202280009506.1A priority Critical patent/CN116940334A/zh
Publication of WO2022172799A1 publication Critical patent/WO2022172799A1/fr
Anticipated expiration legal-status Critical
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/06—Emulsions
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/29—Titanium; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/81—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds obtained by reactions involving only carbon-to-carbon unsaturated bonds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q17/00—Barrier 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
    • A61Q17/04—Topical preparations for affording protection against sunlight or other radiation; Topical sun tanning preparations

Definitions

  • the present invention relates to an oil-in-water emulsified cosmetic, particularly an infrared protective oil-in-water emulsified cosmetic.
  • UV protection cosmetics are known from the viewpoint of skin protection against sunlight.
  • Patent Document 1 as an oil-in-water emulsified cosmetic containing an ultraviolet absorber and an ultraviolet scattering agent and having a high ultraviolet protection function (SPF) and a unique fresh feeling in use, (A) 0.05 to (B) 5 to 40% by weight of oil; (C) 2.5 to 30% by weight of an ultraviolet scattering agent having a hydrophobic surface; and (D) an aqueous phase with low salt resistance.
  • an oil-in-water emulsified cosmetic comprising a thickener and (C) an ultraviolet scattering agent dispersed in an oil phase.
  • titanium oxide (A) with an average particle size of 5 to 100 nm and titanium oxide with an average particle size of 300 to 3000 nm are disclosed as heat-shielding cosmetics that improve the heat-shielding effect of infrared rays while having an ultraviolet-shielding effect.
  • the heat-shielding cosmetic disclosed in Patent Document 2 has a problem that it is difficult to obtain a fresh feeling in use because the nonionic surfactant is contained in a large amount.
  • the present invention is intended to improve the above circumstances, and the purpose thereof is to provide a cosmetic that has an excellent infrared shielding effect and a unique fresh feeling when used.
  • ⁇ Aspect 1> Contains ingredients (a)-(d): (a) metal oxide particles having an average particle size of 500 to 1500 nm and having a surface hydrophobically treated; (b) a hydrophobically modified alkyl cellulose, (c) an aqueous phase thickener, and (d) an oil, The metal oxide particles are dispersed in the oil, and the content of the nonionic surfactant having an HLB value of 10 or more is less than 1.0% by mass. Oil-in-water emulsified cosmetic. ⁇ Aspect 2> (e) The cosmetic according to aspect 1, further comprising polyhydroxystearic acid.
  • ⁇ Aspect 3> The content of the metal oxide particles is 1.0% by mass or more and 30.0% by mass or less, The content of the hydrophobically-modified alkyl cellulose is 0.05% by mass or more and 1.0% by mass or less, The content of the aqueous phase thickener is 0.05 mass% or more and 3.0 mass% or less, and the oil content is 5.0 mass% or more and 40.0 mass% or less.
  • ⁇ Aspect 6> The cosmetic according to any one of aspects 1 to 5, wherein the aqueous phase thickener comprises a vinyl polymer or an acrylic polymer.
  • ⁇ Aspect 7> 7. The cosmetic according to any one of aspects 1 to 6, wherein 55% by mass or more of the oil content is polar oil.
  • ⁇ Aspect 8> (f) The cosmetic according to any one of aspects 1 to 7, further comprising an ionic surfactant.
  • ⁇ Aspect 9> (g) The cosmetic according to any one of aspects 1 to 8, further comprising a water-soluble polyether-modified silicone wax.
  • ⁇ Aspect 10> The cosmetic according to any one of aspects 1 to 9, which is an infrared protective cosmetic.
  • the present invention it is possible to provide a cosmetic that has an excellent infrared shielding effect and a unique fresh feeling in use.
  • the “unique fresh feeling in use” means that when the cosmetic is applied to the skin with a finger or the like, the viscosity of the cosmetic suddenly drops and the skin collapses. It means to give a fresh feel to the skin.
  • the oil-in-water emulsified cosmetic of the present invention (hereinafter also simply referred to as "the cosmetic of the present invention") is Contains ingredients (a)-(d): (a) metal oxide particles having an average particle size of 500 to 1500 nm and having a surface hydrophobically treated; (b) a hydrophobically modified alkyl cellulose, (c) an aqueous phase thickener, and (d) an oil,
  • the metal oxide particles are dispersed in the oil, and the content of the nonionic surfactant having an HLB value of 10 or more is less than 1.0% by mass.
  • the cosmetic of the present invention exhibits the effect of the present invention by containing a specific component and by suppressing the content of a nonionic surfactant having an HLB value of 10 or more to less than 1.0% by mass. That is, it can have excellent infrared protection effect and a unique fresh feeling in use.
  • Patent Document 1 The cosmetic material of Patent Document 1 mentioned above is mainly intended to block ultraviolet rays, and uses an ultraviolet scattering agent with a relatively small average particle size. Therefore, in Patent Document 1, instead of using a nonionic surfactant with a strong emulsifying action, a hydrophobically modified alkylcellulose with a relatively weak emulsifying action is used, and an ultraviolet scattering agent with a relatively small average particle size is contained. It is disclosed that an oil-in-water emulsified cosmetic in which a hydrophobic powder is dispersed in the inner oil phase is obtained by emulsifying the oil contained in the oil.
  • Patent Document 2 discloses that a large amount of nonionic surfactant having a content of 1% by mass or more is used as an emulsifier to obtain an oil-in-water emulsified cosmetic in which a hydrophobic powder is dispersed in an internal oil phase. ing.
  • a stable interfacial film can be formed when a surfactant with a strong emulsifying action (that is, a nonionic surfactant with an HLB value of 10 or more) is used.
  • a surfactant with a strong emulsifying action that is, a nonionic surfactant with an HLB value of 10 or more
  • the size of the emulsion particles is relatively small. Therefore, metal oxide particles having a relatively large average particle size are relatively close in size to the emulsified particles, and are likely to be easily detached from the emulsified particles (oil droplets).
  • emulsified particles become relatively large by using a surfactant with relatively weak emulsifying action such as hydrophobically modified alkyl cellulose. Therefore, in this case, it is considered that the metal oxide particles having a relatively large average particle size are difficult to detach from the emulsified particles.
  • the emulsified particle size is not made smaller than desired, and a stable internal surfactant is obtained. It is possible to not only obtain an oil-in-water emulsified cosmetic in which hydrophobic powder is dispersed in an oil phase, but also to suppress the sticky feeling in use caused by a large amount of nonionic surfactant, thereby obtaining a unique fresh feeling in use. I was able to
  • the content of the nonionic surfactant having an HLB value of 10 or more is 0.9% by mass or less, 0.8% by mass or less, 0.7% by mass or less, and 0.6% by mass. 0.5% by mass or less, 0.4% by mass or less, 0.3% by mass or less, 0.2% by mass or less, 0.1% by mass or less, or 0% by mass or less.
  • the metal oxide particles contained in the cosmetic of the present invention (hereinafter also simply referred to as “the metal oxide particles of the present invention") have an average particle size of 500 to 1500 nm and are surface-hydrophobicized metal oxide particles. is.
  • the metal oxide particles of the present invention have an average particle size of 500 to 1500 nm, they have the function of protecting against infrared rays, especially near infrared rays.
  • average particle size refers to the average particle size of primary particles.
  • the average particle diameter can be calculated as the projected area circle equivalent diameter of the primary particles observed by SEM or TEM.
  • the metal oxide particles of the present invention are surface-hydrophobicized.
  • the hydrophobization treatment may be performed using a known surface treatment agent that is hydrophobized. Examples include fluorine compound treatment, silicone treatment, silicone resin treatment, pendant treatment, silane coupling agent treatment, and titanium coupling. agent treatment, oil treatment, N-acylated lysine treatment, polyacrylic acid treatment, isostearic acid treatment, metallic soap treatment, amino acid treatment, inorganic compound treatment, plasma treatment, mechanochemical treatment, silane compound treatment, silazane compound treatment, etc. be done. Among these treatments, treatment with silicone or silicone resin, treatment with a silane compound or silazane compound, and isostearic acid treatment are preferred from the viewpoint of dispersion stability and the like.
  • the metal oxide particles of the present invention may be surface-hydrophobicized titanium oxide, surface-hydrophobicized zinc oxide, surface-hydrophobicized cerium oxide, or mixtures thereof, etc., but have a shielding effect in the infrared region. From the viewpoint of improving the surface resistance, it is preferable to use titanium oxide that has been surface-hydrophobicized.
  • the shape of the metal oxide particles of the present invention is not particularly limited, and examples thereof include spherical, plate-like, rod-like, spindle-like, needle-like, and irregular shapes.
  • metal oxide particles of the present invention commercially available ones may be used.
  • metal oxide particles of the present invention commercially available products in which metal oxide particles are dispersed with a dispersant such as polyhydroxystearic acid may be used.
  • the content of the metal oxide particles is not particularly limited. 3.0% by mass or more, 3.5% by mass or more, 4.0% by mass or more, 4.5% by mass or more, 5.0% by mass or more, 5.5% by mass or more, 6.0% by mass or more, 6 .5% by mass or more, 7.0% by mass or more, 7.5% by mass or more, 8.0% by mass or more, 8.5% by mass or more, 9.0% by mass or more, 9.5% by mass or more, or 10 0% by mass or more, or 30.0% by mass or less, 20.0% by mass or less, or 10.0% by mass or less.
  • the content of the metal oxide particles referred to here is the content of the solid content in the cosmetic of the present invention. point to
  • hydrophobically modified alkyl cellulose contained in the cosmetic of the present invention does not belong to "nonionic surfactants having an HLB value of 10 or more", and is usually classified as “polymeric surfactants”.
  • hydrophobically modified alkyl cellulose refers to alkyl cellulose that has been hydrophobically modified with an alkyl group having 14 to 22 carbon atoms.
  • This hydrophobically modified alkylcellulose is a compound obtained by introducing a long-chain alkyl group, which is a hydrophobic group, into a water-soluble cellulose ether derivative, and is represented by the following general formula (I).
  • R may be the same or different, and is a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, or a group -[CH 2 CH(CH 3 )O] m -H (wherein m is an integer of 1 to 5, preferably 1 to 3), the group —CH 2 CH 2 OH, and the group —CH 2 CH(OH)CH 2 OR′, where R′ is an integer having the number of carbon atoms 14 to 22 alkyl groups), but necessarily including the group —CH 2 CH(OH)CH 2 OR′.
  • A is a group —(CH 2 ) q — (q is an integer of 1 to 3, preferably 1); n is an integer of 100 to 10,000, preferably 500 to 5,000; is. ]
  • the method for producing the hydrophobically modified alkyl cellulose of the formula (I) is generally based on a water-soluble cellulose ether derivative, specifically methyl cellulose (where R is a hydrogen atom or a methyl group), ethyl cellulose (where R is a hydrogen atom or ethyl group), propyl cellulose (R is a hydrogen atom or a propyl group), butyl cellulose (R is a hydrogen atom or a butyl group), hydroxypropyl cellulose [R is a hydrogen atom or a hydroxypropyl group (the group -[CH 2 CH (CH 3 ) O] m —H (wherein m is an integer of 1 to 5, preferably 1 to 3))], hydroxypropylmethylcellulose (R is a hydrogen atom, a methyl group, or a hydroxypropyl group (same as above)) etc., can be obtained by contacting a compound for introducing a long-chain alkyl group having 14
  • R′ is an alkyl group having 14 to 22 carbon atoms.
  • the content of the group —CH 2 CH(OH)CH 2 OR′ introduced into the hydrophobically-modified alkylcellulose of the present invention is preferably about 0.1 to 5.0% by mass relative to the entire hydrophobically-modified alkylcellulose. .
  • the molar ratio, reaction time, type of alkali catalyst, etc. during the reaction between the water-soluble cellulose ester derivative and the long-chain alkyl glycidyl ether may be appropriately selected for production.
  • purification steps such as neutralization, filtration, washing, drying, and sieving of the reaction product may be performed.
  • hydroxypropylmethylcellulose (wherein R in formula (I) is a hydrogen atom, a methyl group, or a group -[CH 2 CH ( CH 3 )O] m H and the group —CH 2 CH(OH)CH 2 OR′, q of the group A becomes 1, and the A becomes a methylene group).
  • R' in the long-chain alkyl glycidyl ether of formula (II) is an alkyl group having 14 to 22 carbon atoms, preferably an alkyl group having 14 to 20 carbon atoms, more preferably a stearyl group having 18 carbon atoms (-C 18 H37 ). If the number of carbon atoms in the alkyl group R' is less than 14 or 23 or more, the emulsion stability of the obtained hydrophobically modified alkyl cellulose is not sufficient.
  • the weight average molecular weight of the hydrophobically modified alkyl cellulose is preferably 100,000 to 1000,000, more preferably 300,000 to 800,000, still more preferably 550,000 to 750,000.
  • hydrophobically modified alkylcellulose it is preferable to use hydrophobically modified hydroxypropylmethylcellulose (hydrophobicized hydroxypropylmethylcellulose), more specifically, stearoxyhydroxypropylcellulose.
  • hydrophobically modified alkyl cellulose such as Sangelose 90L (display name: hydrophobized hydroxypropyl methylcellulose; manufactured by Daido Kasei Co., Ltd.), Natrosol Plus 330cs (manufactured by Ashland), Examples include Polysurf 67cs (manufactured by Ashland), but are not limited to these.
  • the content of the hydrophobically-modified alkyl cellulose is not particularly limited, and is 0.25% by mass or more, 0.30% by mass or more, 0.35% by mass or more, 0.40% by mass or more, 0.45% by mass or more, or 0.50% by mass or more, and 1 0% by mass or less, 0.80% by mass or less, 0.50% by mass or less, or 0.30% by mass or less.
  • the water-phase thickener contained in the cosmetic of the present invention is a thickener having a function of thickening the water phase. may be generated. Further, in the present invention, such an aqueous phase thickener that causes a decrease in viscosity due to an increase in electrolyte concentration is also referred to as an "aqueous phase thickener with low salt resistance". Such a thickener with low salt tolerance is selected from water-soluble thickeners conventionally blended in cosmetics and the like for the purpose of adjusting the viscosity of the aqueous phase.
  • polyvinyl alcohol polyvinyl acetate, polyvinyl methyl ether, polyvinylpyrrolidone, copolymers of vinylpyrrolidone and vinyl acetate, vinyl polymers such as carboxyvinyl polymer; sodium polyacrylate, polyethyl acrylate, and polyalkanol acrylate.
  • Amine, copolymer of alkyl methacrylate and dimethylaminoethyl methacrylate, poly 2-acrylamido-2-methylpropanesulfonic acid, polymethacryloyloxytrimethylammonium, (acryloyldimethyltaurate ammonium/VP) copolymer, dimethylacrylamide/acryloyldimethyltaurate Na) cross Examples include, but are not limited to, acrylic macromolecules such as polymers.
  • thickeners with low salt tolerance compared to thickeners that thicken by entanglement of polymer chains, they form water-swellable microgels in the aqueous phase, and the swollen microgel particles
  • a type of thickening agent that thickens due to friction because it can further suppress sliminess when the cosmetic is applied to the skin.
  • the hydrophobically modified alkyl cellulose blended as an emulsifier also has a thickening effect due to the entanglement of polymer chains, so if a thickener that thickens by the same mechanism is further blended, the thickening effect is promoted. This is because it can cause sliminess.
  • the content of the aqueous phase thickener is not particularly limited, and is, for example, 0.05% by mass or more, 0.07% by mass or more, 0.10% by mass or more, 0.15% by mass or more. , 0.17% by mass or more, 0.20% by mass or more, 0.25% by mass or more, 0.27% by mass or more, 0.275% by mass or more, 0.30% by mass or more, 0.35% by mass or more, 0.37% by mass or more, 0.40% by mass or more, 0.45% by mass or more, 0.47% by mass or more, or 0.50% by mass or more, and 3.0% by mass or less, 2 0% by mass or less, or 1.0% by mass or less.
  • the oil contained in the cosmetic of the present invention can be one or more selected from oily components commonly used in cosmetics and the like.
  • the content of oil in the cosmetic of the present invention is not particularly limited, and is % by mass or more, 10.0% by mass or more, 11.0% by mass or more, 12.0% by mass or more, 13.0% by mass or more, 14.0% by mass or more, 15.0% by mass or more, or 16.0% by mass It may be 40.0% by mass or less, 30.0% by mass or less, or 20.0% by mass or less.
  • the oil contains polar oil.
  • polar oil accounts for 55% by mass or more, preferably 60% by mass or more, more preferably 70% by mass or more, and even more preferably 80% by mass or more, the emulsion stability is improved. can be further improved.
  • the upper limit of the ratio of the polar oil to the oil content is not particularly limited.
  • the "polar oil” is not particularly limited as long as it has a high polarity among oils generally used in cosmetics.
  • the dielectric constant is about 5 or more, preferably about 10 or more is preferably used.
  • polar oils include ester oils and UV absorbers.
  • polar oil since it contains a larger amount of polar oil than conventional cosmetics, it is possible to stably incorporate, for example, a highly polar perfume.
  • ester oils that can be used as polar oils in the present invention include tripropylene glycol dineopentanoate, isononyl isononanoate, isopropyl myristate, cetyl octanoate, octyldodecyl myristate, isopropyl palmitate, butyl stearate, and laurin.
  • UV absorbers that can be used as polar oils in the present invention include benzoic acid derivatives, salicylic acid derivatives, cinnamic acid derivatives, dibenzoylmethane derivatives, ⁇ , ⁇ -diphenylacrylate derivatives, benzophenone derivatives, and benzylidene camphor. derivatives, phenylbenzimidazole derivatives, triazine derivatives, phenylbenzotriazole derivatives, anthranyl derivatives, imidazoline derivatives, benzalmalonate derivatives, 4,4-diarylbutadiene derivatives and the like, but are not limited thereto. In addition, some specific examples and trade names of these will be exemplified below.
  • benzoic acid derivatives include ethyl para-aminobenzoate (PABA), ethyl-dihydroxypropyl PABA, ethylhexyl-dimethyl PABA (eg "Escarol 507"; manufactured by ISP), glyceryl PABA, PEG-25-PABA (eg "Uvinal P25”; manufactured by BASF), and hexyl diethylaminohydroxybenzoylbenzoate (eg, "Uvinal A Plus”), etc., but not limited thereto.
  • PABA ethyl para-aminobenzoate
  • Escarol 507 ethyl-dihydroxypropyl PABA
  • ethylhexyl-dimethyl PABA eg "Escarol 507”
  • glyceryl PABA eg "Uvinal P25”; manufactured by BASF
  • hexyl diethylaminohydroxybenzoylbenzoate
  • salicylic acid derivatives include homosalate (“Eusolex HMS”; manufactured by Rona/EM Industries), ethylhexyl salicylate (for example, “NeoHeliopan OS”; manufactured by Harman & Reimer), Examples include, but are not limited to, propylene glycol salicylate (e.g., "Dipsal”; manufactured by Skell) and TEA salicylate (e.g., "Neo Heliopan TS”; manufactured by Harman & Reimer).
  • cinnamic acid derivatives examples include ethylhexyl methoxycinnamate (e.g., "Parsol MCX”; manufactured by Hoffmann-La Roche), isopropyl methoxycinnamate, and isoamyl methoxycinnamate (e.g., "Neo Heliopan E1000”; Harman & ⁇ Laymer), cinnoxate, DEA methoxycinnamate, diisopropyl methylcinnamate, glyceryl-ethylhexanoate-dimethoxycinnamate, and di-(2-ethylhexyl)-4'-methoxybenzalmalonate. but not limited to these.
  • ethylhexyl methoxycinnamate e.g., "Parsol MCX”; manufactured by Hoffmann-La Roche
  • isopropyl methoxycinnamate e.g., "Neo Heliopan E
  • Dibenzoylmethane derivatives include, but are not limited to, 4-tert-butyl-4'-methoxydibenzoylmethane (eg, "Parsol 1789").
  • ⁇ , ⁇ -diphenyl acrylate derivative examples include, but are not limited to, octocrylene (eg, "Ubinal N539"; manufactured by BASF).
  • Benzophenone derivatives include benzophenone-1 (eg "Uvinal 400"; manufactured by BASF), benzophenone-2 (eg “Ubinal D50”; manufactured by BASF), benzophenone-3 or oxybenzone (eg "Ubinal M40"; manufactured by BASF).
  • benzophenone-4 eg “Ubinal MS40”; manufactured by BASF
  • benzophenone-5 benzophenone-6 (eg “Helisorb 11”; Norquai)
  • benzophenone-8 eg “Spectra-sorb (Spectra- Sorb) UV-24”; manufactured by American Cyanamid
  • benzophenone-9 eg, "Ubinal DS-49"; manufactured by BASF
  • benzophenone-12 etc., but are not limited thereto.
  • benzylidene camphor derivatives include 3-benzylidene camphor (eg, "Mexoryl SD”; manufactured by Simex), 4-methylbenzylidene camphor, benzylidene camphor sulfonic acid (eg, "Megizolyl SL”; manufactured by Simex), methosulfate camphor.
  • benzalkonium e.g., "Megizolyl SO”; manufactured by Simex
  • terephthalylidene dicamphor sulfonic acid e.g, "Megizolyl SX”; manufactured by Simex
  • polyacrylamidemethylbenzylidene camphor e.g, "Megizolyl SW”; manufactured by Simex
  • Phenylbenzimidazole derivatives include phenylbenzimidazole sulfonic acid (e.g. "Usolex 232"; manufactured by Merck) and disodium phenyldibenzimidazole tetrasulfonate (e.g. "Neo Heliopan AP”; manufactured by Harman & Reimer). ) and the like, but are not limited to these.
  • triazine derivatives examples include anisotriazine (e.g., "Tinosorb S”; manufactured by Ciba Specialty Chemicals), ethylhexyl triazone (e.g., "Ubinal T150”; manufactured by BASF), and diethihexylbutamide triazone ( Examples thereof include, but are not limited to, “Uvasorb HEB” (manufactured by Sigma 3V) and 2,4,6-tris(diisobutyl-4'-aminobenzalmalonate)-s-triazine.
  • anisotriazine e.g., "Tinosorb S”; manufactured by Ciba Specialty Chemicals
  • ethylhexyl triazone e.g., "Ubinal T150”; manufactured by BASF
  • diethihexylbutamide triazone examples thereof include, but are not limited to, “Uvasorb HEB” (manufactured by Sigma 3V) and
  • Phenylbenzotriazole derivatives include drometrizole trisiloxane (e.g. "Silatrizole”; manufactured by Rhodia Shimmy) and methylenebis(benzotriazolyltetramethylbutylphenol) (e.g. "Tinosorb M” (Ciba Specialties). (Tea Chemicals Co., Ltd.)), etc., but are not limited to these.
  • anthranil derivatives include, but are not limited to, menthyl anthranilate (eg, "Neo Heliopan MA”; manufactured by Harman & Reimer).
  • imidazoline derivatives include, but are not limited to, ethylhexyldimethoxybenzylidene dioxoimidazoline propionate.
  • benzalmalonate derivatives include, but are not limited to, polyorganosiloxanes having benzalmalonate functional groups (for example, polysilicone-15; "Parsol SLX”; manufactured by DSM Nutrition Japan).
  • 4,4-diarylbutadiene derivatives include, but are not limited to, 1,1-dicarboxy(2,2'-dimethylpropyl)-4,4-diphenylbutadiene and the like.
  • the cosmetic of the present invention may further contain other components within a range that does not impair the effects of the present invention.
  • Other components are exemplified below.
  • the cosmetic of the present invention may further contain polyhydroxystearic acid.
  • Polyhydroxystearic acid is preferable from the viewpoint of having the effect of uniformly dispersing the metal oxide particles of the present invention in oil.
  • Polyhydroxystearic acid is an oligomerized compound obtained by forming an ester bond with hydroxystearic acid. (manufactured by Sei Oillio Co., Ltd.), etc., and these can be used.
  • the degree of polymerization of polyhydroxystearic acid is not particularly limited, and may be, for example, 4-8.
  • the content of polyhydroxystearic acid is, for example, 0.01 to 3.0% by mass, 0.05 to 2.0% by mass, or 0.10 to 3.0% by mass. It may be 1.0% by mass.
  • the cosmetic of the present invention may further contain an ionic surfactant.
  • Ionic surfactants are preferable from the viewpoint of electrostatic repulsion and prevention of coalescence of emulsified particles.
  • Ionic surfactants are surfactants that dissociate into ions when dissolved in water, and are specifically classified into anionic surfactants, cationic surfactants, and amphoteric surfactants.
  • ionic surfactants include N-stearoyl-N-methyltaurine, sodium N-stearoyl-N-methyltaurate, disodium N-stearoyl-L-glutamate, sodium N-stearoyl-L-glutamate, and polyoxyethylene lauryl ether.
  • Anionic surfactants such as sodium acetate, polyoxyethylene lauryl ether triethanolamine acetate, sodium taurate laurate, sodium lauroylmethyltaurate, and triethanolamine laurate; cationic surfactants such as stearyldimethylamine oxide and stearyltrimethylammonium chloride and amphoteric surfactants such as lauryldimethylbetaine and betaine lauryldimethylaminoacetate, but are not limited thereto.
  • the content of the ionic surfactant is, for example, 0.01 to 2.0% by mass, 0.05 to 1.0% by mass, or 0.10 to 0.10% by mass. It may be 0.50% by mass.
  • nonionic surfactant Regarding the nonionic surfactant (“nonionic surfactant”), the cosmetic of the present invention has a nonionic surfactant with an HLB value of 10 or more, if it satisfies the condition that the content of the nonionic surfactant is less than 1.0% by mass. , a nonionic surfactant having an HLB value of less than 10.
  • Nonionic surfactants with an HLB value of less than 10 include, for example, bisbutyl dimethicone polyglyceryl-3 (HLB value: 0.5), PEG-10 dimethicone (HLB value: 2.0), or PEG-9 polydimethylsiloxy Examples include, but are not limited to, ethyl dimethicone (HLB value: 4.0).
  • the cosmetic of the present invention further contains a nonionic surfactant having an HLB value of less than 10, the content thereof is, for example, 0.01 to 2.0% by mass, or 0.05 to 1.0% by mass. you can
  • polymeric surfactants or natural surfactants may also be added to the cosmetics of the present invention as long as they do not impair the effects of the present invention.
  • the cosmetic of the present invention may further contain a water-soluble polyether-modified silicone wax.
  • a water-soluble polyether-modified silicone wax is preferable from the viewpoint of the effect of making the cosmetic of the present invention non-sticky, further improving the emulsion stability, and providing a refreshing emulsion.
  • water-soluble polyether-modified silicone waxes include, but are not limited to, bis-PEG-18 methyl ether dimethylsilane, bis-PEG-15 methyl ether dimethicone, PEG-32 methyl ether dimethicone, and PEG-17 dimethicone. .
  • water-soluble polyether-modified silicone waxes can be obtained from commercial products, for example, CosmeticWax2501 (manufactured by Dow Corning Toray Co., bisPEG-18 methyl ether dimethylsilane, melting point 36-42°C), DMC 6038 (Wacker company, bis PEG-15 methyl ether dimethicone, melting point about 30 ° C.), KF-6004 (manufactured by Shin-Etsu Chemical Co., Ltd., PEG-32 methyl ether dimethicone, melting point 45 ° C.), and Silsoft (registered trademark) 895 (MOMENTIVE Co., Ltd.) PEG-17 Dimethicone) and the like, but are not limited to these.
  • CosmeticWax2501 manufactured by Dow Corning Toray Co., bisPEG-18 methyl ether dimethylsilane, melting point 36-42°C
  • DMC 6038 Widecker company, bis PEG-15 methyl ether dimethicone, melting point about 30 °
  • the content of the water-soluble polyether-modified silicone wax is, for example, 0.1 to 20.0% by mass, 0.5 to 15.0% by mass. , or 1.0 to 10.0% by mass.
  • the cosmetic of the present invention may further contain a cooling agent.
  • a cooling agent is preferable from the viewpoint of enhancing the refreshing feeling.
  • Cooling agents include menthol, peppermint oil, l-menthyl glyceryl ether, menthyl lactate, camphor, isopulegol, borneolol, cineol menthone, spearmint, peppermint, menthyl malonate, glycosyl-mono-menthyl-O-acetate, 3- One or more selected from the group consisting of L-menthoxypropane-1,2-diol and 1-menthyl-3-hydroxybutyrate may be used.
  • the content of the water refreshing agent when containing the refreshing agent is, for example, 0.1 to 10.0% by mass, 0.5 to 10.0% by mass, or 1.0 to 5% by mass. 0 mass %.
  • the cosmetic of the present invention contains, for example, propylene glycol, dipropylene glycol, 1,3-butylene glycol, 1,4-butylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, and the like.
  • Glycols such as glycerin, diglycerin and polyglycerin; Sugar alcohols such as sorbitol, mannitol, maltitol, xylitol and erythritol; Sugars such as fructose, glucose, galactose, maltose, lactose and trehalose; Natural pigments such as carotene; plant-based polymers such as gum arabic, tragacanth gum, galactan, guar gum, carob gum, karaya gum, gellan gum, and carrageenan; microbial-based polymers such as xanthan gum, dextran, succinoglucan, and pullulan; collagen, casein, albumin , animal polymers such as gelatin; starch-based polymers such as carboxymethyl starch and methylhydroxypropyl starch; methylcellulose, ethylcellulose, methylhydroxypropylcellulose, hydroxyethylcellulose, sodium cellulose
  • the cosmetic of the present invention can be prepared according to a method commonly used for oil-in-water emulsified cosmetics. That is, it can be prepared by separately mixing the water phase component and the oil phase component, adding the oil phase component while stirring the water phase component, and emulsifying the water phase component.
  • the cosmetic of the present invention is not particularly limited, it may have an emulsion particle size of 7.5 ⁇ m on average and about 20 ⁇ m at maximum.
  • the emulsified particle size can be obtained by, for example, using a microscope to comprehensively determine the size of the emulsified particles (measured with a micrometer) and the distribution of the particles (uniformity of the particles in the microscopic field of view) with the naked eye. can ask.
  • the cosmetic of the present invention can exhibit the effects of the present invention described above, so it may be an infrared protective cosmetic.
  • Cosmetics of Examples and Comparative Examples were prepared according to the formulations shown in Table 1 below, and the stability, infrared cut rate, feel during use, and emulsion particle size of each of the obtained cosmetics were evaluated according to the following criteria. Table 2 shows those results.
  • ⁇ Emulsion particle size> Using a microscope, the size of emulsified particles (measured by a micrometer) and their distribution (uniformity of particles in the speculum field) were comprehensively judged with the naked eye, and the results obtained in Examples and Comparative Examples The emulsified particle size of each cosmetic was determined.
  • the expression "1 to 10 (20)" means that the diameter of most of the emulsified particles was in the range of about 1 to 10 ⁇ m, and there were also a few emulsified particles up to about 20 ⁇ m. ing. The same applies to other expressions.
  • the cosmetics of Examples 1 to 6 are superior in stability to the cosmetics of Examples 7 to 9 because they further contain polyhydroxystearic acid.
  • the cosmetics of Examples 7 to 9 further contained surfactants such as sorbitan sesquiisostearate, isostearic acid, and bisbutyl dimethicone polyglyceryl-3 instead of polyhydroxystearic acid.
  • surfactants such as sorbitan sesquiisostearate, isostearic acid, and bisbutyl dimethicone polyglyceryl-3 instead of polyhydroxystearic acid.
  • these surfactants have a function as a powder dispersant, it has been analyzed that their dispersibility, especially for large-sized metal oxide particles, is slightly inferior to that of polyhydroxystearic acid. be.

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Abstract

L'invention concerne un produit cosmétique qui présente un excellent effet protecteur contre la lumière infrarouge et donne une sensation de fraîcheur unique lorsqu'il est appliqué.　Le produit cosmétique est un produit cosmétique en émulsion huile dans l'eau qui comprend les composants suivants (a) à (d) : (a) des particules d'oxyde métallique ayant un diamètre moyen de particule de 500 à 1500 nm et ayant subi un traitement de surface hydrophobisant, (b) une cellulose d'alkyle rendue hydrophobe, (c) un épaississant à phase aqueuse, et (d) une huile. Dans le produit cosmétique, les particules d'oxyde métallique sont dispersées dans l'huile et la teneur d'un tensioactif non ionique ayant une valeur HLB de 10 ou plus est inférieure à 1,0 % en masse.
PCT/JP2022/003630 2021-02-10 2022-01-31 Produit cosmétique en émulsion huile dans l'eau Ceased WO2022172799A1 (fr)

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