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WO1999038491A1 - Compositions nettoyantes hydratantes pour l'hygiene personnelle a depot lipidique ameliore - Google Patents

Compositions nettoyantes hydratantes pour l'hygiene personnelle a depot lipidique ameliore Download PDF

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Publication number
WO1999038491A1
WO1999038491A1 PCT/IB1999/000138 IB9900138W WO9938491A1 WO 1999038491 A1 WO1999038491 A1 WO 1999038491A1 IB 9900138 W IB9900138 W IB 9900138W WO 9938491 A1 WO9938491 A1 WO 9938491A1
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WO
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Prior art keywords
moisturizing
personal cleansing
cleansing composition
brominated
neat
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Application number
PCT/IB1999/000138
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English (en)
Inventor
Thomas Jefferson Dixon
Original Assignee
The Procter & Gamble Company
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.)
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Publication date
Application filed by The Procter & Gamble Company filed Critical The Procter & Gamble Company
Priority to JP2000529225A priority Critical patent/JP2002501883A/ja
Priority to EP99900587A priority patent/EP1051153A1/fr
Publication of WO1999038491A1 publication Critical patent/WO1999038491A1/fr

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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
    • A61K8/33—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing oxygen
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/361—Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides 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
    • A61K8/02—Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04—Dispersions; Emulsions
    • A61K8/046—Aerosols; Foams
    • 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
    • A61K8/31—Hydrocarbons
    • 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
    • A61K8/34—Alcohols
    • A61K8/342—Alcohols having more than seven atoms in an unbroken chain
    • 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
    • A61K8/36—Carboxylic acids; Salts or anhydrides thereof
    • A61K8/365—Hydroxycarboxylic acids; Ketocarboxylic 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
    • 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
    • A61K8/30—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
    • A61K8/46—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
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/72—Cosmetics or similar toiletry preparations characterised by the composition containing organic macromolecular compounds
    • A61K8/73—Polysaccharides
    • A61K8/731—Cellulose; Quaternized cellulose derivatives
    • 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
    • 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
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q5/00—Preparations for care of the hair
    • A61Q5/02—Preparations for cleaning the hair

Definitions

  • the present invention relates to moisturizing personal cleansing compositions which provide improved moisturization of the skin.
  • the moisturizing personal cleansing compositions of the present invention contain a lipophilic skin moisturizing agent, a surfactant, a stabilizer, and water in an aerosol form.
  • the compositions of the invention increase the deposition of the moisturizing agent and increases the lather of the personal cleansing composition.
  • Moisturizing personal cleansing compositions are popular in the United States and around the world. Oesirable moisturizing personal cleansing compositions must meet a number of criteria. For example, in order to be acceptable to consumers, a moisturizing personal cleansing product must exhibit good cleaning properties, must exhibit good lathering characteristics, must be mild to the skin (not cause drying or irritation) and preferably should even provide a moisturization benefit to the skin.
  • Moisturizing personal cleansing products which contain high levels of lipophilic skin conditioning agents have been disclosed.
  • U.S. Patent Number 5,650,384, issued to Gordon et al., on July 22, 1997 discloses the use of such a cleansing product used in conjunction with a mesh bath sponge.
  • the mesh sponge provides enhanced lathering for the cleansing system.
  • Aerosol personal skin cleansers are also known.
  • U.S. Patent Number 5,002,680. issued to Schmidt et al., on March 26, 1991 discloses mild skin cleansing, aerosol mousses containing lipophilic moisturizing agents.
  • the compositions taught in Schmidt deliver low levels of moisturizing agent deposition to the skin.
  • the skin feel attributes that result from skin conditioning agents being deposited on the skin is enormously popular with consumers.
  • products such as Oil of Olay Moisturizing Body Wash ®, which deposit lipophilic skin moisturizing agents on the skin are very popular with consumers, some consumers would prefer to have an even greater moisturizing benefit delivered from a body wash product. Therefore, it would be desirable to provide a moisturizing personal cleansing composition with even greater moisturizing properties.
  • the present invention relates to moisturizing personal cleansing compositions comprising a lathering surfactant and a lipophilic skin moisturizing agent wherein the moisturizing personal cleansing composition has a Lipid Deposition Value of greater than or equal to about 25 micrograms/square centimeter.
  • the invention further relates to moisturizing personal cleansing composition
  • moisturizing personal cleansing composition comprising a) from about 85% to about 95% of a neat cleansing lotion, which comprises i) from about 0.5% to about 30%, by weight of the neat cleansing lotion, of a lathering surfactant, ii) from about 0.5% to about 33%, by weight of the neat cleansing lotion, of a lipophilic skin moisturizing agent, iii) from about 0.1% to about 2%, by weight of the neat cleansing lotion, of a stabilizer; and iv) from about 35% to about 90%, by weight of the neat cleansing lotion, of water; and b) from about 3% to about 15% of a hydrocarbon propellant; wherein the moisturizing personal cleansing composition has a Deposition Value of greater than or equal to about 25 micrograms/square centimeter.
  • the present invention relates to moisturizing personal cleansing compositions which provide improved moisturization to the skin.
  • personal cleansing compositions refers to rinse-off personal cleansing products, including, but not limited to, shower washes, liquid handsoaps, facial cleansers, and shampoos.
  • the compositions of the invention are in the aerosol form.
  • aerosol refers to a product wherein the moisturizing composition is packaged in a container, along with a propellant gas.
  • the aerosol compositions form a foam after dispensing of the product from the package.
  • the aerosol personal cleansing compositions of the present invention contain a lathering surfactant, a lipophilic skin moisturizing agent, a stabilizer, water and a hydrocarbon pressure propellant.
  • the personal cleansing compositions are preferably emulsions which are made up of a moisturizing phase and an 3
  • aqueous cleansing phase aqueous cleansing phase.
  • moisturizing personal cleansing compositions are described in detail as follows.
  • the moisturizing personal cleansing compositions of the present invention comprise from about 0.5% to about 33%, preferably from about 3% to about 25%, more preferably from about 5% to about 15%, by weight of the composition, of a lipophilic skin moisturizing agent.
  • the lipophilic skin moisturizing agents suitable for use herein typically have a viscosity which ranges from about 10 poise to about 1000 poise, preferably from about 100 poise to about 800 poise, more preferably from about 400 poise to about 500 poise, as measured by the Viscosity Method for Lipophilic Skin Moisturizing Agents hereinafter set forth in the Analytical Methods section.
  • the lipophilic skin moisturizing agent can also desirably be defined in terms of its solubility parameter, as defined by Vaughan in Cosmetics and Toiletries. Vol. 103, p. 47-69, October 1988.
  • a lipophilic skin moisturizing agent having a Vaughan solubility Parameter (VSP) of from 5 to 10, preferably from 5.5 to 9 is suitable for use in the moisturizing personal cleansing compositions herein.
  • VSP Vaughan solubility Parameter
  • the lipophilic skin conditioning agent is selected from the group consisting of hydrocarbon oils and waxes, silicones, fatty acid derivatives, cholesterol, cholesterol derivatives, di- and tri-giycerides, vegetable oils, vegetable oil derivatives, liquid nondigestible oils such as those described in U.S.
  • Fatty acids, fatty acid soaps and water soluble polyols are specifically excluded from our definition of a lipophilic skin moisturizing agent.
  • Hydrocarbon oils and waxes Some examples are petrolatum, mineral oil micro- crystalline waxes, polyalkenes (e.g. hydrogenated and nonhydrogenated polybutene and polydecene), paraffins, cerasin, ozokerite, polyethylene and perhydrosqualene. Blends of petrolatum and hydrogenated and nonhydrogenated high molecular weight polybutenes wherein the ratio of petrolatum to polybutene ranges from about 90: 10 to about 40:60 are also suitable for use as the lipid skin moisturizing agent in the compositions herein. 5
  • Silicone Oils Some examples are dimethicone copolyol, dimethylpolysiloxane, diethylpolysiloxane, high molecular weight dimethicone, mixed C1-C30 alkyl polysiloxane, phenyl dimethicone, dimethiconol, and mixtures thereof. More preferred are non-volatile silicones selected from dimethicone, dimethiconol, mixed C1-C30 alkyl polysiloxane, and mixtures thereof. Nonlimiting examples of silicones useful herein are described in U.S. Patent No. 5,01 1,681, to Ciotti et al., issued April 30, 1991, which is incorporated by reference.
  • Di- and tri-glvcerides Some examples are castor oil, soy bean oil, derivatized soybean oils such as maleated soy bean oil, safflower oil, cotton seed oil, corn oil, walnut oil, peanut oil, olive oil, cod liver oil, almond oil, avocado oil, palm oil and sesame oil, vegetable oils and vegetable oil derivatives; coconut oil and derivatized coconut oil, cottonseed oil and derivatized cottonseed oil, jojoba oil, cocoa butter, and the like.
  • soy bean oil soy bean oil, derivatized soybean oils such as maleated soy bean oil, safflower oil, cotton seed oil, corn oil, walnut oil, peanut oil, olive oil, cod liver oil, almond oil, avocado oil, palm oil and sesame oil, vegetable oils and vegetable oil derivatives
  • coconut oil and derivatized coconut oil, cottonseed oil and derivatized cottonseed oil jojoba oil, cocoa butter, and the like.
  • Acetoglyceride esters are used and an example is acetylated monoglycerides.
  • Lanolin and its derivatives are preferred and some examples are lanolin, lanolin oil, lanolin wax, lanolin alcohols, lanolin fatty acids, isopropyl lanolate, acetylated lanolin, acetylated lanolin alcohols, lanolin alcohol linoleate, lanolin alcohol riconoleate.
  • the lipophilic skin conditioning agent is comprised of lipids selected from the group consisting: petrolatum, blends of petrolatum and high molecular weight polybutene, mineral oil, liquid nondigestible oils (e.g. liquid cottonseed sucrose octaesters) or blends of liquid digestible or nondigestible oils with solid polyol polyesters (e.g.
  • sucrose octaesters prepared from C22 fatty acids wherein the ratio of liquid digestible or nondigestible oil to solid polyol polyester ranges from about 96:4 to about 80:20, hydrogenated or nonhydrogenated polybutene, micro-crystalline wax, polyalkene, paraffin, cerasin, ozokerite, polyethylene, perhydrosqualene, dimethicones, alkyl siloxane, polymethylsiloxane, methylphenylpolysiloxane and mixtures thereof.
  • the ratio of petrolatum to the other selected lipids is preferably from about 10: 1 to about 1 :2, more preferably from about 5: 1 to about 1:1.
  • the moisturizing personal cleansing compositions of the present invention are emulsions which comprise a moisturizing phase.
  • the moisturizing phase provides the vehicle for delivering the lipophilic skin moisturizing agents to the skin of the user.
  • the average droplet size of the moisturizing phase droplets ranges from about 0.005 microns to about 1000 microns, preferably from about 0.1 to about 500 microns, more preferably from about 10 to about 350 microns, and most preferably from about 50 to about 200 microns in diameter. See U.S. Patent Number Re. 34,584, Grote et al., Reissued April 12, 1994, U.S. Patent Number 5,246,694, issued to Birtwistle, on September 21 , 1993, and U.S. Patent Number 5,650,84, 6
  • the diameter of a droplet means the longest length of the droplet.
  • the droplet size is measured using the Droplet Size Measurement for Moisturizing Phase Droplets Method, hereinafter set forth in the Analytical Methods Section. B. Stabilizer
  • the moisturizing personal cleansing compositions of the present invention also typically contain from about 0.1% to about 5%, preferably from about 0.25% to about 2%, more preferably from about 0.5% to about 1% of a stabilizer.
  • the stabilizer is used to form a crystalline stabilizing network in the composition that prevents the lipophilic skin moisturizer agent droplets from coalescing and phase splitting in the product.
  • the network exhibits time dependent recovery of viscosity after shearing (e.g., thixotropy).
  • the stabilizer employed in the personal cleansing compositions herein comprises a crystalline, hydroxyl-containing stabilizer.
  • This stabilizer can be a hydroxyl-containing fatty acid, fatty ester or fatty soap water-insoluble wax-like substance or the like.
  • the crystalline, hydroxy-containing stabilizer is selected from the group consisting of: (i) CH 2 - ORj
  • Rl is -C-R4(CHOH) R5(CHOtfyR6;
  • R2 is Rj or H
  • R3 is R ⁇ or H
  • R4 is c o-2o Alk y'
  • R 5 is c 0-20 Alk y!>
  • R ⁇ is c 0-20 A1 M
  • R4 + R 5 + R 6 C 10 -22 and wherein ⁇ x+y ⁇ 4; 7
  • R 7 is -R 4 (CHOH) x R5(CHOH) y R 6
  • M is Na + , K + or Mg++, or H
  • Some preferred hydroxyl-containing stabilizers include 12-hydroxystearic acid, 9,10- dihydroxystearic acid, tri-9, 10-dihydroxystearin and tri-12-hydroxystearin (hydrogenated castor oil is mostly tri-12-hydroxystearin). Tri-12-hydroxystearin is most preferred for use in the emulsion compositions herein.
  • hydroxyl-containing stabilizers When these crystalline, hydroxyl-containing stabilizers are utilized in the personal cleansing compositions herein, they are typically present at from about 0.5% to about 5%, and preferably from about 0.75% to about 2% of the moisturizing personal cleansing compositions.
  • the stabilizer is insoluble in water under ambient to near ambient conditions.
  • the stabilizer employed in the personal cleansing compositions herein can comprise a polymeric thickener.
  • polymeric thickeners as the stabilizer in the personal cleansing compositions herein they are typically included in an amount ranging from about 0.1% to about 5%, preferably from about 0.25% to about 3%, by weight of the composition.
  • the polymeric thickener is preferably an anionic, nonionic, cationic or hydrophobically modified polymer selected from the group consisting of cationic poiysaccharides of the cationic guar gum class with molecular weights of 1,000 to 3,000,000; anionic, cationic, and nonionic homopolymers derived from acrylic and/or methacrylic acid; anionic, cationic, and nonionic cellulose resins; cationic copolymers of dimethyldialkylammonium chloride, and acrylic acid; cationic homopolymers of dimethylalkylammonium chloride; cationic polyalkylene and ethoxypolyalkylene imines; polyethylene glycol of molecular weight from 100,000 to 4,000,000; and mixtures thereof.
  • the polymer is selected from the group consisting of Sodium Polyacrylate, Hydroxy Ethyl Cellulose, Cetyl Hydroxy Ethyl Cellulose, and Polyquaternuium 10.
  • C10-C22 ethylene glycol fatty acid ester Another stabilizer which can be employed in the personal cleansing compositions herein are C10-C22 ethylene glycol fatty acid ester.
  • C10-C22 ethylene glycol fatty acid esters can also desirably be employed in combination with the polymeric thickeners hereinbefore described.
  • the ester is preferably a diester, more preferably a C14-C18 8
  • C10-C22 ethylene glycol fatty acid esters are utilized as the stabilizer in the personal cleansing compositions herein, they are typically present at from about 3% to about 10%, preferably from about 5% to about 8%, more preferably from about 6% to about 8% of the personal cleansing compositions.
  • Another class of stabilizer which can be employed in the personal cleansing compositions of the present invention comprises dispersed amorphous silica selected from the group consisting of fumed silica and precipitated silica and mixtures thereof.
  • dispersed amorphous silica refers to small, finely divided non-crystalline silica having a mean agglomerate particle size of less than about 100 microns.
  • Fumed silica which is also known as arced silica, is produced by the vapor phase hydrolysis of silicon tetrachloride in a hydrogen oxygen flame. It is believed that the combustion process creates silicone dioxide molecules which condense to form particles. The particles collide, attach and sinter together. The result of this process is a three dimensional branched chain aggregate. Once the aggregate cools below the fusion point of silica, which is about 1710°C, further collisions result in mechanical entanglement of the chains to form agglomerates. Precipitated silicas and silica gels are generally made in aqueous solution.
  • the fumed silica preferably has a mean agglomerate particle size ranging from about 0.1 microns to about 100 microns, preferably from about 1 micron to about 50 microns, and more preferably from about 10 microns to about 30 microns.
  • the agglomerates are composed of aggregates which have a mean particle size ranging from about 0.01 microns to about 15 microns, preferably from about 0.05 microns to about 10 microns, more preferably from about 0.1 microns to about 5 microns and most preferably from about 0.2 microns to about 0.3 microns.
  • the silica preferably has a surface area greater than 50 sq. m/gram, more preferably greater than about 130 sq. m./gram, most preferably greater than about 180 sq. m./gram.
  • amorphous silicas When amorphous silicas are used as the stabilizer herein, they are typically included in the emulsion compositions at levels ranging from about 0.1% to about 10%, preferably from about 0.25% to about 8%, more preferably from about 0.5% to about 5%.
  • a fourth class of stabilizer which can be employed in the personal cleansing compositions of the present invention comprises dispersed smectite clay selected from the group consisting of bentonite and hectorite and mixtures thereof.
  • Bentonite is a colloidal aluminum clay sulfate. See Merck Index, Eleventh Edition, 1989, entry 1062, p. 164, which is incorporated by reference.
  • Hectorite is a clay containing sodium, magnesium, 9
  • the personal cleansing compositions of the present invention also comprises a lathering surfactant selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, and mixtures thereof.
  • the lathering surfactant is defined herein as a surfactant or surfactant mixture thereof that when combined have an equilibrium surface tension of between 15 and 50 dynes/cm, more preferably between 25 and 40 dynes/cm as measured at the CMC (critical micelle concentration) at 25°C.
  • Some surfactant mixes can have a surface tension lower than those of its individual components.
  • the personal cleansing compositions herein comprise from about 0.5% to about 30%, preferably from about 2% to about 20%, and most preferably from about 5% to about 10% of a lathering surfactant.
  • Anionic surfactants useful herein include: acyl isethionates, acyl sarcosinates, alkylglycerylether sulfonates, alkyl sulfates, acyl lactylate, methylacyl taurates, paraffin sulfonates, linear alkyl benzene sulfonates, N-acyl glutamates, alkyl sulfosuccinates, alpha sulfo fatty acid esters, alkyl ether carboxylates, alkyl phosphate esters, ethoxylated alkyl phosphate esters, alpha olefin sulphates, the alkyl ether sulfates (with 1 to 12 ethoxy groups) and mixtures thereof, wherein said surfactants contain C8 to C22 alkyl chains and wherein the counterion is selected from the group consisting of: a, , NH4, N(CH2CH2 ⁇ H)3.
  • the anionic surfactant is more preferred when selected from the group consisting of acyl isethionate, acyl sarcosinates, acyl lactylates, alkyl sulfosuccinates, alkylglycerylether sulfonates, methylacyl taurates, alkyl ether sulfates, alkyl sulfates, alkyl phosphate esters and mixtures thereof, wherein said surfactants contain has C8 to C14 alkyl chains and is present at a level of from about 8% to about 20%.
  • Amphoteric synthetic surfactants cannot serve as the sole surfactant in this product, but are preferred as a co-surfactant at a lower level of from about 1 part to about 10 parts, by weight and the more preferred types are selected from alkyl-ampho mono- and di ⁇ acetates, aikyl betaines, alkyl dimethyl amine oxides, alkyl sultaines, alkyl amidopropyl betaines, alkyl amidopropyl hydroxysultaines, and mixtures thereof, wherein said surfactants contain C8 to C22 alkyl chains.
  • Nonionic synthetic surfactants cannot serve as the sole surfactant in this product, but can be used as a co-surfactant at a lower level of from about 1% to about 15% by weight.
  • the more preferred types selected from the group consisting: alkyl glucose amides, alkyl glucose esters, polyoxyethylene amides, fatty alkane amides, alkyl amine oxides, alkyl polyglucosides, polyoxyethylene alkyl phenols, polyoxyethylene esters of fatty acids, EO/PO block co-polymers such as polyoxamines and poloxamers, sorbitan esters and alcohol esters, and mixtures thereof.
  • Cationic synthetic surfactants cannot serve as the sole surfactant in this product, but are preferred as a co-surfactant at a lower level of from about 0.5% to about 6%, by weight.
  • the more preferred types of cationic surfactants are selected from the group consisting: alkyl trimonium chloride and methylsulfate, and dialkyldimonium chloride and methylsulfate, and alkyl alkonium chloride and methylsulfate and mixtures thereof. These surfactants contain C12 to C24 carbon atoms per alkyl chain.
  • the most preferred cationic is selected from the group consisting of stearalkonium chloride, stearyltrimonium chloride, Di-stearyl-dimonium chloride, and mixtures thereof.
  • Cationic surfactants may also act as a lipid deposition aid.
  • the moisturizing emulsions compositions herein can also optionally contain C8-C14 fatty acid soap; where the soap has a counterion selected from the group consisting of K and N(CH2CH2OH)3, and mixtures thereof, in addition to the lathering synthetic surfactant.
  • the moisturizing personal cleansing compositions comprise less than about 5%, preferably less than about 4%, more preferably less than about 3%, and most preferably less than about 2% by weight of fatty acid soap.
  • the moisturizing personal cleansing emulsion compositions of the present invention comprise water as an essential component.
  • the water is typically present at a level of from about 35% to about 90%, preferably from about 50% to about 85%, and most preferably from about 65% to about 75% of the personal cleansing compositions of the present invention.
  • the moisturizing personal cleansing compositions of the present invention comprise an emulsion
  • the emulsion further comprises an aqueous cleansing phase which comprises the stabilizer, the lathering surfactant, and water.
  • the moisturizing personal cleansing compositions of the present invention comprise a hydrocarbon gas propellant.
  • the hydrocarbon propellant is used at levels from about 3% to about 15%, and preferably from about 5 to about 12% of the moisturizing personal cleansing composition.
  • the hydrocarbon propellant is selected from the group consisting of propane, n-butane, isobutane, n-pentane, isopentane, and hexane, and mixtures thereof.
  • the propellant must comprise less than about 15%, preferably less than 10% and more preferably less than 5%, by weight of the propellant, of non-hydrocarbon propellants.
  • the class of non-hydrocarbon propellants includes carbon dioxide, nitrous oxide (especially N2O), flourochlorohydrocarbons, and mixtures thereof.
  • a preferred propellant identified by the industry designation A-46 is a mixture of n-butane, isobutane, and propane in proportions chosen such that the blend has a vapor pressure of 46 psig at 70
  • hydrocarbon propellants results in increased deposition of the moisturizing personal cleansing compositions of the present invention. Without being limited by theory it is believed that since hydrocarbon compounds are more soluble in the lipophilic skin moisturizing agent, than non-hydrocarbon compounds, some of the hydrocarbon propellants are solubilized in the lipophilic skin moisturizing agent, changing the rheology of the agent. The hydrocarbon appears to make the high viscosity moisturizing agent more spreadable, which increases the deposition of the agent.
  • Preferred hydrocarbon propellants have a vapor pressure from about 3 psig to about 15 psig at 70°F.
  • the low vapor pressure hydrocarbon propellant comprises low molecular weight hydrocarbons, such as isobutane, n-pentane, isopentane, hexane, and mixtures thereof.
  • Another preferred propellant for the present invention comprises 85% isopentane and 15% isobutane.
  • Low vapor pressure propellants have been found to even further increase the deposition of the lipophilic skin moisturizing agent over higher vapor pressure hydrocarbon propellants.
  • the moisturizing agent with solubilized low vapor pressure hydrocarbon propellants in a aqueous surfactant matrix form a distinct lamellar phase crystal structure which results in a further increase in deposition of the moisturizing agent.
  • the composition is packed in a valved container that is designed to maintain the composition under pressure and to dispense it upon opening of the valve.
  • valves and containers are well known and valves of this general type are disclosed, by way of example and without limitation, in prior U.S. Pat. Nos. 5,248,495 dated Sep. 28, 1993; 2,772,820 dated Dec. 4, 1956; 2,777,735 dated Jan. 15, 1957; 3,191,816 dated June 29, 1965; 3,348,743 dated Oct. 24, 1967; 3,540,624 dated Nov. 17, 1970.
  • the moisturizing product of the present invention comprises a sealed container, such as an essentially cylindrical bottle, having a dispensing means such as a nozzle.
  • the container contains the composition and propellant gas.
  • Suitable containers may be made from any material, especially aluminum, tin-plate, plastics including PET, OPP, PE or polyamide and including mixtures, laminates or other combinations of these.
  • Foam is dispensed when the nozzle is activated and the cleansing composition is released together with the propellant gas.
  • the propellant gas expands to form many "bubbles" within the composition thereby creating the foam.
  • the personal cleansing compositions of the present invention can also contain a number of optional ingredients in the aqueous phase.
  • Weighting Oil
  • Weighting oils can optionally be added to the lipophilic skin moisturizing agent to increase the specific gravity of the agent, which allows for the improved deposition of moisturizing agent out of an emulsion composition with lower particle size droplets.
  • moisturizing phase of emulsion embodiments of the moisturizing personal cleansing compositions of the present invention may contain from about 1% to about 20%, preferably from about 3% to about 15%, and more preferably from about 5% to about 10%, by weight of the composition, of a weighting oil.
  • a weighting oil When weighting oils are used, the ratio of the lipophilic skin moisturizing agent to the weighting oil is critical to achieving the deposition benefits of the present invention and must range from about 20: 1 to about 1:10, preferably from about 10: 1 to about 1 :5, and more preferably from about 5:1 to about 1 : 1.
  • the weighting oils suitable herein typically have a specific gravity of from about 0.9 to about 2.0, preferably from about 1.1 to about 1.7, and more preferably from about 1.2 to about 1.5.
  • weighting oils are disclosed in U.S. Patent Number 3,028,403, issued to Fritz et al., on April 3, 1962, U.S. Patent Number 3,240,794, issued to Bornfleth, on March 15, 1966, U.S. Patent Number 4,705,690, issued to Brand et al., on November 10, 1987, and U.S. Patent Number 4,705,691, issued to Kupper, on November 10, 1987, all incorporated by reference herein.
  • Suitable weighting oils can be selected from the group consisting of brominated esters of long chain fatty acids, brominated fatty alcohols, brominated ketones, brominated amides, brominated nitriles, brominated sulfonated fats, brominated hydrocarbons, brominated liquid polyol polyesters, glycerol ester of wood rosin (ester gum rosin), sucrose acetate isobutyrate (SAIB), gum damar, colophony, gum elemi, and mixtures thereof.
  • Preferred weighting oils are selected from the group consisting of brominated vegetable oil, brominated polyol fatty acid polyester, glycerol ester of wood rosin and mixtures thereof. Most preferred is brominated vegetable oil.
  • Other Optional Ingredients are selected from the group consisting of brominated esters of long chain fatty acids, brominated fatty alcohols, brominated ketones, brominated amides, brominated nitriles
  • the moisturizing personal cleansing compositions of the present invention can optionally include water-dispersible, gel-forming polymers.
  • This polymer is preferably an anionic, nonionic, cationic or hydrophobically modified polymer, selected from the group consisting of cationic polysaccharides of the cationic guar gum class with molecular weights of 1,000 to 3,000,000, anionic, cationic and nonionic homopolymers derived from acrylic and/or methacrylic acid, anionic, cationic and nonionic cellulose resins; cationic copolymers of dimethyldialkylammonium chloride and acrylic acid; cationic homopolymers of dimethyldialkylammonium chloride; cationic polyalkylene and ethoxypolyalkylene imines polyethylene glycol of molecular weight from 100,00 to 4,000,000; and mixtures thereof.
  • the polymer is selected form the group consisting of Sodium Polyacrylate, Hydroxy Ethyl Cellulose, Cetyl Hydroxy Ethyl
  • the polymer is preferably included in the compositions of the present invention at a level of from about 0.1 parts to 1 part, more preferably 0.1 parts to 0.5 parts.
  • the polymers can improve the sensory feel of the lipid on skin in addition to providing product stabilization. The improved sensory feel results from reduced tackiness and greasiness and improved smoothness. It is an especially preferred embodiment to use mixture of polymers, some of which are preferred for product stabilization, some are preferred for improved sensory feel.
  • Preferred polymers to improve sensory feel are selected from the group consisting: of polyethylene glycol, hydroxypropyl guar, guar hydroxypropyltrimonium chloride, polyquaternary 3, 5, 6, 7, 10, 1 1 and 24 and mixtures thereof.
  • humectants and solutes are one or more humectants and solutes.
  • a variety of humectants and solutes can be employed and can be present at a level of from about 0.5% to about 30%, more preferably from about 3.0% to about 20%.
  • the humectants and solutes are non- volatile, organic materials having a solubility of a least 5 parts in 10 parts water.
  • a preferred water soluble, organic material is selected from the group consisting of a polyol of the structure:
  • Rl H, C 1-C4 alkyl
  • C2-C10 alkane diols guanidine
  • glycolic acid and glycolate salts e.g. ammonium and quaternary alkyl ammonium
  • lactic acid and lactate salts e.g. ammonium and quaternary alkyl ammonium
  • polyhydroxy alcohols such as sorbitol, glycerol, hexanetriol, propylene glycol, hexylene glycol and the like
  • sugars and starches sugar and starch derivatives (e.g.
  • the most preferred polyols are selected from the group consisting of glycerin, polyoxypropylene( 1 ) glycerol and polyoxypropylene(3) glycerol, sorbitol, butylene glycol, propylene glycol, sucrose, urea and triethanolamine.
  • Preferred water soluble organic material are selected from the group consisting of glycerin, polyoxypropylene (1) glycerol and polyoxypropylene (3) glycerol, sorbitol, butylene glycol, propylene glycol, sucrose, and urea and triethanolamine.
  • oil thickening polymers such as those listed in EP 0 547 897 A2 to Hewitt, published 23/06/93, incorporated herein by reference, can also be included in the water phase of the emulsions of the present invention.
  • compositions of the present invention can be incorporated into various additional ingredients. These materials including, but not limited to, liquid appearance aids, 15
  • vitamins and derivatives thereof e.g., ascorbic acid, vitamin E, tocopheryl acetate, and the like
  • sunscreens e.g., thickening agents (e.g., polyol alkoxy ester, available as Crothix from Croda at levels up to 2% and xanthan gum at levels up to about 2%); preservatives for maintaining the anti-microbial integrity of the compositions; anti-acne medicaments (resorcinol, salicylic acid, and the like); antibacterial actives such as triclosan, triclocarban and zinc pyrithione; antioxidants; skin soothing and healing agents such as aloe vera extract, allantoin and the like; chelators and sequestrants; and agents suitable for aesthetic purposes such as fragrances, essential oils, skin sensates, pigments, pearlescent agents (e.g., mica and titanium dioxide), additives to impart a draggy rinse feel (e.g., fumed silica), additives to enhance deposition (
  • the elements of the present invention can be applied to any cleansing composition, such as leave-on and rinse-off hair conditioners, hair shampoos, leave-on and rinse-off facial acne preparations, facial milks and conditioners, shower gels, fast foaming and slow foaming facial cleansers, and hand and body lotions.
  • the personal cleansing compositions of the present invention can be prepared using standard procedures using standard materials known in these respective arts. See U.S. Patent 5,641,479, Linares et al, issued June 24, 1997; U.S. Patent Number 5,599,549, Wivell et al., issued February 4, 1997; U.S. Patent Number 5,585,104, Ha et al., issued December 17, 1996; U.S.
  • Patent 5,540,852 Kefauver et al., issued July 30, 1996; U.S. Patent 5,510,050, Dunbar et al., issued April 23, 1996; U.S. Patent 5,612,324, Guang Lin et al., issued March 18, 1997; U.S. Patent 5,587,176, Warren et al., issued December 24, 1996; U.S. Patent 5,549,888, Venkateswaran, issued August 27, 1996; and U.S. Patent 5,470,884, Corless et al., issued November 28, 1995; U.S. Patent Number 5,650,384, Gordon et al., issued July 22, 1997; U.S. Patent 5,607,678, Moore et al., issued March 4, 1997; U.S.
  • Patent 5,624,666 Coffindaffer et al., issued April 29, 1997; U.S. Patent 5,618,524, Bolich, Jr. et al., issued April 8, 1997; U.S. Patent 5,612,301, Inman, issued March 18, 1997; U.S. Patent 5,573,709, Wells, issued November
  • the moisturizing personal cleansing compositions of the present invention have particular rheological characteristics.
  • the moisturizing personal cleansing compositions of the present invention have a viscosity ranging from about 300 centipoise to about 100,000 centipoise, preferably from about 1,000 centipoise to about 70,000 centipoise, more preferably from about 1,000 centipoise to about 40,000 centipoise, as measured by the Viscosity of the Moisturizing Personal Cleansing Composition Method, hereinafter set forth in the Analytical Methods Section.
  • the moisturizing personal cleansing compositions of the present invention provide clinically efficacious moisturization benefits to the skin due to increased deposition of the lipophilic skin moisturizing agent.
  • the moisturizing personal cleansing compositions of the present invention have a Lipid Deposition Value of greater than or equal to about 25 micrograms/square centimeter, preferably greater than or equal to about 35 micrograms/square centimeter, and more preferably greater than or equal to about 50 micrograms/square centimeter of lipophilic skin moisturizing agent on the skin as measured by the Deposition of the Lipophilic Skin Moisturizing Agent Method set forth hereinafter in the Analytical Methods section.
  • the Wells-Brookfield Cone/Plate Model DV-II+ Viscometer is used to determine the viscosity of the moisturizing personal cleansing compositions herein. The determination is performed at 25°C with the 3.0 cm° cone (Spindle CP-52) measuring system with a gap of 0.013 mm between the two small pins on the respective cone and plate. The measurement is performed by injecting 0.5 ml of the sample to be analyzed between the cone and plate and rotating the cone at a set speed of 2 rpm. The resistance to the rotation of the cone produces a torque that is proportional to the shear stress of the liquid sample. The amount of torque is read and computed by the viscometer into absolute poise units based on geometric constants of the cone, the rate of rotation, and the stress related torque.
  • the Wells-Brookfield Cone/Plate Model DV-II+ Viscometer is used to determine the viscosity of the moisturizing personal cleansing compositions herein. The determination is 17
  • the arms are washed with a nonsoap-containing, nonlipid-containing product to reduce background interference as much as possible, then blotted dry.
  • the subject then wets the entire surface of the inner forearm with 95-1 OOF tap water for five seconds.
  • One milliliter of the moisturizing personal cleansing composition which contains the lipophilic skin moisturizing agent and weighting oil is applied to the forearm of the subject.
  • the test proctor wearing a latex glove, gently rubs the product on the skin for 10 seconds to generate lather.
  • the lather is allowed to remain on the forearm for fifteen seconds, followed by a thorough rinse for fifteen seconds with the water flowing from inner elbow to wrist.
  • the subject arm is then patted dry with a paper towel. The subject then allows the arm to "air" dry for 30 seconds.
  • Deposition of the lipophilic skin moisturizing agent on the skin is measured using a Sebumeter SM810 which is commercially available from Courage and Khazaka GmbH.
  • the Sebumeter measures the amount of lipophilic skin moisturizing agent that has been deposited on the skin via photometry of a special plastic strip, which becomes transparent when it absorbs the lipophilic skin moisturizing agent.
  • the plastic strip is extended over a mirror which is connected to a spring.
  • the measuring head of the device (comprised of spring, mirror and plastic strip) is pressed against the skin for 30 seconds.
  • the Deposition Value ( ⁇ g/sq. cm) is indicative of the amount of lipophilic skin moisturizing agent on the skin; the Deposition Value increases with increased amount of lipophilic skin moisturizing agent.
  • Sebumeter readings (3) are taken along the length of the forearm and the Deposition Value ( ⁇ g/sq. cm) is defined as the mean of the 3 readings, divided by a conversion factor to translate the sebumeter readings to actual deposition levels in ⁇ g/sq. cm.
  • the Sebumeter has the following limitations:
  • the Sebumeter tape also detects natural skin lipids.
  • a criterion of this test is that subject's baseline value measured on the Sebumeter, prior to washing, be less than or equal to 3 ⁇ g/sq. cm of forearm skin.
  • the Sebumeter like other surface extraction measurements may not measure all the deposited lipophilic skin moisturizing agent; if the skin topography is undulating it is possible that deposited lipophilic skin moisturizing agent may not be extracted by the Sebumeter tape.
  • the Sebumeter tape becomes saturated at a Deposition Value of above about 300 ⁇ g/sq. cm; so this method can only measure deposition values up to about 300 ⁇ g/sq. cm. 19
  • Steps 2-5 are repeated two times (total of three samples, 15 ml of solvent collected)
  • the extracted sample is then analyzed by gas chromatography as follows:
  • Lipid Stock Solution Into a clean, dry 100 ml volumetric flask, analytically weight 0.5 gram of lipid standard, recording weight to nearest 0.0002 g. Dilute to volume with heptane, stopper and stir to mix.
  • Lipid Working Standards Label three autosampler vials as follows: "100 ⁇ g,” “300 ⁇ g” and "500 ⁇ g.” Using the glass syringe, transfer 15 ⁇ l of internal standard solution into each vial. Rinse syringe well with heptane, then use it to transfer the following amounts of lipid stock solution to the vials: 22
  • the GC data is then plotted on a curve versus the Sebumeter data.
  • the slope of the curve is the conversion factor.
  • the conversion factor for petrolatum is 0.56.
  • Light microscopy is used as the supplemental droplet size measurement technique to measure the size of the moisturizing phase droplets.
  • the product is viewed under very low magnification ( ⁇ 10X) between a plate and coverslip and moisturizing phase droplet sizes are estimated via a micrometer.
  • the droplet size of the total population is determined, and a weighted average is calculated.
  • shower gel compositions are nonlimiting examples of the moisturizing personal cleansing compositions of the present invention.
  • Soybean Oil 9.00 14.00 5.00 7.5
  • A-46 propellant is a commercially available propellant made by Phillips Chemical
  • All of the aerosol packed moisturizing personal cleansing composition have Deposition Values greater than 25 micrograms / square centimeter.
  • the making procedure consists of the making of 2 premixes, a moisturizing phase premix and a polymer premix, in addition to the main mix.
  • the critical step in this process is insuring that the lipid premix is added to the main mix without excessive agitation.
  • the AE3S and ALS are added first to the main mix tank. Citric acid is then added. Then the remainder of the surfactants are added. Add the Trihydroxystearin, lauryl alcohol, and all required water, less 10% for the polymer premix. Heat the surfactant mixture to 160°F.
  • the aerosol compositions of examples A-H are then packed into the appropriate aerosol container.
  • the aerosol package options include: aerosol metal containers, bag-in-a- 25
  • the type package chosen is dependent on the desired product form.
  • the containers are pressurized with hydrocarbon propellant.

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Abstract

La présente invention porte sur des compositions nettoyantes hydratantes pour l'hygiène personnelle qui comprennent un agent tensioactif moussant et un agent hydratant lipophile. La composition nettoyante hydratante pour l'hygiène personnelle a une valeur de dépôt lipidique supérieure ou égale à environ 25 microgrammes/centimètre carré. Cette invention porte également sur une composition nettoyante hydratante d'hygiène personnelle qui comprend d'environ 85 % à environ 95 % d'une lotion nettoyante pure, elle-même renfermant (les pourcentages étant exprimés par rapport au poids total de la lotion pure): de 0,5 % à 30 % d'un agent tensioactif moussant; de 0,5 % à 33 % d'un agent hydratant lipophile; de 0,1 % à 2 % d'un stabilisant; et de 35 % à 90 % d'eau; et de 3 % à 15 % d'un propulseur d'hydrocarbure, ce qui donne une composition nettoyante, hydratante, dont la valeur de dépôt est supérieure ou égale à 25 microgrammes/centimètre carré.
PCT/IB1999/000138 1998-01-28 1999-01-26 Compositions nettoyantes hydratantes pour l'hygiene personnelle a depot lipidique ameliore WO1999038491A1 (fr)

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JP2000529225A JP2002501883A (ja) 1998-01-28 1999-01-26 脂質の沈着性を改善したモイスチャライジングパーソナルクレンジング組成物
EP99900587A EP1051153A1 (fr) 1998-01-28 1999-01-26 Compositions nettoyantes hydratantes pour l'hygiene personnelle a depot lipidique ameliore

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US6673755B2 (en) 2002-01-16 2004-01-06 The Procter & Gamble Company Personal cleansing compositions containing cleansing and skin active phases separated by one or more packaging barriers
WO2003066016A1 (fr) * 2002-02-08 2003-08-14 The Procter & Gamble Company Compositions de rinçage de soins cutanes
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