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WO2025168475A1 - Composition de lavage biphasique - Google Patents

Composition de lavage biphasique

Info

Publication number
WO2025168475A1
WO2025168475A1 PCT/EP2025/052646 EP2025052646W WO2025168475A1 WO 2025168475 A1 WO2025168475 A1 WO 2025168475A1 EP 2025052646 W EP2025052646 W EP 2025052646W WO 2025168475 A1 WO2025168475 A1 WO 2025168475A1
Authority
WO
WIPO (PCT)
Prior art keywords
weight
composition
oil
surfactant
biphasic
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/EP2025/052646
Other languages
English (en)
Inventor
Megan Ruth JANKOVSKY
Teanoosh Moaddel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Original Assignee
Unilever Global IP Ltd
Unilever IP Holdings BV
Conopco Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Unilever Global IP Ltd, Unilever IP Holdings BV, Conopco Inc filed Critical Unilever Global IP Ltd
Publication of WO2025168475A1 publication Critical patent/WO2025168475A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • A61K8/03—Liquid compositions with two or more distinct layers
    • 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
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37—Esters of carboxylic acids
    • 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
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/37—Esters of carboxylic acids
    • A61K8/375—Esters of carboxylic acids the alcohol moiety containing more than one hydroxy group
    • 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
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/40—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing nitrogen
    • A61K8/44—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives 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
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/463—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfuric acid derivatives, e.g. sodium lauryl sulfate
    • 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
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/60—Sugars; Derivatives thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00—Preparations for care of the skin
    • A61Q19/10—Washing or bathing preparations
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00—Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/20—Chemical, physico-chemical or functional or structural properties of the composition as a whole
    • A61K2800/26—Optical properties

Definitions

  • Each of the phases and the resulting transient emulsion are suitable to be formulated substantially free of at least one of sulfate-based surfactants, parabens, phthalates, hydantoins, acrylate-based thickeners, dioxanes, d yes, silicones or any combination thereof.
  • sulfate-based surfactants such as shampoos and body washes
  • phthalates such as phthalates, hydantoins, acrylate-based thickeners, dioxanes, d yes, silicones or any combination thereof.
  • Liquid based cleansing compositions such as shampoos and body washes, are common and enjoyed by many consumers. Such compositions typically have water as the predominant i ngredient, and they are often sold in plastic bottles, sachets or tubes.
  • the compositions are conventionally formulated to have components and characteristics that are not only customary but 20 also required by consumers purchasing the cleansing compositions.
  • T raditional cleansing wash compositions are water continuous emulsions, typically having materials of uniform physical properties in every direction (isotropic washes) or composed of fine alternating layers of different components in the form of lamellae (lamellar washes).
  • Formulating wash compositions with multiple actives, including both water and oil soluble actives, in a continuous 25 emulsion can be difficult due to many factors such as the compatibility of the actives used, temperature fluctuations, pH of the carrier liquid, water activity and viscosity requirements.
  • consumers find it difficult to differentiate between traditional products that are continuous emulsions a nd such products, devoid of visual cues, do not offer consumers a brand experience often needed and enjoyed for customer loyalty.
  • T he present invention is directed to a biphasic wash composition that has an aqueous phase and an oil phase where each phase, independently, makes up from 30 to 70% by weight of the total weight of the biphasic wash composition.
  • the aqueous and oil phases are substantially 10 transparent, and surprisingly, yield an opaque and transient emulsion after being mixed.
  • the resulting transient emulsion which comprises at least 30% by weight oil, unexpectedly produces excellent lather characteristics when used for washing.
  • Each of the phases and the resulting transient emulsion are suitable to be formulated substantially free of at least one of sulfate-based surfactants, parabens, phthalates, hydantoins, acrylate-based thickeners, dioxanes, dyes, silicones 15 or any combination thereof. Additional information E fforts have been disclosed for making wash compositions. In U.S. Patent No.
  • a biphasic composition comprising: I. an aqueous phase comprising: a. anionic surfactant having; 5 i) a first anionic surfactant comprising an anionic saccharide-based surfactant or an anionic saccharide-based surfactant, and a C10-C20 lactylate, a C10-C20 glycolate or both and with the proviso that when the lactylate, glycolate or both and saccharide-based surfactants are present, the first anionic surfactant is at least 40% by weight anionic saccharride-based surfactant based on total weight of the first anionic surfactant; 10 ii) a second anionic surfactant comprising at least one of a N-acyl taurate, an acyl isethionate, glycinate, glutamate, alkyl sulfate, alkyl ether sulfate, alkyl sulfonate,
  • an oil phase comprising: a t least 92.5%, and preferably, 93 to 100% and most preferably, from 94 to 100% by weight oil or from 94 to 99% or from 95 to 98% by weight oil or 100% by weight oil that is clear at a temperature from - 25 21°C to 35°C, and preferably, from -20°C to 35°C, and most preferably, from -18°C to 35°C or from - 17°C to 35°C or from -17 to 30°C or from -16 to 28°C
  • the aqueous phase has a pH greater than 5.7 to 8
  • the biphasic composition comprises at least 3.3 to 9.5% by weight of the first anionic surfactant, and from 7.5 to 18.5%, and preferably, from 7.7 to 18%, and most preferably, from 8 to 18% or from 8.2 to 18% or from 11 to 18% or from 12 to 18% or from 13 to 18% total surfactant based 30 on total weight of the biphasic composition and further wherein the
  • the present invention is directed to a biphasic composition
  • a biphasic composition comprising: I. an aqueous phase comprising: a) anionic surfactant having: i) a first anionic surfactant comprising an anionic saccharide-based surfactant, or an anionic saccharide-based surfactant, and a C10-C20 lactylate, a C10-C20 glycolate or a mixture thereof 15 with the proviso that when lactylate, glycolate or both and saccharide-based surfactants are present, the first anionic surfactant is at least 40% by weight anionic sacharride-based s urfactant based on total weight of the first anionic surfactant; ii) 1 to 6.75% by weight of a second anionic surfactant, the second anionic surfactant comprising at least one of a N-acyl taurate, acyl isethionate, glycinate, glutamate, alkyl 20 sulfate,
  • an oil phase comprising: P0000704EP (CPL) 5 at least 92.5%, and preferably, 93 to 100% and most preferably, from 94 to 100% by weight oil or from 94 to 99% or from 95 to 98% by weight oil or 100% by weight oil that is clear at a temperature from - 21°C to 35°C, and preferably, from -20°C to 35°C, and most preferably, from -18°C to 35°C or from - 17°C to 35°C or from -17 to 30°C or from -16 to 28°C wherein the aqueous phase has a pH greater 5 than 5.7 to 8, and the biphasic composition comprises at least 3.3 to 9.5% by weight of the first anionic surfactant, and from 7.5 to 18.5%, and preferably, from 7.7 to 18%, and most preferably, from 8 to 18% or from 8.2 to 18% or from 11 to 18% or from 12 to 18% or from 13 to 18% total surfactant based on total weight of the biphasic composition and
  • the invention is directed to a method for making an end use wash composition comprising the steps of: a ) combining the aqueous phase and oil phase of the biphasic composition according to the first or second aspect of the invention; and 25 b) generating a translucent or opaque transient emulsion, transient emulsion being an end use wash composition that returns to a biphasic composition when at rest for a period from 3 m inutes to 1 day, or from 4 minutes to 5 hours or from 5 minutes to 2 hours or from 5 minutes to 1 hour, or from 5 to 30 minutes, or from 7 to 25 minutes or in 8 to 20 minutes (or 8.5 to 18 minutes or 9.5 to 17 minutes).
  • the invention is directed to the use of an oil phase and an aqueous phase comprising a taurate, isethionate or both, and a betaine, and an anionic saccharide-based surfactant, or anionic P0000704EP (CPL) 6 s accharide-based surfactant and C10-C20 to produce a biphasic composition that is suitable to agitate to produce a wash composition which is a transient emulsion.
  • B iphasic as used herein to describe the composition of the present invention, means a composition having two phases or sub-compositions, and particularly, a distinct aqueous and an oil phase.
  • Transient emulsion means a temporary emulsion made by moderately (including by hand) mixing, agitating, shearing, shaking or swirling (or the like) the described aqueous and oil phases (i.e., the biphasic composition for 5 seconds to 3.5 minutes, and preferably, from 10 seconds to 2.5 minutes, and most preferably, from 20 seconds to 1.5 minutes or from 30 seconds to 1 minute where moderately means not requiring a mechanical device) whereby the transient emulsion is water 10 continuous and opaque and reverts to a biphasic composition in 1 day or less.
  • moderately including by hand mixing, agitating, shearing, shaking or swirling
  • Substantially transparent means at least 80%, or at least 85% or at least 90% or 90 to 99% or 90 to 97% or 90 to 95% of the light in contact with a phase (e.g., the aqueous and oil phases of the invention) passes through.
  • a phase e.g., the aqueous and oil phases of the invention
  • 98 to 100% or 100% of light passes t hrough the aqueous phase and/or oil phase of the invention. Therefore, the phases can be clear.
  • Aqueous phase means a phase having at least 8% by weight to 40% by weight water based on total weight of the aqueous phase where such phase is not miscible with an oil phase.
  • Oil phase as used herein means a phase having at least 92.5% by weight oil and not miscible with a water phase.
  • Skin as used herein, is meant to include skin on the arms (including underarms), face, feet, neck, chest, h ands, legs, buttocks, nails and scalp (including hair).
  • Polyol means 3 or more hydroxy groups such 20 as a triol, tetraol or hexol and not a diol used as solvent.
  • the transient emulsion is an end use wash composition that is creamy, not sticky or draggy, and typically mimics a lotion in consistency. Such an end use wash composition surprisingly provides excellent lather and moisturizing attributes when u sed.
  • the end use composition of the invention is translucent or opaque, meaning less than 50% (or less than 30% or less than 25% or less than 20% or from 0 to 15% or 0.0%) of light passes through 25 the end use composition (i.e., transient emulsion).
  • the end use composition is homogeneous prior to the phases it is made from starting to separate, free of syneresis and precipitate/particle formation that can lead to a grainy sensation while using.
  • the aqueous phase and oil phase of the present invention each independently have a viscosity from 25 to 7,000 cps (or from 50 to 5,000 cps or from 60 to 4,000 cps, or from 70 to 3,000 cps, where 1 Pa-s is equal to 1000 cps).
  • the aqueous 30 phase may optionally comprise a thickener, as later defined, including those classified as a polymer w ith a cellulosic backbone. Thickener is desired to control and increase the time it takes for the transient emulsion to revert to being biphasic.
  • the end use composition is one suitable to be wiped or washed off, and preferably, washed off with water.
  • the end use composition can be a home care P0000704EP (CPL) 7 c leaning composition but is preferably a make-up remover, facial wash, hand wash or personal care liquid body wash.
  • the end use composition can h ave a viscosity from at least 50 to 235,000 cps, and preferably, from 100 to 225,000 cps, and most preferably, from 200 to 210,000 cps (or from 500 to 205,000 cps, or from 2,000 to 200,000 cps, or 5 from 4,000 to 180,000 cps or from 10,000 to 165,000 cps).
  • the end use composition may optionally comprise medicinal or therapeutic agents, but preferably, is a wash which is cosmetic and non- t herapeutic such that the wash removes water soluble and water insoluble soils.
  • the end use composition is a home care composition like a table-top or toilet cleaning composition.
  • the end use composition is a shampoo composition.
  • the end use composition is a personal wash composition, and therefore, a l iquid body wash.
  • the end use composition of the present invention may optionally comprise skin benefit ingredients added thereto such as emollients, vitamins and/or derivatives thereof, resorcinols, retinoic acid precursors, colorants, moisturizers, sunscreens, mixtures thereof or the like.
  • the skin benefit ingredients (or agents) may be water or oil soluble. If 15 used, oil soluble skin benefit agents typically make up to 3.5% by weight of the oil phase whereby water-soluble skin benefit agents, when used, typically make up to 10% by weight of the aqueous phase of the present invention.
  • the aqueous phase and end use composition typically have a pH greater than 5.75 to 8.5, preferably over 5.85 to 7.5, and most preferably, from 6 to 7 or from 6.1 to 6.9 or from 6.2 to 6.8.
  • Viscosity unless noted otherwise, is taken with a Discovery HR-2 Rheometer 20 using sand blasted plates with a 1000-micron gap and having a shear rate of 0.1-15 s -1 . Viscosity is m easured at 250C.
  • Stable as used herein, means not displaying precipitate, flocculation or visible color change for at least 2 months, and preferably, 3 to 4 months when stored at 25°C.
  • substantially free of means less than 2.0% by weight of the end use composition, and preferably, less than 1.5% by weight, and most preferably, less than 1.0% by weight or less than 25 0.85% or less than 0.5% or less than 0.25% or less than 0.15% or less than 0.1% or less than 0.05% or 0.0% (none) based on total weight of the of the end use composition.
  • substantially free of means less than 75 ppm, and preferably, less than 50 ppm, and most preferably, less than 25 ppm or less than 5 ppm or from 0.00001 to 2 ppm or less than 1 ppm o r 0.0 (no) ppm dioxane based on total weight of dioxane in the end use composition.
  • transient emulsion, end use composition, end use wash composition and liquid personal wash composition are meant to be the same.
  • the term comprising is meant to encompass the terms consisting essentially of and consisting of.
  • the end use composition of this invention comprising P0000704EP (CPL) 8 s urfactant, water and active is meant to include a consisting essentially of the same and a composition consisting of the same. All ranges defined are meant to include all ranges subsumed therein. Except in the operating comparative examples, or where otherwise explicitly indicated, all numbers in this description indicating amounts or ratios of materials or conditions and/or physical 5 properties of materials and/or use are to be understood as modified by the word “about”. The disclosure, as found herein, is to be considered to cover all embodiments as found in the claims as being multiply dependent upon each other irrespective of the fact that claims may be found without multiple dependency or redundancy.
  • the anionic saccharide-based surfactant suitable for use is typically a mono-, di- or oligosaccharide (sugar) esterified with a moiety having a carboxylic acid group.
  • the anionic saccharide-based surfactant used has the formula: I 15 where: R is a C 10 -C 20 alkyl, and preferably, a C 12 -C 18 alkyl, and most preferably, a C 14 -C 16 alkyl; m is 0 or 1 and n is 1, 2, or 3; P0000704EP (CPL) 9 each R 1 and R 2 is independently a C 1 -C 3 alkyl, H, or OH wherein both R 1 groups are not simultaneously OH and both R 2 groups are not simultaneously OH and further wherein when m is zero preferably one R 1 group and one R 2 group is OH; and X + is a counter ion that can include K + , Na + , NH 4 + or a mixture thereof.
  • the anionic saccharide-based surfactant used is disodium cocoglucoside citrate, disodium cocoglucoside tartrate or a mixture thereof.
  • the same are commercially available from suppliers like Lamberti Eucarol® brand name.
  • the C10 -C20 lactylate i.e., used optionally as a portion of the first anionic surfactant
  • the same c an be a mono- or polylactyl or mixture thereof as lactic acid can, for example, undergo self- 10 esterification.
  • C10-C20 lactylate suitable for use includes lactylic esters of fatty acids represented by the formula: II 15 where Ra is a C9 to C19 hydrocarbon, each Rb is independently hydrogen or a C1-3 alkyl, u is an integer from 0 to 3 and Y+ is a counter ion that can include K + , Na + , NH 4 + or a mixture thereof.
  • the C10-C20 lactylate comprises 40 to 100%, and preferably, 50 to 95%, and most preferably, 60 to 90% (or 65 to 85% or 70 to 80%) by weight of a C12-C20 (or C14-C20 or C16-C20 or C16-C18) group (i.e., acyl portion) based on total weight of lactylate in the compositions.
  • the 20 preferred lactylates, when used, are C14-C20 lactylates, and more preferably, C16-C18 lactylates like palmitoyl-1-lactylate, stearoyl-1-lactylate or mixtures thereof.
  • Polylactyls are also suitable for use, like palmitoyl-2-lactylate, stearoyl-2-lactylate or mixtures thereof.
  • sodium lauroyl lactylate, sodium stearoyl lactylate or mixtures thereof are preferred.
  • Fatty acid sources are typically vegetable, soy, coconut, 25 and palm oil.
  • less than 75%, and preferably, less than 45%, and P0000704EP (CPL) 10 most preferably, less than 30% by weight of the lactylate used based on total weight of lactylate is derived from palm kernel oil.
  • from 0.001 to 40%, and preferably, from 0.01 to 35%, and most preferably, from 1 to 30% by weight of total lactylate used in the compositions is derived from palm kernel oil.
  • the lactylate used is 5 sodium stearoyl lactylate where less than 5% by weight (or 0.0% by weight) of the lactylate used is derived from palm kernel oil.
  • anionic suitable for optional use is one where the R b groups are hydrogen and the anionic represented by formula (II) is a C 10 -C 20 glycolate.
  • the first anionic surfactant is at least 40% by weight anionic saccharide-based surfactant, and preferably, at least 45% by weight, and most preferably, from 45 to 99.5% (or from 45 to 95%, or from 48 to 80%, or from 48 to 70%) by weight anionic saccharide-based surfactant based on total weight of the first anionic surfactant in the aqueous phase.
  • the f irst anionic surfactant in the aqueous phase and end use composition can be 100% by weight 15 anionic saccharide-based surfactant.
  • the total amount of first anionic surfactant used in the aqueous p hase is at least 1.5% by weight of the end use composition, and often from 2 to 12%, and preferably, from 2.2 to 11% or from 2.2 to 10% (or from 2.4 to 10.5% or from 2.3 to 9% or from 4 to 9% or from 4.25 to 8.5%, or from 4.5 to 8.5% or from 4.7 to 8%) by weight of the biphasic 20 composition.
  • the second anionic surfactant and taurate suitable for use the same is limited only to the extent that it is one suitable for use in a consumer product.
  • M includes sodium, ammonium and/or potassium ions.
  • R 3 is C5 to C17 alkyl. In another embodiment at least half of the R 3 groups are C7- C 18 alkyl. In still another embodiment at least half of the R 3 groups are C 9 to C 15 alkyl or C 9 to C 13 P0000704EP (CPL) 11 alkyl. R 3 may be saturated or unsaturated. In yet another embodiment R 4 is methyl. For the avoidance of doubt, overall alkyl chain lengths described herein will include the carbonyl carbon.
  • Illustrative acyl taurates that may be used in the invention include, for example, taurates commonly known as sodium methyl lauroyl taurate, potassium methyl lauroyl taurate, sodium methyl myristoyl 5 taurate, potassium methyl myristoyl taurate, ammonium methyl myristoyl taurate, sodium methyl cocoyl taurate, potassium methyl cocoyl taurate, ammonium methyl cocoyl taurate, sodium methyl oleoyl taurate, potassium methyl oleoyl taurate, ammonium methyl oleoyl taurate, sodium lauroyl taurate, potassium lauroyl taurate, ammonium myristoyl taurate, sodium cocoyl taurate, potassium oleoyl taurate, mixtures thereof or the like.
  • taurates commonly known as sodium methyl lauroyl taurate, potassium methyl lauroyl taurate, sodium methyl myristoyl 5 taurate, potassium methyl myristoyl taurate, ammonium methyl myristo
  • the acyl isethionate suitable for use may be an alkoxylated isethionate such as is described in Ilardi et al., U.S. Pat. No.5,393,466, entitled "Fatty Acid Esters of Polyalkoxylated Isethionic acid.
  • the isethionate surfactants can include the reaction product of fatty acids esterified with isethionic acid and neutralized with a base like sodium or potassium h ydroxide.
  • the acyl isethionate surfactant can have the general formula: 20 R 5 C-O(O)-C(X)H-C(Y)H-(OCH 2 -CH 2 ) v -SO 3 - M + (IV), where R 5 is an alkyl group having 5 to 19 carbons, v is an integer from 0 to 4 (1 to 4 for the alkoxylated option), X and Y are each independently hydrogen or an alkyl group having 1 to 4 carbons and M is as previously defined.
  • v is 0, for either the carbon alpha or beta to the 25 sulfonate group to have one C1-4 alkyl substitution in place of hydrogen, preferably a C1-3 alkyl substitution and most preferably, a methyl group.
  • R 5 to have a degree of unsaturation and typically no more than 2, and more preferably, no more than 1 double bond.
  • Illustrative examples of the isethionates suitable for use in the wash composition of the present 30 invention include sodium capryl isethionate, sodium caproylyl isethionate, sodium capryl methyl P0000704EP (CPL) 12 isethionate, sodium caproylyl methyl isethionate, sodium cocoyl isethionate, sodium cocoyl methyl isethionate, sodium lauroyl isethionate, sodium lauroyl methyl isethionate, potassium lauroyl i sethionate, potassium lauroyl methyl isethionate, sodium oleoyl isethionate, sodium oleoyl methyl isethionate, sodium stearoyl isethionate, sodium stearoyl methyl isethionate, sodium myristoyl 5 isethionate, sodium myristoyl methyl isethionate, sodium palmitoyl isethionate, sodium palmitoyl methyl isethionat
  • the isethionate used in the present invention is sodium lauroyl isethionate sodium cocoyl isethionate or a mixture thereof.
  • R 5 can be branched and comprise from 1 to 3 carbon atoms 10 with a C1-6 alkyl, C1-6 alkoxy or both as a branch chain where the length of R5 remains 5 to 19 carbon atoms.
  • the isethionate used has a methyl branch on its alpha or beta carbon.
  • the alpha carbon is substituted with 2 methyl groups (i.e., is a dimethyl alpha carbon).
  • acyl glycinates include C8 to C20, and preferably, 15 C 10 to C 18 and most preferably, C 12 to C 16 or C 12 to C 14 acyl glycinates.
  • Illustrative and nonlimiting examples of the glycinates that may be used include sodium lauroyl glycinate, sodium myristoyl glycinate, sodium cocoyl glycinate, potassium lauroyl glycinate, sodium myristoyl glycinate, potassium cocoyl glycinate or a mixture thereof.
  • sodium cocoyl glycinate, potassium cocoyl glycinate or a mixture thereof are often preferred when acyl glycinates 20 are used.
  • sodium or potassium lauroyl glycinate or both may also be used in the compositions of the invention.
  • the acyl portion of the glycinates that may be selected for use is preferably saturated but suitable to be unsaturated w ith no more than 2 double bonds, including conjugated double bonds.
  • Acyl glutamates (and salts thereof) suitable for optional use include C 8 to C 20 , and preferably, C 10 to 25 C18 and most preferably, C12 to C16 or C12 to C14 acyl glutamates where the acyl portion is preferably saturated, but as is the case with glycinates, suitable to be unsaturated with no more than 2 double bonds, including conjugated double bonds.
  • glutamates that may be used include sodium capryloyl glutamate, sodium lauroyl glutamate, sodium myristoyl glutamate, sodium cocoyl glutamate, sodium stearoyl glutamate, sodium oleyl 30 glutamate, disodium oleyl glutamate, dipotassium capryloyl glutamate, dipotassium undecylenoyl glutamate, disodium capryloyl glutamate, disodium cocoyl glutamate, disodium lauroyl glutamate, disodium stearoyl glutamate, disodium undecylenoyl glutamate, potassium capryloyl glutamate, P0000704EP (CPL) 13 potassium cocoyl glutamate, potassium lauroyl glutamate, potassium myristoyl glutamate, potassium stearoyl glutamate, potassium oleyl glutamate, potassium undecylenoyl glutamate, sodium oli
  • sodium lauroyl 5 glutamate, sodium cocoyl glutamate, sodium stearoyl glutamate or a mixture thereof is preferred.
  • sodium myristoyl and/or sodium cocoyl glutamate may be desired.
  • anionic surfactants suitable to be selected for use these include alkyl sulfates, alkyl ether sulfates, alkyl sulfonates, alpha-olefin sulfonates, alkyl sulfosuccinates, alkyl ether sulfosuccinates,10 acyl sarcosinates or a mixture thereof (including any salts thereof).
  • compositions of the present invention are optionally, and preferably, substantially free of sulfate-based surfactants.
  • sulfate-based surfactant may be u sed at an amount of less than 2% by weight of the total weight of the end use composition.
  • the sulfate-based surfactants can include C 8 -C 20 alkyl sulfates and/or C 8 -C 20 alkyl 15 ether sulfates.
  • sodium lauryl sulfate, sodium lauryl ether sulfate, ammonium lauryl sulfate, ammonium lauryl ether sulfate, sodium pareth sulfate or a mixture thereof may be selected for use.
  • the ethoxy portion is typically from 1 to 3 ethoxy units in length, and often, from 2 to 3 ethoxy units in length.
  • the same can include alkyl sulfonates, alkyl glyceryl ether sulfonates, alkyl alpha olefin sulfonates (hydrocarbons being an alkene, CxH2x, with a double bond in the alpha position) or a mixture thereof.
  • the alkyl portion is from C 8 - C24, and preferably, from C10-C20, and more preferably, from C12 to C18 or from C12 to C16 or from C14 to C16.
  • Suitable succinates that may optionally be included in the compositions are those with a C 10 to C 20 hydrophobic portion.
  • Illustrative examples include disodium oleamido MIPA sulfosuccinate, disodium oleamido MEA sulfosuccinate, disodium lauryl sulfosuccinate, disodium laureth sulfosuccinate, diammonium lauryl sulfosuccinate, diammonium laureth sulfosuccinate, dioctyl sodium sulfosuccinate, disodium oleamide MEA sulfosuccinate, sodium dialkyl 30 sulfosuccinate, or a mixture thereof.
  • acyl sarcosinates suitable for use include those having a C 8 -C 20 or C 10 -C 18 or C 12 -C 18 acyl group.
  • Illustrative examples of the sarcosinates that may optional be used include sodium lauroyl sarcosinate, sodium cocoyl sarcosinate, or a mixture thereof.
  • At least one anionic surfactant that may be used is selected from 5 sodium lauryl sulfosuccinate, sodium myristoyl sulfosuccinate, sodium cocoyl sulfosuccinate, sodium stearoyl sulfosuccinate, sodium laureth sulfosuccinate, sodium pareth sulfosuccinate, disodium laureth sulfosuccinate, disodium lauryl sulfosuccinate, diethylhexyl sodium sulfosuccinate or a mixture thereof.
  • the anionic surfactant used in the composition can include sodium methyl 10 2-sulfolaurate or disodium 2-sulfolaurate or both. Mixtures of any of the described anionic surfactants may be used with the anionic saccharide-based s urfactant described herein, and the cation portion of their salts can include sodium, potassium and ammonium ions or mixtures thereof.
  • the second anionic surfactant in the aqueous phase is preferably 15 from 40 to 100%, and preferably, from 45 to 100%, and most preferably, from 47.5 to 100% (or from 45 to 75% or from 45 to 65%) by weight of N-acyl taurate based on total weight of the second anionic surfactant in the aqueous phase.
  • the second anionic surfactant will typically make up from 1 to 6.75%, and preferably, from 1.5 to 6.25% and most preferably, from 2 to 6% (or from 3 to 5.8% or from 3 to 5.5% 20 by weight of the biphasic composition.
  • isethionate when used, is present at an amount from 1 to 2.9% or from 1 to 2.7% or from 1.2 to 2.65% by weight of the biphasic composition.
  • Amphoteric surfactants may be included in the compositions. Illustrative examples include cocoyl amine oxide, lauramine oxide, myristamine oxide, palmitamine oxide, stearamine oxide, oleamine 25 oxide, cocamidopropyl amine oxide, lauryl amidopropyl amine oxide, myristyl amidopropyl amine oxide, palmityl amidopropyl amine oxide, stearyl amidopropyl amine oxide, oleamidopropyl amine oxide or a mixture thereof.
  • amphoteric surfactants suitable for optional use include imidazolines, sodium acyl amphoacetates, sodium acyl amphopropionates, disodium acyl amphodiacetates and disodium acyl 30 amphodipropionates where the acyl (i.e., alkanoyl group) can comprise a C7-C18 alkyl portion.
  • Illustrative examples of the amphoteric surfactants suitable for use include sodium lauroamphoacetate, sodium cocoamphoacetate, sodium lauroamphoacetate, sodium cocoamphoacetate, cocamphodipropionate or a mixture thereof.
  • the amphoteric selected when used, can optionally be at least 80%, 5 and preferably, at least 85%, and most preferably, at least 90% (or 90 to 100% or 94 to 100% or 94 to 98% or 100%) by weight amine oxide whereby such amine oxide can have the formula: R x -N + (R y ) 2 -O- where R x is a C8-20 alkyl, and preferably, a C10-18 alkyl, and most preferably, a C12-18 alkyl (or C12-16 alkyl) and R y is H or a C 1-6 alkyl or C 1-4 alkyl or ⁇ C 1-3 alkyl or C 1-2 alkyl or -CH 3 .
  • the preferred amine oxide selected is cocoyl amine oxide, lauramine oxide, myristamine 10 oxide, palmitamine oxide, stearamine oxide, oleamine oxide or a mixture thereof.
  • the zwitterionic surfactants suitable for inclusion in the compositions of the present invention include those with at least one acid group.
  • the acid group may be a carboxylic or a sulphonic acid group. They often include quaternary nitrogen, and therefore, can be quaternary amino acids.
  • Such surfactants should generally include an alkyl or alkenyl group of 6 to 18 carbon atoms and 15 generally comply with the overall structural formula: R 6 --[--C(O)--NH(CH2)q--]r--N + --(R 7 --)(R 8 )A—B (IV) where R 6 is alkyl or alkenyl of 5 to 19 carbon atoms; R 4 and R 5 are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 3 carbon atoms; q is 2 to 4; r is 0 or 1; A is an alkylene of 1 to 3 c arbon atoms optionally substituted with hydroxyl, whereby B is --CO2-- or --SO3--.
  • Suitable zwitterionic surfactants that may be used in the present invention and within the above general formula include simple betaines of formula: R 3’ --N + --(R 7 )(R 8 )CH 2 CO 2 - (V) and amido betaines of formula: R 6 --CONH(CH 2 ) t --N + --(R 7 )(R 8 )CH 2 CO 2 - (VI) 25 where t is 2 or 3.
  • P0000704EP (CPL) 16 In both formulae R 6 , R 7 and R 8 are as previously defined. R 6 would, in particular, include a mixture of C7 to C17 alkyl groups and R 7 and R 8 are preferably methyl or ethyl groups, most preferably methyl groups.
  • R 3’ is C 6 to C 18 .
  • the zwitterionic surfactant is a sulphobetaine of the formula: R 3’ --N + --(R 7 )(R 8 )(CH2)3SO3- (VII) or R 6 --CONH(CH 2 ) u --N + --(R 7 )(R 8 )(CH 2 ) 3 SO 3 - (VIII) where u is 2 or 3, or variants of these in which --(CH 2 ) 3 SO 3 - is replaced by -CH 2 C(OH)(H)CH 2 SO 3 -. 10 In these formulae (VII and VIII), R 3 ’, R 6 , R 7 and R 8 are as previously defined.
  • zwitterionic surfactants suitable for use include betaines like lauryl betaine, laurylhydroxy sulfobetaine, lauryldimethyl betaine, coco betaine, cocoamidopropylhydroxylsulfo betaine, cocodimethyl carboxymethyl betaine, cocamidopropyl betaine, laurylamidopropyl betaine, 15 cocodimethyl carboxymethyl betaine, mixtures thereof or the like.
  • a dditional zwitterionic surfactants suitable for use include lauryl hydroxysultaine, cocamidopropyl hydroxy sultaine or mixtures thereof.
  • Such surfactants are made commercially available, and it is within the scope of the invention to employ mixtures of the aforementioned surfactants.
  • Even other zwitterionic surfactants that may be used in the present are C 16-20 amidopropyl 20 hydroxysultaines where the C16-20 amidopropyl hydroxysultaine is preferably palmityl, stearyl and/or oleyl amidopropyl hydroxysultaine, and most preferably, palmityl amidopropyl hydroxysultaine.
  • zwitterionic surfactants suitable for optional use include behenyl betaine, capryl/capramidopropyl betaine, stearyl betaine, myristyl hydroxysultaine, palmityl hrdroxysultaine, or a mixture thereof.
  • the zwitterionic surfactant used in the compositions of25 this invention is cocamidopropyl betaine.
  • Zwitterionic surfactant or amphoteric surfactant or both typically makes up from 1.5 to 12%, and preferably, from 2 to 11%, and most preferably, from 2.2 to 10% (or from 2.4 to 9% or from 2.5 to 8.5% or from 4.5 to 8.5%) by weight of the biphasic composition.
  • the total of zwitterionic surfactant and/or amphoteric surfactant the biphasic composition is at least 20%, and preferably, from 21 to 38%, and most preferably, from 22 to 35% or from 23 to 33% or from 24 to 33% or from 25 to 33% by weight of the total weight of surfactant in the biphasic composition.
  • less than 95%, and preferably, less than 90%, and most preferably, less than 85% (or less than 80% or from 5 to 22% or from 6 to 20% or from 10 to 15%) by weight of the hydrophobic portion of the surfactants used in the present invention are recovered from petroleum, palm oil, palm kernel oil and/or coconut oil.
  • from 90 to 100% by w eight of the hydrophobic portion of at least one surfactant used herein is not recovered from 10 petroleum, palm oil, palm kernel oil and/or coconut oil.
  • from 0.0 to 15% or from 0.05 to 12% or from 0.5 to 10% by weight of any of the surfactants used in the compositions of the invention may have hydrophobic portion with carbon recovered from purple carbon, and that is, carbon recovered from carbon dioxide waste gas via biotechnology that utilizes microbial gas fermentation.
  • At least 10% or at least 20%, and preferably, at least 30%, and most preferably, from 40 to 100%, or from 50 to 100% (or from 15 to 35% or 10 to 20%) by weight of the surfactants have hydrophobic chain recovered from triglycerides such as those recovered from jojoba, a vocado, olive, and nuts, as well as from seed oil (e.g., sunflower, linseed, rapeseed), and especially, from soy bean oil.
  • seed oil e.g., sunflower, linseed, rapeseed
  • the solvent suitable for use in the compositions of the present invention are limited only to the extent such solvent may be included in topical wash compositions.
  • Such a solvent comprises from 83 to 100% by weight C 3 to C 10 diol (or glycol), and preferably, from 85 to 100%, and most preferably, from 90 to 100% (or from 93 to 97% or from 93 to 98% or from 94 to 99.5% or 100%) by weight C3 to C10 d iol whereby the biphasic composition comprises from 6.5 to 16%, and preferably, 7 to 16%, and most 25 preferably, 7 to 14.5% (or from 8 to 14% or from 8.5 to 13.5% or from 9 to 13%) by weight of the solvent.
  • solvents suitable for use include propylene glycol, dipropylene g lycol, polypropylene glycol (e.g., PPG-9), polyethylene glycol, butylene glycol, pentylene glycol, hexylene glycol, octylene glycol, 1,2-propanediol, 1,2-butanediol, 1,2-pentanediol, 1,2-hexanediol, 1,2-heptanediol, 1,2-octandiol or mixtures thereof.
  • PPG-9 polypropylene glycol
  • the solvent used 30 can be a mixture of propylene glycol and hexylene glycol at a weight ratio from 1:6 to 6:1 or from 1:5 to 5:1 or from 1:4 to 4:1 or from 1:3 to 3:1 or from 1:2 to 2:1.
  • the solvent used is at least 80% or at least 90% or from 90 to 100% by weight hexylene glycol.
  • P0000704EP (CPL) 18 Conventional humectants may optionally be included as additives in the compositions of the present invention to assist in moisturizing skin when the resulting end use compositions (i.e., t ransient emulsions) are made by combining the aqueous and oil phases.
  • polyols are generally polyhydric alcohol type materials (polyols) that include glycerol (i.e., glycerine or glycerin), 5 sorbitol, hydroxypropyl sorbitol, ethoxylated glycerol, propoxylated glycerol and mixtures thereof. Most preferred is glycerin, sorbitol or a mixture thereof.
  • the amount of humectant employed may range anywhere from 0.0 to less than 7% by weight of the total weight of the aqueous phase.
  • humectant makes up from 0.1 to 6%, and preferably, from 0.2 to 5.25%, and most preferably, from 0.2 to 5% or from 0.3 to less than 5% or from 0.3 to 2.5% by weight (or 10 from 0.2 to 1.5% by weight) of the total weight of the aqueous phase.
  • a s to thickener or thickening agent suitable for optional use in the aqueous phase of the present invention these materials are used particularly, as noted, to adjust the time it takes for the transient emulsion to revert back to an aqueous and oil phase.
  • those thickeners generally classified as polysaccharides.
  • Examples include fibers, starches, natural/synthetic gums 15 and cellulosics.
  • Representative of the starches are chemically modified starches such as sodium hydroxypropyl starch phosphate and aluminum starch octenylsuccinate.
  • Tapioca starch may often be selected, as can maltodextrin.
  • Suitable gums include xanthan, sclerotium, pectin, karaya, arabic, agar, guar (including Acacia senegal guar), carrageenan, alginate and combinations thereof.
  • Suitable cellulosics include hydroxypropyl cellulose, hydroxypropyl methylcellulose, ethylcellulose, 20 sodium carboxy methylcellulose (cellulose gum/carboxymethyl cellulose) and cellulose (e.g. cellulose microfibrils, cellulose nanocrystals or microcrystalline cellulose).
  • Sources of cellulose microfibrils include secondary cell wall materials (e.g. wood pulp, cotton), bacterial cellulose, and primary cell wall materials.
  • the source of primary cell wall material is selected from the parenchymal tissue of fruits, roots, bulbs, tubers, seeds, leaves and combinations 25 thereof; and more preferably, is selected from citrus fruit, tomato fruit, peach fruit, pumpkin fruit, kiwi fruit, apple fruit, mango fruit, sugar beet, beet root, turnip, parsnip, maize, oat, wheat, peas or combinations thereof. Even more preferably when used, cell wall material is selected from citrus f ruit, tomato fruit and combinations thereof.
  • An often preferred source of primary cell wall material is parenchymal tissue from citrus fruit. Citrus fibers, such as those made available by Herbacel® as 30 AQ Plus can also be used as a source for cellulose microfibrils.
  • the cellulose sources can be surface modified by any of the known methods including those described in Colloidal Polymer Science, Kalia et al., “Nanofibrillated cellulose: surface modification and potential applications” (2014), Vol 292, Pages 5-31. P0000704EP (CPL) 19 Still other thickening agents that may optionally be used include esters of polyalkoxylated polyols and fatty acids.
  • Such agents include PEG 18 glyceryloleate/cocoate, polyethylene glycol 6000 distearate, INCI name of PEG-150 distearate; PEG 120 methyl glucose dioleate and PEG 120 methylglucose trioleate (Glucomate TM DOE-120 and Glucomate TM VLT made available by 5 Lubrizol); PEG-150 Pentaerythrityl Tetrastearate (Crothix TM , Crothix TM Liquid, and Versathix TM made available by Croda); PEG-150 Polyglyceryl-2 Tristerate (Genapol® LT made available by Clariant); and PEG/PPG-120/10-Trimethlolpropane Trioleate (Arlypon® TT made available by BASF).
  • PEG 18 glyceryloleate/cocoate polyethylene glycol 6000 distearate, INCI name of PEG-150 distearate
  • hydrophilic polyalkoxylated arms are two for PEG-150 distearate, three for Arlypon® TT, four for Genapol® LT and Crothix TM , Crothix TM Liquid, and Versathix TM , and five for 10 Glucomate TM DOE-120.
  • a nother class of optional thickening agent suitable for use includes crosslinked polyacrylates such as the Carbomers, polyacrylamides such as Sepigel® 305 and taurate copolymers such as Simulgel® EG and Aristoflex® AVC, the copolymers being identified by respective INCI nomenclature as Sodium Acrylate/Sodium Acryloyldimethyl Taurate and Acryloyl 15 Dimethyltaurate/Vinyl Pyrrolidone Copolymer.
  • Another synthetic polymer suitable for optional thickening is an acrylate-based polymer made commercially available by Seppic and sold under the name Simulgel INS100. Calcium carbonate, fumed silica, and magnesium-aluminum-silicate may also be used.
  • the compositions of the 20 present invention are substantially free of thickener that is acrylate derived or based, and preferably, the compositions have less than 0.5% by weight, and most preferably, no (0.0%) by weight of acrylate-based thickener.
  • the thickener used is a cationic polymer.
  • Preferred cationic polymers are quaternary nitrogen-containing polysaccharides, preferably quaternary nitrogen-containing 25 cellulose ethers, such as those described in U.S. Pat. Nos.3,472,840; 3,962,418; 4,663,159, and U.S. Pat. No.5,407,919.
  • quaternary nitrogen-containing hydroxyethyl celluloses are quaternary nitrogen-containing hydroxyethyl celluloses.
  • cationic polymers are salts of hydroxyethyl cellulose reacted with a trimethyl ammonium substituted epoxide such as Polyquaternium-10, made commercially available b y Dow® as UCARETM Polymer JR-125, UCARE Polymer JR-400, UCARE Polymer KF, UCARE 30 Polymer JR-30M, UCARE Polymer LR-400, UCARE Polymer LR-30M, UCARE Polymer LK mixtures thereof or the like.
  • a trimethyl ammonium substituted epoxide such as Polyquaternium-10, made commercially available b y Dow® as UCARETM Polymer JR-125, UCARE Polymer JR-400, UCARE Polymer KF, UCARE 30 Polymer JR-30M, UCARE Polymer LR-400, UCARE Polymer LR-30M, UCARE Polymer LK mixtures
  • Other preferred cationic polymers include those known as hydrophobically-modified cationic c onditioning polymers such as those made commercially available also by Dow® under the names SoftCATTM SL 5, SoftCAT SL 30, SoftCAT SL 60, SoftCAT SL 100, SoftCAT SK-L, SoftCAT SK-M, and SoftCAT SK-H. Included for suitable use in the aqueous phase of the invention as thickening 5 agent are those cationic polymers referred to as Polyquaternium-7, Polyquaternium-44, Polyquaternium 24 or mixtures thereof.
  • the thickening agent used comprises at least 50%, and preferably, at least 75%, and most preferably, at least 85% (or from 90 to 100% or from 90 to 96% or from 92 to 98% or from 95 to 99.5% or 100%) by weight
  • Polyquaternium-67 (2-hydroxyethyl cellulose ether, reacted with N,N,N-trimethyl-N- 10 oxiranylmethylammonium chloride and N-dodecyl-N,N-dimethyl-N-oxiranylmethylammonium c hloride
  • Dow® under the SoftCAT SK-MH name.
  • nonionic surfactants are typically used at levels from 0.2 to 6% (or from 0.2 to 5% or from 0.2 to 4% 20 or from 0.6 to 3% or 0.6 to 1.5%) by weight of the biphasic composition.
  • the nonionic surfactants which may be used include the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkylphenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide.
  • nonionic surfactant compounds are alkyl (C6-C22) phenol condensates with ethylene oxide, the condensation products 25 of aliphatic (C8-C18) primary or secondary linear or branched alcohols with ethylene oxide, and products made by condensation of ethylene oxide with the reaction products of propylene oxide and ethylenediamine.
  • Other nonionic surfactants include long chain tertiary amine oxides, long chain tertiary phosphine oxides, dialkyl sulphoxides, or the like.
  • the nonionic may also include a sugar amide, such as a polysaccharide amide.
  • the surfactant may be one of the lactobionamides described in U.S. Pat. No.5,389,279 to Au et al., e ntitled "Compositions Comprising Nonionic Glycolipid Surfactants issued Feb.
  • the anionic surfactant used is glycerol monostearate, cocamide monoethanolamine, CMEA, or a mixture thereof which may optionally make up from 0.06 to 0.75% or from 0.1 to 0.65% or from 0.2 to 0.55% by weight of the biphasic composition made via the 15 present invention.
  • the compositions of the present invention will have no (0.0% by weight) nonionic surfactant.
  • cationic surfactants may optionally be used in the biphasic composition of the present invention.
  • One class of optional cationic surfactants includes heterocyclic ammonium salts such as cetyl or stearyl pyridinium chloride, alkyl amidoethyl pyrrylinodium methyl sulfate, and lapyrium chloride. Tetra alkyl ammonium salts are another useful class of cationic surfactants suitable for optional u se.
  • Examples include cetyl or stearyl trimethyl ammonium chloride or bromide; hydrogenated palm 25 or tallow trimethylammonium halides; behenyl trimethyl ammonium halides or methyl sulfates; decyl isononyl dimethyl ammonium halides; ditallow (or distearyl) dimethyl ammonium halides, and behenyl dimethyl ammonium chloride.
  • Still other types of cationic surfactants that may be used are the various ethoxylated quaternary 30 amines and ester quats.
  • Examples include PEG-5 stearyl ammonium lactate (e.g., Genamin KSL manufactured by Clariant), PEG-2 coco ammonium chloride, PEG-15 hydrogenated tallow P0000704EP (CPL) 22 ammonium chloride, PEG 15 stearyl ammonium chloride, dipalmitoyl ethyl methyl ammonium chloride, dipalmitoyl hydroxyethyl methyl sulfate, and strearyl amidopropyl dimethylamine lactate.
  • PEG-5 stearyl ammonium lactate e.g., Genamin KSL manufactured by Clariant
  • PEG-2 coco ammonium chloride e.g., PEG-2 coco ammonium chloride
  • PEG-15 hydrogenated tallow P0000704EP (CPL) 22 ammonium chloride PEG 15 stearyl ammonium chloride
  • dipalmitoyl ethyl methyl ammonium chloride dipalmitoyl
  • E ven other useful cationic surfactants suitable for optional use include quaternized hydrolysates of 5 silk, wheat, and keratin proteins, and it is within the scope of the invention to use mixtures of the aforementioned cationic surfactants.
  • cationic surfactants will make up no more than 2% by weight of the biphasic composition. If present, cationic surfactants will typically make up from 0.01 to 0.5%, and more typically, from 0.1 to 0.3% by weight of the composition. In another embodiment, the biphasic composition of the 10 present invention have no (0.0% by weight) cationic surfactant.
  • W ater makes up from 8 to 40%, and preferably, from 10 to 35%, and most preferably, from 9 to 32% (or 9 to 30% or 10 to 28% or 11 to 27%) by weight of the biphasic composition.
  • suitable oils that may be included are any of those which may be topically applied like silicone oils and/or mineral oil, but preferably oils that are naturally sourced 15 and sustainable, and mono-, di-, and especially, triglycerides.
  • the biphasic composition of the p resent invention is preferably substantially free of silicone oil, if optionally used the same can include, for example, PEG-3 dimethicone, PEG-8 dimethicone, PEG-9 dimethicone, PEG-10 dimethicone, PEG-11 methyl ether dimethicone, PEG-12 dimethicone, PEG-14 dimethicone, PEG- 17 dimethicone, PEG-32 dimethicone mixtures thereof or the like.
  • the oil comprises sunflower oil, moringa oil, soybean oil or a mixture thereof.
  • the oil used is from 55 to 100%, or from P0000704EP (CPL) 23 70 to 100% or from 85 to 100% (or 85 to 98% or 90 to 98%) by weight of plant derived triglyceride.
  • the oil used is at least 40% by weight, and preferably, at least 45%, and most preferably, 48% to 68% by weight monounsaturated and/or from 10% to 30%, or 12% to 28%, or from 15% to 25% by weight polyunsaturated.
  • the oil selected for use comprises a mixture of oils where at least 50% by weight, and preferably, at least 75% to 99.9% by weight (or from 80 to 95% or from 85 to 92% or from 82 to 90% by weight of the oil used is soybean or sunflower oil or s m ixture thereof (liquids at 25oC) based on total weight of the oil in the oil phase.
  • the oil used is all (100% by weight based on total weight of the oil) soybean o il or sunflower oil or moringa oil.
  • the oil selected for use is isododecane, isohexadecane or a mixture thereof.
  • the oil used will be evenly or homogenously dispersed in the aqueous phase within the transient emulsion (in view of the surfactants used) and/or will not be solubilized, having a droplet size from 1 to 500 microns, and preferably, from 2 to 200 microns, and most preferably, from 2 to 60 microns (or from 2 to 30 microns or from 2 to 20 microns or from 2 to 10 microns) in the t ransient emulsion where droplet size may be taken with a particle size analyzer, like a 20 commercially available Malvern MS3000 Analyzer or visually by viewing and measuring droplets with a commercially available optical microscope.
  • a particle size analyzer like a 20 commercially available Malvern MS3000 Analyzer or visually by viewing and measuring droplets with a commercially available optical microscope.
  • the oil phase can optionally have added thereto occlusive that is a semi-solid at 22°C, like petroleum jelly, CAS No.8009-03-08, whereby such occlusive is a combination of hydrocarbons mainly having carbon chains longer than 25.
  • occlusive is a combination of hydrocarbons mainly having carbon chains longer than 25.
  • Petroleum jelly therefore, is characterized as a composition made predominately of the paraffin series that can be obtained by, for example, dewaxing lubricating oil stock (or crude oil refining) whereby the same melts at temperatures from 35 to 72oC (more often 40 to 70oC) and boils at a temperature of 285oC or higher and often at a temperature between 295 and 325oC.
  • Such occlusive is characterized as a semi-solid that spreads well topically at skin’s natural temperature 30 of 33 to 37oC.
  • Free of polycyclic aromatics the most well-known and best produced petroleum jelly is sold under the brand name Vaseline®.
  • Vaseline® Free of polycyclic aromatics, the most well-known and best produced petroleum jelly is sold under the brand name Vaseline®.
  • petroleum jelly and petrolatum P0000704EP (CPL) 24 are meant to be the same.
  • Semi-solid as used herein, means soft like Vaseline®, not pourable at room temperature but spreadable on skin at room temperature.
  • Other materials suitable as semi-solid occlusive for optional addition include those made to mimic petroleum jelly (“petroleum jelly substitute” or “substitute”) but are not derived from petroleum or 5 any biproduct or residue recovered from the processing of the same such as processing for gas production.
  • Such a petroleum jelly substitute suitable for use can be a vegetable-based substitute comprising, f or example, triglycerides, castor oil, glycerin, caprylic/capric triglyceride, polyglyceryl ricinoleate, 10 coconut oil, sunflower seed oil, safflower oil, cottonseed oil, olive oil, mixtures thereof or the like.
  • Other options include the occlusives described in WO 22150812 A1, WO 22150813 A1, WO 22150814 A1, WO 221150815 A1, U.S. Patent No.8,524,211.
  • occlusive suitable for use is sold under the name BOTANIJELLY TM and made commercially available by Cargill (INCI hydrogenated vegetable glycerides).
  • Other available 15 occlusives that may be used as occlusive include those sold commercially by Sonneborn under the S onneNaturalTM name and including the J-207, NXG, and PF-1 varieties.
  • occlusive of the soft-solid type makes up from 0.5 to 10% or from 1 to 8% or from 2 to 7 % or from 3 to 7% by weight of the total weight of the oil phase used in the biphasic composition.
  • occlusive of the soft-solid type when occlusive of the soft-solid type is used, the same will, in 20 the compositions of the invention, have a droplet size consistent with the droplet sizes defined herein for the oils used that are liquid at 25oC.
  • the occlusive may be solubilized.
  • occlusive of the soft-solid type may be added to the aqueous phase in a nanoemulsion, thus delivering occlusive of the soft-solid type with an oil droplet size from 2 nm to 25 600 nm, and preferably, from 4 to 200 nm or from 5 to 100 nm or from 8 to 25 nm.
  • used oil p resent in the aqueous phase as nano-droplets ranges from 1.5 to 8.5% by weight of the aqueous phase, and preferably, from 2 to 7.5%, or from 2 to 7%, and most preferably, from 3 to 6.5% or from 3.5 to 6% or from 3.8 to 5.7% or from 3.8 to 5.5% by weight of the aqueous phase.
  • the aqueous phase and oil phase 30 are combined at a weight ratio (aqueous phase : oil phase) of 2:1 to 1:2, or from 1.9:1.1 to 1:1 to 1.9, or from 1.75:1 to 1:1.75 or from 1.5:1 to 1:1.5 or from 1.35:1 to 1:1.35 or from 1.25:1 to 1:1.25 or P0000704EP (CPL) 25 from 1.15:1 to 1:1.15 or from 1:1.
  • a weight ratio aqueous phase : oil phase
  • the biphasic composition is typically provided in a transparent of translucent package, preferably transparent bottles, including those which are glass 5 or plastic (e.g., those comprising polyethylene terephthalate as well as such with post-consumer resin and bottles which are bispenol-A free).
  • a transparent of translucent package preferably transparent bottles, including those which are glass 5 or plastic (e.g., those comprising polyethylene terephthalate as well as such with post-consumer resin and bottles which are bispenol-A free).
  • the transient emulsion is homogeneous after applying shear and reverts back to being b iphasic in a time period from 3 minutes to 1 day, or from 4 minutes to 5 hours or from 5 minutes to 2 hours or from 5 minutes to 1 hour or from 5 to 30 minutes, or from 7 to 25 minutes or in 8 to 20 minutes 10 (or 8.5 to 18 minutes or 9.5 to 17 minutes).
  • the transient emulsion begins to separate in 4.5 minutes and reverts back to 2 phases within 1 day from the time the composition begins to separate.
  • the amount of aqueous phase and oil phase used (in terms of weight percent of each) in the biphasic composition a is where the weight percent of both phases are within 15% or within 10% or within 5% or within 2% 15 of each other, or equal to each other.
  • a water-soluble ingredient ‘WS” makes up 5% by weight of the biphasic composition and the biphasic composition is a 50/50 ratio of the aqueous and oil phases, then WS is present in the aqueous phase at 10% by weight.
  • P reservatives can desirably be incorporated into the aqueous phase used in the invention to protect against the growth of potentially harmful microorganisms.
  • Cosmetic chemists are familiar 20 with appropriate preservatives and routinely choose them to satisfy the preservative challenge test and to provide product stability. Suitable traditional preservatives for use include propionate salts.
  • Suitable preservatives are iodopropynyl butyl carbamate, phenoxyethanol, sodium benzoate, hydroxyacetophenone, ethylhexylglycerine, hexylene glycol, methyl paraben, propyl paraben, imidazolidinyl urea, sodium dehydroacetate, dimethyl-dimethyl (DMDM) hydantoin, benzyl alcohol 25 and mixtures thereof.
  • Other preservatives suitable for use include sodium dehydroacetate, chlorophenesin and decylene glycol. Preservatives are preferably employed in amounts ranging from 0.08 to 2.6% by weight of the total weight of the aqueous phase.
  • a preservative system with hydroxyacetophenone alone or in a mixture with other preservatives is also preferred.
  • Standard emollients like vicinal diols (e.g., 1,2-hexane diol and/or 1,2-octane diol), may be used 30 with the preservatives.
  • the preservative used is sodium benzoate.
  • the preservative used is Galguard® (phenoxyethanol, benzoic acid, capryloyl glycine, undecylenoyl glycine) made available from Galaxy.
  • the preservative used comprises collectively in total less than 25% by weight, and P0000704EP (CPL) 26 preferably, less than 15% by weight methylchloroisothiazolinone and methylisothiazolinone based on total weight of the preservative used.
  • CPL P0000704EP
  • no methylchloroisothiazolinone and methylisothiazolinone are used in the compositions of the present invention.
  • the preservative used is preferably substantially free of parabens and 5 hydantoins, and most preferably, the preservative has no paraben and no hydantoin.
  • the preservative used is sodium benzoate.
  • Inorganic salt i.e., electrolyte
  • Typical salts may be used like NaCl, KCl, MgCl 2 , CaCl 2, mixtures thereof or the like.
  • S uch inorganic salt makes up from 0.2 to 2.5%, and preferably, from 0.25 to 2%, and most 10 preferably, from 0.3 to 1.75% (or from 0.3 to 1.5% or from 0.4 to 1.5%) by weight of the biphasic composition.
  • T he pH of the compositions (aqueous phase and end use) is as herein defined from greater than 5.75 to 8.5. Adjusters for pH consistency are suitable for use.
  • Such pH adjusters include amino m ethyl propanol, triethylamine, triethanolamine, ammonium, arginine, diisopropanolamine, 15 triisopropanolamine, NaOH, KOH, H 2 SO 4 , HCl, C 6 H 8 O 7 (i.e., citric acid) or mixtures thereof.
  • the pH adjusters are added at amounts to yield the desired final pH.
  • the pH values may be assessed with commercial instrumentation such as a pH meter made commercially available from Thermo Scientific®.
  • such adjusters make up from 0.5 to 2.5%, and preferably, from 0.7 to 2%, and most preferably, from 0.9 to 1.7% (or from 1 to 1.5% or from 1 to 1.3%) by weight of the 20 aqueous phase.
  • S compturants may optionally be used for aiding in structuring of the end use composition (transient emulsion).
  • Illustrative examples of such components include C 8 to C 18 , and preferably, C 10 to C 16 , and most preferably, C12 to C14 fatty acids, fatty alcohols, fatty amides or mixtures thereof.
  • such a component is lauric acid, myristic acid, palmitic acid, stearic acid or a mixture 25 thereof where the hydrophobic portion of such can be unsaturated but typically with no more than one double bond.
  • structuring components if used, make up from 0.001 to 8%, and preferably, from 0.5 to 4%, and most preferably, from 0.7 to 3.8% or from 0.8 to 3% or from 1 to 5% by weight of the aqueous phase (often from 2 to 3% by weight of the biphasic composition).
  • a fatty alcohol like lauryl alcohol, myristyl alcohol, palmityl alcohol or a mixture thereof may be used.
  • a fatty alcohol may be used with a fatty acid like lauric acid where the mixture of fatty alcohol and fatty acid is from 45 to 80%, and preferably, from 50 to 75%, and most preferably, from 52 to 72% or from 62 to 72% or from 65 to 70% by weight fatty alcohol based on total weight of P0000704EP (CPL) 27 structurant (i.e., fatty alcohol and fatty acid) in the aqueous phase.
  • CPL P0000704EP
  • the structurant when used, can aid in the transient emulsion having lamellar wash composition c haracteristics where lamellar means the packing of molecules with polar heads and non-polar tails as bilayer sheets separated by a polar liquid like water.
  • 5 Antioxidants are suitable for optional use. When used, they typically make up from 0.2 to 2% or from 0.3 to 1.6% or from 0.4 to 1.25% by weight of the biphasic composition.
  • the antioxidants suitable for use c an be water or oil soluble. Illustrative water-soluble antioxidants that may be used include Vitamin C, uric acid, glutathione, a mixture thereof or the like.
  • Fat soluble antioxidants include Vitamin E (and its 10 derivatives), lycopene, carotene, coenzyme Q10, mixtures thereof or the or the like.
  • Other suitable o ptions include, Tinogard® TL, Tinogard® TT or the like.
  • Optional skin benefit agents are suitable for use in this invention, and they are limited only to the extent that the agents are capable of being topically applied via a wash composition.
  • Illustrative examples of the water-soluble benefit agents suitable to include in the aqueous pase are vitamin B2, niacinamide (vitamin B3), vitamin B6, vitamin C, mixtures thereof or the like. Water soluble derivatives of such vitamins may also be employed.
  • vitamin C derivatives such as ascorbyl tetraisopalmitate, magnesium ascorbyl phosphate and ascorbyl glycoside may be used alone or in combination with each other.
  • Other water-soluble benefit agents suitable for use 20 include 4-ethyl resorcinol, extracts like sage, aloe vera, green tea, grapeseed, thyme, chamomile, yarrow, cucumber, liquorice, rosemary extract or mixtures thereof. Water soluble sunscreens like ensulizole may also be used.
  • water soluble active suitable for use includes at least one of S-adenosyl-L- methionine, a 1-alkyl nicotinamide having structure X, and a methionine having structure XI: 25 X or XI P0000704EP (CPL) 28 wherein R c is a C 1-4 alkyl, preferably, methyl (N-methyl nicotinamide) and X- is a negative counter ion, preferably, Cl-, R d is methyl, ethyl, propyl, hydroxymethyl, 2-hydroxyethyl, preferably, methyl and R e is H, methyl, ethyl, isopropyl, preferably, H (N-acetyl methionine).
  • CPL XI P0000704EP
  • Such components are described in WO/2021/008824A1. If used, from 0.0001 to 10% or from 0.001 to 8%, and most 5 preferably, from 0.01 to 5% or from 0.01 to 3% or from 0.01 to 2% or from 0.01 to 1% by weight of each of such ingredients, independently, may be used alone or in a combination thereof in the biphasic composition. In another embodiment, any of such ingredients may optionally be used with from 0.01 to 4%, or from 0.01 to 2% or from 0.01 to 1% or from 0.1 to 0.8% by weight niacinamide or 12-hydroxystearic acid or both, based on total weight of the biphasic composition.
  • the biphasic composition may comprise acetyl cysteine at from 0.001 to 1.8% by weight of the biphasic composition.
  • the total amount of optional water-soluble benefit agents (including mixtures) that may be u sed in the present invention may range from 0.001 to 10%, and preferably, from 0.001 to 8%, and most preferably, from 0.01 to 6% by weight, based on total weight of the biphasic 15 composition.
  • oil i.e., non-water
  • the oil soluble actives or benefit agents are solubilized or carried in the oil phase of the present invention.
  • sunscreens like ethylhexylmethoxycinnamate, bis-ethyl hexyloxyphenol methoxyphenol triazine, 2-ethylhexyl-2-cyano-3,3-diphenyl-2-propanoic acid, drometrizole trisi
  • oil soluble benefit agents suitable for use include resorcinols like 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexyl resorcinol 4-isopropyl resorcinol or a mixture thereof.
  • resorcinols like 4-hexyl resorcinol, 4-phenylethyl resorcinol, 4-cyclopentyl resorcinol, 4-cyclohexyl resorcinol 4-isopropyl resorcinol or a mixture thereof.
  • 5-substituted resorcinols like 4-cyclohexyl-5-methylbenzene-1,3-diol, 4- isopropyl-5-methylbenzene-1,3-diol, mixtures thereof or the like may be used.
  • oil soluble actives suitable for use include omega-3 fatty acids, omega-6 fatty acids, climbazole, farnesol, ursolic acid, myristic acid, geranyl geraniol, oleyl betaine, cocoyl hydroxyethyl imidazoline, hexanoyl sphingosine, 12-hydroxystearic acid, petroselinic acid, conjugated linoleic acid, terpineol, thymol mixtures thereof or the like.
  • the optional oil soluble benefit agent used is a retinoic acid precursor.
  • the retinoic acid precursor is retinol, retinal, retinyl propionate, retinyl palmitate, retinyl acetate or a mixture thereof.
  • Retinyl propionate, retinyl palmitate and mixtures thereof are typically preferred.
  • 12-hydroxystearic acid is often preferred for use. 10
  • the same or mixtures of actives typically makes up from 0.0 to 3.5%, and preferably, from 0.001 to 2.5%, and most preferably, from 0.05 to 2 % (or from 0.5 to 1.6%) by weight of the end use composition (i.e. transient emulsion).
  • Fragrances, fixatives, chelators (like EDTA or tetrasodium glutamate diacetate) and exfoliants may optionally be included in the compositions of the present invention.
  • Each of these substances may 15 range from about 0.03 to about 5%, preferably between 0.1 and 3% by weight of the total weight of the end use composition.
  • exfoliants those selected should be of small enough particle size so that they do not impede the performance of any packaging used to dispense the compositions of this invention.
  • Conventional emulsifiers having an HLB of greater than 8 may optionally be used.
  • Illustrative 20 examples include Tween, 40, 60, 80, polysorbate 20 and mixtures thereof.
  • biphasic wash composition comprises from 0.01 to 4.5%, or from 0.02 to 4%, or from 0.03 to 3.5% by weight of at least one of glycerol, palmitic acid, 12- hydroxystearic acid, caffeine, stearic acid, mandelic acid, hyaluronic acid, salicylic acid, ceramides, 25 sphingosine, thiamidol, honokiol, thymol, terpineol, conjugated linoleic acid, niacinamide, glycolic acid, lactic acid, benzalkonium chloride, cetrimonium chloride, benzoyl peroxide, vitamin E, benzyl a lcohol, citric acid, aloe barbadensis leaf juice, or a mixture thereof.
  • the biphasic wash composition does comprise palmitic acid, glycerol, and at least one of stearic acid and 12 hydroxystearic acid.
  • the biphasic wash 30 composition comprises from 0.5 to 3% or from 0.8 to 2.8% or from 1to 2% by weight 12- h ydroxystearic acid, whereby the aqueous phase and oil phase are transparent and when the two P0000704EP (CPL) 30 p hases exist, surprisingly, at least 80% or at 85% or from 90 to 100% or from 92 to 98% by weight of the total weight of 12-hydroxystearic acid used is present in the aqueous phase.
  • CPL P0000704EP
  • the desired ingredients may be mixed with conventional apparatus under moderate shear and atmospheric conditions, with 5 temperature being from 30 to 80°C. Moderate shear such as shaking (or stirring) in a conventional m ixer will yield the desired phases where shear stops when the phase being made is homogeneous.
  • Moderate shear such as shaking (or stirring) in a conventional m ixer will yield the desired phases where shear stops when the phase being made is homogeneous.
  • the Examples provided are to facilitate an understanding of the invention. They are not intended to limit the scope of the claims. 10 Examples Biphasic wash compositions consistent with this invention and controls were prepared and assessed. All Samples were prepared by combining the ingredients identified below in the Table and all ingredients were mixed with moderate shear under atmospheric conditions at a temperature from about 35 to 75°C. The phases made consistent with the invention were stable, displayed no 15 color change or syneresis.
  • aqueous phase, oil phase or both were thick, not transparent or translucent and/or u nstable with flocculant or precipitate appearing. Subsequent to applying shear, it was not possible to obtain a homogeneous transient emulsion with characteristics suitable for consumer acceptance. 10 All other Samples were made according to the invention. The phases mixed well with less than 1.5 minutes of agitation. Skilled panelists concluded the resulting transient emulsions provided excellent sensory characteristics upon use. With 50% by weight oil in such emulsions unexpectedly delivered excellent lather characteristics, lather consistent with compositions having less than 10% by weight oil.

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Abstract

L'invention se réfère à une composition de lavage biphasique. La composition est sensiblement exempte de tensioactifs à base de sulfate. Les tensioactifs utilisés comprennent un tensioactif à base de saccharide anionique et un tensioactif amphotère et/ou un tensioactif zwitterionique. La composition de lavage biphasique avec agitation produit une émulsion transitoire qui est une composition de lavage conférant des avantages de mousse et d'hydratation, même lorsqu'elle comprend au moins 30% en poids d'huile.
PCT/EP2025/052646 2024-02-06 2025-02-03 Composition de lavage biphasique Pending WO2025168475A1 (fr)

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