US20100266516A1 - Personal care composition - Google Patents

Personal care composition Download PDF

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US20100266516A1
US20100266516A1 US12/742,834 US74283408A US2010266516A1 US 20100266516 A1 US20100266516 A1 US 20100266516A1 US 74283408 A US74283408 A US 74283408A US 2010266516 A1 US2010266516 A1 US 2010266516A1
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composition
alkyl group
present
sodium
amount
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Philip Cotrell
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Innospec Ltd
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Innospec Ltd
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Assigned to INNOSPEC LIMITED reassignment INNOSPEC LIMITED U.S. PATENT APPLICATION SERIAL NO.: 12/742,834 Assignors: COTRELL, PHILIP
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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
    • A61K8/18—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
    • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
    • 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
    • A61K8/0295—Liquid crystals
    • 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
    • A61K8/442—Aminocarboxylic acids or derivatives thereof, e.g. aminocarboxylic acids containing sulfur; Salts; Esters or N-acylated derivatives thereof substituted by amido group(s)
    • 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
    • A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00—Drugs for dermatological disorders
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/02—Preparations for cleaning the hair
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/12—Preparations containing hair conditioners
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/02—Anionic compounds
    • C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
    • C11D1/123—Sulfonic acids or sulfuric acid esters; Salts thereof derived from carboxylic acids, e.g. sulfosuccinates
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/88—Ampholytes; Electroneutral compounds
    • C11D1/94—Mixtures with anionic, cationic or non-ionic compounds

Definitions

  • This invention relates to a personal care composition, for example a liquid or gel body wash, shower gel, handwash, skin cream, hair conditioner or moisturiser.
  • a personal care composition for example a liquid or gel body wash, shower gel, handwash, skin cream, hair conditioner or moisturiser.
  • U.S. Pat. No. 5,612,307 discloses an aqueous liquid cleansing and moisturising composition comprising: a) a surface active agent selected from anionic, nonionic, zwitterionic and cationic, surface active agents, soap and mixtures thereof; and b) a benefit agent;
  • the benefit agent and surface active agent are separate but combinedly dispensable from a single packaging means in a predetermined ratio as discrete domains, the domains having one dimension of at least about 1000 microns.
  • An advantage of the invention of U.S. Pat. No. 5,612,307 is said to be that it leads to improved deposition of benefit agents from a surface active agent containing aqueous liquid composition during use.
  • the surface active agent and benefit agent are separated in the composition, i.e. they do not directly contact one another in the composition. This avoids adverse interactions which may occur between these two components and which may result in ineffective deposition of the benefit agent.
  • composition of U.S. Pat. No. 5,612,307 is said to be suitable for cleansing and “moisturising”, “conditioning” or “protection” of the skin.
  • the benefit agent is included in the composition to moisturise, condition and/or protect the skin.
  • “benefit agent” is meant a substance that softens the skin (stratum corneum) and keeps it soft by retarding the decrease of its water content and/or protects the skin.
  • Preferred benefit agents of U.S. Pat. No. 5,612,307 include: silicones and siloxanes; fats and oils; waxes; hydrocarbons; higher fatty acids; higher alcohols; esters; essential oils; lipids; vitamins; sunscreens; and phospholipids.
  • the surface active agent of U.S. Pat. No. 5,612,307 is preferably present at a level of from 1 to 35 wt %, preferably 3 to 30 wt %.
  • One preferred anionic detergent for use in the invention of U.S. Pat. No. 5,612,307 is a fatty acyl ethane sulfonate of formula RCO 2 CH 2 CH 2 SO 3 M, where R is an alkyl or alkenyl group of 7 to 21 carbon atoms and M is a solubilising cation such as sodium, potassium, ammonium or substituted ammonium.
  • RCO 2 CH 2 CH 2 SO 3 M is a solubilising cation such as sodium, potassium, ammonium or substituted ammonium.
  • Preferably at least three quarters of the RCO groups have 12 to 18 carbon atoms and may be derived from coconut, palm or a coconut/palm blend.
  • the composition includes from 0.5 to 15 wt % of a cosurfactant agent with skin-mildness benefits.
  • Suitable materials are zwitterionic detergents identified in U.S. Pat. No. 5,612,307.
  • SCI sodium cocyl isethionate
  • the present invention is based on the use of a different fatty acyl sulfonate salt, and its advantageous co-formulation with amphoteric or zwitterionic surfactants, in aqueous environments.
  • an aqueous shear-thinning personal care composition comprising:
  • R 1 represents a C 8-22 alkyl group
  • R 2 represents a C 1-4 alkyl group
  • each of R 3 , R 4 and R 5 independently represents a hydrogen atom or a C 1-4 alkyl group
  • M + represents a cation
  • compositions There may be further components present in the composition. Percentages given herein are percentages on total weight of the composition, including any such further components, for example when there is a plurality of compounds (a); and/or a plurality of surfactants (b).
  • compositions of the present invention have an exceptional ability to be formulated with further components and in particular to suspend particles or droplets and we regard this as an essential element of the invention.
  • R 1 represents a C 10-20 alkyl group, most preferably a C 12-18 alkyl group.
  • R 2 represents a C 1-4 alkyl group in which a propyl or butyl group is straight-chain.
  • R 2 represents an n-propyl, ethyl or, most preferably, a methyl group.
  • R 3 represents a hydrogen atom.
  • R 4 and R 5 represents a hydrogen atom and the other represents a hydrogen atom or a C 1-4 alkyl group
  • R 4 and R 5 represents a hydrogen atom or a C 1-4 alkyl group in which a propyl or butyl group is straight-chain.
  • one of R 4 and R 5 represents an n-propyl, ethyl or methyl group or, most preferably, a hydrogen atom.
  • R 4 and R 5 represent hydrogen atoms.
  • M + represents an ammonium cation or, most preferably, a metal cation.
  • Suitable metal cations include alkali metal cations, for example sodium and potassium cations, and alkaline earth metal cations, for example calcium and magnesium cations.
  • M + represents a potassium cation, or, especially, a sodium cation.
  • Component (b) may include amphoteric or zwitterionic surfactants selected from betaines, for example alkyl betaines, alkylamidopropyl betaines, alkyamidopropyl hydroxy sultaines, alkylampho acetates, alkylamphodi-acetates, alkylamphopropionates, alkylamphodipropionates, alkyliminodipropionates and alkyliminodiacetate.
  • betaines for example alkyl betaines, alkylamidopropyl betaines, alkyamidopropyl hydroxy sultaines, alkylampho acetates, alkylamphodi-acetates, alkylamphopropionates, alkylamphodipropionates, alkyliminodipropionates and alkyliminodiacetate.
  • surfactants (b) may be present.
  • Amphoteric or zwitterionic surfactants may include those which have an alkyl or alkenyl group of 7 to 22 carbon atoms and comply with an overall structural formula:
  • R 1 is alkyl or alkenyl of 7 to 22 carbon atoms
  • R 2 and R 3 are each independently alkyl, hydroxyalkyl or carboxyalkyl of 1 to 6 carbon atoms
  • m is 2 to 4
  • n is 0 or 1
  • X is alkylene of 1 to 6 carbon atoms optionally substituted with hydroxyl
  • Y is —CO 2 or —SO 3 .
  • Amphoteric or zwitterionic surfactants may include simple betaines of formula:
  • R 1 , R 2 and R 3 are as defined previously.
  • R 1 may, in particular, be a mixture of C 12 and C 14 alkyl groups derived from coconut so that at least half, preferably at least three quarters, of the groups R 1 has 10 to 14 carbon atoms.
  • R 2 and R 3 are preferably methyl.
  • Amphoteric or zwitterionic surfactants may include sulphobetaines of formula:
  • Amphoteric or zwitterionic surfactants may include amphoacetates and diamphoacetates.
  • Amphoacetates generally conform to the following formula:
  • Diamphoacetates generally conform to the following formula:
  • R is an aliphatic group of 8 to 22 carbon atoms and M is a cation such as sodium, potassium, ammonium, or substituted ammonium.
  • Compounds such as oleylbetaine and cocoamidopropylhydroxy-sultaine are regarded as very safe for the human body and for the eyes. Also preferred in some embodiments are sodium lauroamphoacetate, sodium cocoamphoactetate, disodium lauroamphoacetate, and disodium cocoampho-diacetate.
  • component (a) is present in an amount of up to 30% by total composition weight.
  • component (b) is present in an amount of up to 30% by total composition weight.
  • component (c) is present in an amount of from 20% to 95% by total composition weight, preferably from 50 to 90%.
  • composition of the present invention is a free-flowing liquid.
  • a composition in accordance with the invention is a shear thinning composition.
  • a composition in accordance with the present invention may suitably have a viscosity of from 250 to 300,000 mPa ⁇ s, measured at 25° C. using a Brookfield rotational viscometer equipped with an appropriate spindle at a rotation speed of from 0.1 revolutions per minute (rpm) to about 60 rpm.
  • appropriate spindles include the Brookfield RVT Viscometer Helipath T-Bar Spindles B and C (used in the examples which follow). At low shear rates (rotation speeds) the viscosity as measured may be up to 300,000 mPa ⁇ s. At high shear rates (rotation speeds) the viscosity as measured may be as low as 250 mPa ⁇ s.
  • compositions of the invention may be pourable liquids or semi-liquids e.g.
  • compositions of the invention may be soft gels and may suitably be of viscosity in the range 800 to 20,000 mPa ⁇ s, measured under the conditions stated above.
  • compositions of the invention may be firmer gels and may be of viscosity in the range 3000 to 100,000 mPa ⁇ s, measured under the conditions stated above.
  • the aqueous compositions of the invention have desirable non-Newtonian properties and excellent suspending properties, being capable of maintaining solid or non-solid water-insoluble particles or droplets in suspension. Under the conditions of testing which have been applied in relation to the invention, no sedimentation or separation whatsoever of the water-insoluble particles or droplets has developed over time. Furthermore the compositions of the invention produce an excellent rich creamy foam which is stable, and is mild to the skin and eyes.
  • compositions of the present invention are believed to exhibit a so-called lamellar phase structure comprising spherulites in suspension.
  • lamellar phase is intended a hydrated solid phase or a liquid crystal phase in which several double layers are arranged in a parallel network, separated by layers of water or of an aqueous solution.
  • these are multilamellar vesicles comprising several layers of surface-active agents arranged concentrically and generally ranging from 0.1 to 50 microns in size.
  • the corresponding phase structure may, we believe, be a birefringent solution, optically characteristic of a non-isotropic mesomorphic phase.
  • water-insoluble particles are intended solid or non-solid entities which are not solubilized in the aqueous medium of the subject composition. These, more particularly, are solid particles or suspended droplets.
  • compositions of the invention are hydrolytically stable and pH-stable, and that they can be formulated with many further ingredients, including particulates and droplets, without adverse interactions being found.
  • the composition may contain an electrolyte.
  • An electrolyte is suitably present in an amount of from 0.5% to 25%, preferably 1% to 15%, preferably 2 to 10%, by total composition weight. The concentration thereof may be adjusted to produce the desired formulation.
  • ionic compounds for example metal salts selected from sodium chloride, sodium sulfate, potassium chloride, potassium sulfate, sodium phosphate, disodium phosphate, potassium phosphate, dipotassium phosphate, sodium isethionate, sodium methyl isethionate and sodium lactate; and non-metallic salts, for example sodium citrate, ammonium chloride, ammonium citrate and ammonium lactate.
  • metal salts selected from sodium chloride, sodium sulfate, potassium chloride, potassium sulfate, sodium phosphate, disodium phosphate, potassium phosphate, dipotassium phosphate, sodium isethionate, sodium methyl isethionate and sodium lactate
  • non-metallic salts for example sodium citrate, ammonium chloride, ammonium citrate and ammonium lactate.
  • Preferred electrolytes include sodium and ammonium chloride.
  • Said additional component (d) is suitably one or more benefit agents in the form of particles or droplets.
  • a “benefit agent” we can adopt the definition of US 2003/0180246A, that is, a “benefit agent” is any active ingredient that is to be delivered into the skin or hair, or onto the skin or hair, or both, at a desired location.
  • a benefit agent may be a substance that softens the skin (stratum corneum) and keeps it soft by retarding the decrease of its water content; and/or a substance which protects the skin; and/or an exfoliating material, for example a water insoluble particulate or suspended abrasive.
  • Preferred benefit agents include:
  • Suitable benefit agents include: depigmentation agents; reflectants; UV absorbers, thickening agents; detangling/wet combing agents; film forming polymers; humectants; amino acids and their derivatives; antimicrobial agents; anti-acne agents; anti-aging agents; antiseptics; analgesics; local anesthetics; anti-hair loss agents; hair growth inhibitor agents; inflammation inhibitors; proteins; deodorants and anti-perspirants; agents for treatment of dandruff, seborreheic dermatitis and psoriasis; skin emollients and skin moisturizers; hair conditioners; hair softeners; hair moisturizers; vitamins; tanning agents; skin lightening agents; antifungals such as antifungals for foot preparations; depilating agents; counterirritants; hemorrhoidals; insecticides; pigments or opacifying agents, moisturizing beads, natural abrasives, synthetic abrasives such as polyoxyethylene beads,
  • Suitable reflectants include mica, alumina, calcium silicate, glycol dioleate, glycol distearate, silica, sodium magnesium fluorosilicate, and mixtures thereof.
  • UV absorbers examples include benzophenone, bornelone, PABA (Para Amino Benzoic Acid), butyl PABA, cinnamidopropyl trimethyl ammonium chloride, disodium distyrylbiphenyl disulfonate, potassium methoxycinnamate, and mixtures thereof.
  • the benefit agent (or benefit agents, in total) is preferably present in amount of from 0.1 to 50%, preferably from 1 to 40%, preferably from 1.5 to 30%, and most preferably from 2 to 20% by weight based on the composition weight.
  • a structurant may be added to the phase comprising the surface active agent, suitably in an amount of from 0.01%, preferably from 0.1%, more preferably from 1%, by weight based on the composition weight.
  • a structurant may be added to the phase comprising the surface active agent, suitably in an amount of up to 15%, preferably up to 12%, more preferably up to 10%, and most preferably up to 5%, by weight based on the composition weight.
  • a structurant The primary purpose of a structurant is to assist in the formation of a lamellar phase. It is believed that a lamellar phase, if achieved, may enable the compositions to suspend particles more readily while still maintaining good shear thinning properties. The lamellar phase also provides consumers with desired rheology (“heaping”).
  • Suitable structurants include swelling clays, for example laponite; fatty acids and derivatives thereof, in particular, fatty acid esters; cross-linked polyacrylates such as CarbopolTM (polymers available from Goodrich); acrylates and copolymers thereof; polyvinylpyrrolidone and copolymers thereof; polyethylene imines; salts such as sodium chloride and ammonium sulphate; sucrose esters; gellants; and mixtures thereof.
  • fatty acids which may be used are C 10 -C 22 acid (e.g.
  • Ester derivatives include propylene glycol isostearate, propylene glycol oleate, glyceryl isostearate, glyceryl oleate and polyglyceryl diisostearate.
  • Monoglyceride polyglycol ethers are suitable structurants.
  • Suitable electrolytes include alkali and alkaline earth salts such as halides, ammonium salts and sulphates.
  • the surface active agent phase may also comprise a thickening agent, ie a material which maintains the viscosity of this phase as the shear rate thereof is increased during use.
  • Suitable materials include cross-linked polyacrylates such as CarbopolTM (polymers available from Goodrich); natural gums including alginates, guar, xanthan and polysaccharide derivatives including carboxy methyl cellulose and hydroxypropyl guar; propylene glycols and propylene glycol oleates; salts such as sodium chloride and ammonium sulphate; glycerol tallowates; and mixtures thereof.
  • CarbopolTM polymers available from Goodrich
  • natural gums including alginates, guar, xanthan and polysaccharide derivatives including carboxy methyl cellulose and hydroxypropyl guar
  • propylene glycols and propylene glycol oleates propylene glycols and propylene glycol oleates
  • salts such
  • Thickeners may also be added to the benefit agent in order to achieve the required viscosity during use.
  • Preferred thickeners for the benefit agent include fumed silica; polyethylene; alkyl silicone waxes; aluminium silicate; lanesterol; natural and synthetic waxes; fatty acids and derivatives thereof, in particular, fatty acid monoglyceride polyglycol ethers; higher fatty alcohols; petrolatum; narogel; polyammonium stearate; hydrotalcites; and mixtures thereof.
  • Hydrotalcites are materials of general formula
  • M is a divalent metal ion e.g. Mg 2 ⁇
  • N is a trivalent metal ion e.g. Al 3+
  • X is an exchangeable anion e.g CO 3 ⁇ , NO 3 ⁇
  • m is the number of divalent metal ions
  • n is the number of trivalent metal ions.
  • the benefit agent may also function as a carrier to deliver efficacy agents to skin treated with the compositions of the invention.
  • This route is particularly useful for delivering efficacy agents which are difficult to deposit onto the skin or those which suffer detrimental interactions with other components in the composition.
  • the carrier is often a silicone or hydrocarbon oil which is non solubilised/micellised by the surface active phase and in which the efficacy agent is relatively soluble.
  • efficacy agents include anti-viral agents; hydroxycaprylic acids; pyrrolidone; carboxylic acids; 3,4,4′-trichlorocarbanilide; benzoyl peroxide; perfumes; essential oils; germicides and insect repellants such as 2,4,4′-trichloro-2′-hydroxydiphenyl ether (Irgasan DP300); salicylic acid; willow extract, N,N-dimethyl m-toluamide (DEET); and mixtures thereof.
  • anti-viral agents include anti-viral agents; hydroxycaprylic acids; pyrrolidone; carboxylic acids; 3,4,4′-trichlorocarbanilide; benzoyl peroxide; perfumes; essential oils; germicides and insect repellants such as 2,4,4′-trichloro-2′-hydroxydiphenyl ether (Irgasan DP300); salicylic acid; willow extract, N,N-dimethyl m-toluamide (DEET);
  • the composition may contain one or more additional anionic surface-active agents, in addition to the acyl sulphonate salt defined above; preferably selected from salts of fatty acids; alkali metal salts of mono- or dialkyl sulfates; mono- or dialkyl ether sulfates; lauryl ether sulfates; alkyl sulfonates; alkyl aryl sulfonates; primary alkane disulfonates; alkene sulfonates; hydroxyalkane sulfonates; alkyl glyceryl ether sulfonates; alpha-olefinsulfonates; alkyl phosphates; sulfonates of alkylphenolpolyglycol ethers; salts of alkyl sulfopolycarboxylic acid esters; alkyl sulfosuccinates and salts thereof, alkyl ether sulfosuccinates and salts thereof,
  • the composition may contain one or more non-ionic surface-active agents, preferably selected from the following: reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides, especially ethylene oxide either alone or with propylene oxide (for example alkyl (C 6 -C 22 ) phenol-ethylene oxide condensates, the condensation products of aliphatic (C 8 -C 18 ) 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); long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulphoxides; alkyl amido amine oxides; alkyl tertiary phosphine oxides; alkoxyl alkyl amines; sorbitan; sorbitan esters; sucrose esters
  • a non-ionic surface active agent when present, preferably comprises up to 15% wt of the composition, preferably up to 10% wt.
  • Representative solid particles include active materials or agents such as those used for hair treatments, e.g., zinc pyrithione, or any abrasive materials which may be of natural or synthetic origin.
  • active materials or agents such as those used for hair treatments, e.g., zinc pyrithione, or any abrasive materials which may be of natural or synthetic origin.
  • these are polycarbonates, polypropylenes, polyethylenes, alumina, calcite and clays.
  • Such particles generally have a crystal size ranging from about 1 to 600 microns and preferably from about 10 to 400 microns.
  • these are preferably droplets of at least one vegetable oil, essential oil and/or, more particularly, silicone oil.
  • the silicone oils which are well suited according to the present invention include the polyalkylsiloxanes, polyalkylarylsiloxanes and mixtures thereof.
  • the preferred polyalkylsiloxanes are, especially, polydimethylsiloxanes such as dimethicone whose viscosity may range from about 20 mPa ⁇ s to 50 Pa ⁇ s at 25° C., pure or mixed with cyclomethicone.
  • Particularly exemplary of the polyalkylarylsiloxanes are the polyphenyldimethyl-siloxanes.
  • polydiorganosiloxanes such as polydimethylsiloxanes having a molecular weight of less than or equal to 3,000,000 and polydimethyl-diphenylsiloxanes of molecular weight of about 600,000 are especially well suited according to the invention.
  • the size of the oil droplets within the compositions of the invention advantageously ranges from about 0.5 to 50 microns.
  • the formulations according to the invention may contain approximately 0.5% to 8% and, preferably, about 1.5% to 4.5% by weight of water-insoluble particles.
  • compositions of the invention may include these:
  • compositions according to the invention contain an anionic surface-active agent mixed with at least one cosurface-active agent in a cosurface-active agent/anionic surface-active agent mole ratio equal to or greater than 1.
  • a benefit of the invention is the ability to suspend oil and/or emollient particles in a non-Newtonian composition.
  • the following oil/emollients may optionally be suspended in the compositions of the invention.
  • Various classes of oils are set forth below.
  • Vegetable oils Arachis oil, castor oil, cocoa butter, coconut oil, corn oil, cotton seed oil, olive oil, palm kernel oil, rapeseed oil, safflower seed oil, sesame seed oil and soybean oil.
  • Esters Butyl myristate, cetyl palmitate, decyloleate, glyceryl laurate, glyceryl ricinoleate, glyceryl stearate, glyceryl isostearate, hexyl laurate, isobutyl palmitate, isocetyl stearate, isopropyl isostearate, isopropyl laurate, isopropyl linoleate, isopropyl myristate, isopropyl palmitate, isopropyl stearate, propylene glycol monolaurate, propylene glycol ricinoleate, propylene glycol stearate, and propylene glycol isostearate.
  • Animal Fats acetylated lanolin alcohols, lanolin, lard, mink oil and tallow.
  • oil/emollients include mineral oil, petrolatum, silicone oil such as dimethyl polysiloxane, lauryl and myristyl lactate.
  • the emollient/oil is generally used in an amount from about 0 to 20%, preferably 0 to 15% by wt. of the composition.
  • compositions of the invention may include optional ingredients as follows:
  • compositions of the invention may be formulated as products for washing the skin, for example, bath or shower gels, hand washing compositions or facial washing liquids; pre- and post-shaving products; rinse-off, wipe-off and leave-on skin care products; products for washing the hair and for dental use.
  • composition of the invention as defined above, in the formulation of a personal care product with improved stability, in an aqueous environment.
  • composition of the invention as defined above, in the formulation of a personal care product which has improved stability in an aqueous environment compared with a corresponding compound in which each of R 2 to R 5 is a hydrogen atom.
  • the composition, and in particular the defined sulfonated compound is resistant to breakdown in an aqueous environment.
  • it has essentially no effect on the pH of the product, over time. It has excellent lathering properties and is very mild to skin and eyes.
  • Weight percentage values herein refer to the total complement of compounds of a named type, e.g. amphoteric or zwitterionic surfactants in total; or benefit agents in total.
  • Examples 1 to 5 were carried out to assess the suitability of certain isethionate salts for use in the present invention.
  • Examples 6-14 relate to certain compositions which are within the scope of the present invention.
  • SCMI sodium cocoylmethylisethionate
  • SCI sodium cocoyl isethionate
  • SLS sodium lauryl sulfate
  • SLMI sodium lauroylmethylisethionate
  • SLES sodium laureth sulfate
  • SCEI sodium cocoyl ethyl isethionate
  • CMEA cocamide monoethanolamine
  • the pH values were read using a standard electrode pH meter (Fisher Accument XL-25). The electrode was place in the composition (no further dilution) and the pH recorded.
  • the Zein protocol is an in-vitro test to measure skin irritancy of formulations.
  • the method makes use of the correlation between binding ability of surfactants to proteins and the damage the surfactant causes to the skin.
  • the de-naturation of epidermal protein is a key mechanism in the development of observable damage to the skin by surfactants.
  • Zein protein an insoluble protein extracted from corn kernel, is used as a model for epidermal protein and the solubility of the Zein protein in surfactant solutions is believed to be a reliable guide for the skin irritancy caused by the surfactant.
  • the test involves establishing the amount of Zein protein which can be solubilised by surfactant.
  • Zein protein 5 g may be dispersed in 40 cm 3 of surfactant solution (at 2 wt % concentration). The mixture is shaken for 1 hour at 35° C., and immediately centrifuged to remove any non-solubilised Zein. The amount solubilised is estimated from the solution nitrogen content using micro-Kjeldahl method (making allowance for any nitrogen in the compound tested).
  • Foaming tests were performed using a capped measuring cylinder which was charged with an aliquot of the stated surfactant leaving room for foam to form. Foam heights in the graduated cylinder were measured at the start and after 10 inversions of the cylinder. The operation was carried out in the same manner for each surfactant.
  • compositions containing canola oil as benefit agent were prepared and tested for viscosity and physical stability over a one-month period. The results are set out in the table below.
  • Examples 15 and 16 were prepared by progressive mixing and blending of the components, in the order given.
  • the pH was adjusted to between 5.2 and 5.8 using citric acid after blending of the preceding components (in the respective tables), but before blending in of the fragrance, dye and preservative.
  • the following moisturizing and conditioning shampoo was prepared.
  • the viscosity of the conditioning shampoo of Example 15 was tested under different shear rates, on a viscometer with a T-Bar C Spindle, at 22° C. The results were as follows:
  • the following foaming body lotion was prepared.
  • the viscosity of the foaming body lotion of Example 16 was tested under different shear rates, on a viscometer with a T-Bar C Spindle, at 22° C. The results were as follows:

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US11484488B2 (en) 2018-07-26 2022-11-01 The Procter & Gamble Company Personal cleansing compositions

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GB0912468D0 (en) * 2009-07-17 2009-08-26 Innospec Ltd Composition and method
SG177603A1 (en) * 2009-08-03 2012-02-28 Innospec Ltd Composition
AR080797A1 (es) 2010-03-26 2012-05-09 Innospec Ltd Composiciones surfactantes concentradas
AR080796A1 (es) 2010-03-26 2012-05-09 Innospec Ltd Composiciones acuosas que comprenden un acil-isetionato para el cuidado personal.
CN103052427B (zh) 2010-08-18 2015-12-09 荷兰联合利华有限公司 抗头皮屑洗发香波
BR112013013512A2 (pt) 2010-12-02 2016-07-12 Unilever Nv "xampu anticaspa e uso de um isetionato de alquiloila ramificado"
US8114824B1 (en) * 2010-12-06 2012-02-14 Conopco, Inc Compositions comprising fatty acyl isethionate surfactant product, alkanoyl compounds and triglycerides with low level of hydrogenation
FR2976803B1 (fr) * 2011-06-23 2013-07-26 Oreal Composition cosmetique comprenant au moins un polymere amphotere particulier et un tensioactif anionique particulier.
DE102011084888A1 (de) * 2011-10-20 2013-04-25 Henkel Ag & Co. Kgaa Mildes kosmetisches Reinigungsmittel
FR2992859B1 (fr) * 2012-07-09 2014-10-03 Fabre Pierre Dermo Cosmetique Utilisation de coceth sulfate de zinc comme agent antibacterien vis a vis de propionibacterium acnes
EP3598967B1 (fr) * 2018-07-26 2023-03-15 The Procter & Gamble Company Compositions d'hygiène personnelle, procédés et utilisations
TW202241379A (zh) * 2020-12-31 2022-11-01 美商梅拉洛伊卡公司 嬰兒洗劑/洗髮精

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US4954282A (en) * 1989-04-19 1990-09-04 Lever Brothers Company Acyl isethionate skin cleansing compositions
US5132037A (en) * 1989-05-05 1992-07-21 Lever Brothers Company, Division Of Conopco, Inc. Aqueous based personal washing cleanser
US5393466A (en) * 1991-11-25 1995-02-28 Lever Brothers Company, Division Of Conopco, Inc. Fatty acid esters of polyalkoxylated isethionic acid
US5556628A (en) * 1992-08-05 1996-09-17 Rhone-Poulenc Chimie Free-flowing pseudoplastic cosmetic compositions/suspensions
WO1994009763A1 (fr) * 1992-11-04 1994-05-11 Unilever Plc Ameliorations concernant des tensio-actifs a base d'isethionate substitue et compositions de soin pour la peau renfermant lesdits tensio-actifs
US5612307A (en) * 1994-07-19 1997-03-18 Lever Brothers Company, Division Of Conopco, Inc. Detergent compositions containing separate stripes of surface active agents and benefit agent
US5661189A (en) * 1994-07-19 1997-08-26 Lever Brothers Company, Division Of Conopco, Inc. Detergent composition
US5965000A (en) * 1994-11-30 1999-10-12 Herberts Gmbh Storage-stable, single-component concentrate, production and use thereof for the production of cathodically depositable electrocoating lacquer baths
US6077816A (en) * 1995-08-07 2000-06-20 Unilever Home & Personal Care Usa, Division Of Conopco, Inc. Liquid cleansing composition comprising soluble, lamellar phase inducing structurant
US6174846B1 (en) * 1997-12-18 2001-01-16 Lever Brothers Company, A Division Of Conopco, Inc. Liquid composition with enhanced low temperature stability
US6150312A (en) * 1999-04-05 2000-11-21 Unilever Home & Personal Care Usa, A Division Of Conopco, Inc. Liquid composition with enhanced low temperature stability comprising sodium tricedeth sulfate
US20030049292A1 (en) * 1999-12-18 2003-03-13 Clariant Gmbh Hair treatments comprising zinc salts of piroctone olamine
US20050089536A1 (en) * 2000-12-01 2005-04-28 Matthias Loffler Use of comb copolymers based on acryloyldimethyltaurine acid in cosmetic, pharmaceutical and dermatological products
US20030180246A1 (en) * 2001-12-21 2003-09-25 Seren Frantz Stable surfactant compositions for suspending components
US20040202636A1 (en) * 2003-04-11 2004-10-14 Kaczvinsky Joseph Robert Personal care composition containing an antidandruff component and a nonionic surfactant
WO2005075623A1 (fr) * 2004-01-20 2005-08-18 Huntsman Petrochemical Corporation Nouveaux esters d'acylalkylisethionate et applications relatives dans des produits de consommation
US20060270584A1 (en) * 2005-05-20 2006-11-30 Seren Frantz Structured surfactant compositions

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11484488B2 (en) 2018-07-26 2022-11-01 The Procter & Gamble Company Personal cleansing compositions
US11638683B2 (en) 2018-07-26 2023-05-02 The Procter & Gamble Company Personal cleansing compositions

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TW200934520A (en) 2009-08-16
CA2705824C (fr) 2015-12-01
US10265257B2 (en) 2019-04-23
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MX2010005350A (es) 2010-08-03
US20180104169A1 (en) 2018-04-19
EP2211830A2 (fr) 2010-08-04
TWI436784B (zh) 2014-05-11
MY160105A (en) 2017-02-28
AU2008322682A1 (en) 2009-05-22
BRPI0820378B1 (pt) 2016-09-20
US9833396B2 (en) 2017-12-05
CA2705824A1 (fr) 2009-05-22
WO2009063250A2 (fr) 2009-05-22
EP2211830B1 (fr) 2015-07-29
US20170095411A1 (en) 2017-04-06
BRPI0820378A2 (pt) 2014-09-30
GB0722550D0 (en) 2007-12-27
JP2011503167A (ja) 2011-01-27
WO2009063250A3 (fr) 2010-06-17
CN101959497A (zh) 2011-01-26

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