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
  • A61K8/18—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
  • A61K8/604—Alkylpolyglycosides; Derivatives thereof, e.g. esters
• • 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
  • A61K8/11—Encapsulated compositions
• • 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
  • A61K8/18—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
  • A61K8/42—Amides
• • 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
  • A61K8/49—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
  • A61K8/4993—Derivatives containing from 2 to 10 oxyalkylene groups
• • 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
  • A61K2800/22—Gas releasing
  • A61K2800/222—Effervescent
• • 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
  • A61K2800/40—Chemical, physico-chemical or functional or structural properties of particular ingredients
  • A61K2800/59—Mixtures
  • A61K2800/596—Mixtures of surface active compounds

Definitions

• the present invention relates to a cosmetic cleansing composition in a water-soluble capsule.
• the cosmetic cleansing composition should have a relatively high viscosity, so as to enable its encapsulation, whereas upon use the composition after breakage of the capsule should quickly dissolve or disperse in the aqueous environment.
• a cosmetic cleansing composition in a water- soluble capsule, preferably made of gelatin, which composition comprises an alkali metal salt of an alkyl sulphate, a fatty acid ester of an alkylglycoside having an alkyl group with from 1 to 4 carbon atoms and a sorbitan
• the viscosity of the product was dependent on the shear exerted upon it. For example 1 it was found that at very low shear (below to 10 sec “1 ) the viscosity of the product was 8,000 mPas; then with increasing shear (to 50 sec “1 ) the viscosity increased to 8,300 mPas and at constant shear of 50 sec "1 the viscosity increased further to 9,100 mPas. If the shear was then decreased, the viscosity further increased to 15,000 mPas. After some time, the viscosity started to decrease again. It may therefore be stated that the product is both shear thickening or dilatant and exhibits rheopexy.
• This rheological behaviour is of advantage during finishing and in using the product.
• a relatively high viscosity is required (in the order of 8,000 to 12,000 mPas) . If the product after finishing is left to rest, its viscosity will decrease to its original value at low shear, so that upon use the product will easily dissolve or disperse in water.
• the present invention relates to a cosmetic cleansing composition in a water-soluble capsule, which composition comprises:
• the fatty acid ester of the alkylglycoside having an alkyl group with from 1 to 4 carbon atoms preferably is a fatty acid ester of methyl glucoside, methyl fructoside, ethyl glycoside or ethyl fructoside.
• the fatty acid may be a straight or branched chain, saturated or unsaturated fatty acid having from 10 to 22 carbon atoms.
• lauric acid, palmitic acid, stearic acid and iso-stearic acid is preferred.
• fatty acid mixtures may be used, such as coconut fatty acids, palm kernel fatty acids and tallow fatty acids.
• coconut fatty acids of which the fatty acids up to and including octanoic acid have mainly been removed, is preferred.
• the fatty acid esters of the alkylglycosides comprise mono-, di-, tri- and higher esters.
• the use of esters comprising at least 50% by weight, preferably at least 75% by weight, of mono esters is preferred.
• the esters may comprise up to 15% by weight of free fatty acids, but preferably the free fatty acid content is as low as possible, e.g.below 3% by weight.
• from 30 to 85% by weight of alkylglycoside ester is used, preferably from 60% to 85% by weight, and most preferably from 70% to 80% by weight.
• the alkali metal salt of the alkyl sulphate preferably is the sodium salt.
• the alkyl sulphate contains from 10 to 20 carbon atoms, such as dodecyl, lauryl, hexadecyl, myristyl and octadecyl sulphate. The use of lauryl sulphate is preferred. In general amine salts or alkanolamine salts are not used in view of the possibility of skin irritation. Generally from 10% to 20% by weight of the alkali metal salt of C 10 - C 20 alkyl sulphate is used.
• the alkoxylated sorbitan fatty acid esters are derived from sorbitan (or anhydrohexitol) .
• the fatty acids may be straight or branched chain, saturated or unsaturated fatty acids having from 10 to 22 carbon atoms, such as lauric acid, stearic acid, palmitic acid, oleic acid, iso-stearic acid and the like.
• the sorbitan fatty acid esters have been alkoxylated with C1-C4 alkylene oxides, preferably ethylene oxide, or mixtures of such alkylene oxides. On an average from 10 to 80 moles of alkylene oxide per mole of sorbitan fatty acid ester are reacted.
• the use of polyoxyethylene (20) orbitan monolaurate is preferred.
• the alkoxylated sorbitan fatty acid ester is used in an amount of from 1% to 30% by weight, preferably from 5% to 25% by weight of the total composition.
• the fatty acid dialkylolamide is derived from a straight or branched chain, saturated or unsaturated fatty acid having from 10 to 22 carbon atoms, such as lauric acid or coconut acids of which the fatty acids up to and including octanoic acid have mainly been removed. In the latter case the term "coconut fatty acid dialkylolamide" is used and these dialkylolamides are preferred.
• the hydroxyalkyl groups of the dialkylolamide have from 2 to 5 carbon atoms and these groups may the same or different and may be mono- or polyhydroxyalkyl.
• the use of coconut fatty acid diethanolamide is preferred.
• the fatty acid dialkylolamide is used in an amount of up to 30% by weight of the total composition, preferably from 15% to 25% by weight.
• the amount of water in the cosmetic cleansing composition is at most 4% by weight and preferably at most 3% by weight.
• the cosmetic cleansing compositions according to the present invention may also comprise an effective amount (in general up to 10% by weight, but greater amounts may be used) of a functional additive, selected from the group consisting of perfumes, chelating or sequestering agents (like EDTA) , preservatives, bactericides, herbs (or herb extracts) , vitamins, buffering substances, moisturizers, emollients (such as esters of fatty acids and/or fatty alcohols) , viscosity controlling agents (such as monohydric alcohols with 2 to 8 carbon atoms) , anti-oxidants, dyes, lather boosters (such as higher alkyl amine oxides) , and mixtures thereof .
• a functional additive selected from the group consisting of perfumes, chelating or sequestering agents (like EDTA) , preservatives, bactericides, herbs (or herb extracts) , vitamins, buffering substances, moisturizers, emollients (such as esters of fatty acids
• the viscosity of the cosmetic cleansing composition as measured with a rotation viscosimeter at 20°C using spindle No SV1 is from 6,500 to 15,000 mPas, preferably from 7,000 to 12,000 mPas.
• the water-soluble capsule material is preferably gelatin, but other material like polyvinyl alcohol may be used.
• the release time of the capsule may be controlled by the selection of the wall thickness of the capsule and the type of gelatin (different Bloom strength) .
• the capsule may have a well thickness of 0.1 mm to 1 mm and a volume of for example 5 ml .
• a cosmetic cleansing composition was prepared by mixing the following ingredients (in % by weight)
• Citric acid 60 wt% aqueous solution
• Citric acid 60 wt% aqueous solution
• the lauric acid ester of ethyl glucoside contained 65.5% by weight of mono-ester, 14.8% by weight of di-ester, 19.1% by weight of tri-ester and 0.6% by weight of higher ester.
• Polysorbate-20 (Trade Mark; ex. Atlas Chem.) is poly- oxyethylene (20) sorbitan monolaurate in which on an average 20 moles of ethylene oxide are present, having a HLB value of 16.7 and a viscosity at 25°C of 330 cSt (mm 2 S "1 ) .
• Sheets of gelatin were made and passed through a capsule making machine in a manner known per se, producing capsules having a wall thickness of 0.2-0.7 mm and a volume of 5 ml, which were filled with the above prepared cosmetic cleansing composition.
• Example 1 was repeated, now using the following formulations (ingredients in % by weight of the total composition) :
• Polysorbate-20 (as in Example 1) 20 % 20 % Ethanol (96%) 1 % 4 % Perfume 0.10% 0.10%
• gelatin capsules filled with the formulations as described in Example 1 upon use yielded a copiously foaming, mild to the skin cosmetic cleansing composition.

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• Health & Medical Sciences (AREA)
• Life Sciences & Earth Sciences (AREA)
• Animal Behavior & Ethology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Veterinary Medicine (AREA)
• Birds (AREA)
• Epidemiology (AREA)
• Emergency Medicine (AREA)
• Dermatology (AREA)
• Cosmetics (AREA)
• Detergent Compositions (AREA)

Priority Applications (1)

Applications Claiming Priority (4)

Publications (1)

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• 1996
  • 1996-02-05 WO PCT/EP1996/000541 patent/WO1996024328A1/en not_active Application Discontinuation
  • 1996-02-05 EP EP96904035A patent/EP0808152A1/de not_active Ceased
  • 1996-02-05 BR BR9607118A patent/BR9607118A/pt not_active Application Discontinuation
  • 1996-02-05 CN CN96191814A patent/CN1173814A/zh active Pending
  • 1996-02-05 KR KR1019970705351A patent/KR19980701954A/ko not_active Application Discontinuation
  • 1996-02-05 JP JP8524001A patent/JPH10513189A/ja active Pending
  • 1996-02-05 AU AU47892/96A patent/AU4789296A/en not_active Abandoned

Non-Patent Citations (1)

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