US5928632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surfactant free rinse-off skin conditioning formulation
Assignee: Kao USA Inc
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Filing: 1997-09-19
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Granted: 1999-07-27
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Expires: 2017-09-19
Abstract
Abstract A surfactant free skin conditioning composition comprising a primary emollient of a gelled mineral oil, and emulsion stabilizer including at least one of a high molecular weight homopolymer of polyacrylic acid or a copolymer having a major proportion of a monoolefinically unsaturated carboxylic monomer or its anhydride, of 3 to 6 carbon atoms, and a minor proportion of a long chain acrylate or methacrylate ester monomer, gives superior deposition of skin conditioning emollients when applied to human skin, and rinsed off.
Inventors
- 👤 Rick Reusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:46
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/06; A61K8/062; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8147; A61K8/90; A61K2800/00; A61K2800/20; A61K2800/30; A61K2800/33
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
171 words
A surfactant free skin conditioning composition, comprising an oil-in-water emulsion, comprising: a) a first emollient comprised of gelled mineral oil comprised of mineral oil in a copolymer mixture comprising an ethylene/propylene/styrene copolymer and a butylene/ethylene/styrene copolymer present in an amount of 15-30% by weight of the total composition; b) an emulsion stabilizer selected from the group consisting of a modified polymer, a homopolymer of polyacrylic acid, and mixtures thereof, wherein said modified polymer is a copolymer having a major proportion of a monoolefinically unsaturated carboxylic acid monomer or its anhydride of 3 to 6 carbon atoms and a minor portion of a long chain acrylate or methacrylate ester monomer, and said homopolymer is lightly cross-linked having a molecular weight (weight average) of 1 million-4 million, said emulsion stabilizer being present in an amount of 0.1-3.0% by weight of the total composition; c) 0-10% of at least one of an emollient comprising an alkyl ester of at least 16 carbon atoms, a fragrance, a colorant and a preservative; and the balance water.
Claim 2
Dependent Claim
171 words
A surfactant free skin conditioning composition, comprising an oil-in-water emulsion, comprising: a) a first emollient comprised of gelled mineral oil comprised of mineral oil in a copolymer mixture comprising an ethylene/propylene/styrene copolymer and a butylene/ethylene/styrene copolymer present in an amount of 15-30% by weight of the total composition; b) an emulsion stabilizer selected from the group consisting of a modified polymer, a homopolymer of polyacrylic acid, and mixtures thereof, wherein said modified polymer is a copolymer having a major proportion of a monoolefinically unsaturated carboxylic acid monomer or its anhydride of 3 to 6 carbon atoms and a minor portion of a long chain acrylate or methacrylate ester monomer, and said homopolymer is lightly cross-linked having a molecular weight (weight average) of 1 million-4 million, said emulsion stabilizer being present in an amount of 0.1-3.0% by weight of the total composition; c) 0-10% of at least one of an emollient comprising an alkyl ester of at least 16 carbon atoms, a fragrance, a colorant and a preservative; and the balance water.
Claim 3
Dependent Claim
31 words
The composition of claim 1, wherein said composition further comprises an agent which neutralizes acrylic acid moieties in said emulsion stabilizer, and wherein the pH of said composition is between 5.5-7.0.
Claim 4
Dependent Claim
33 words
The composition of claim 1, wherein said composition is in the form of an oil-in-water emulsion, which breaks upon application of said composition to human skin, releasing said first emollient from said emulsion.
Claim 5
Dependent Claim
19 words
The composition of claim 1, wherein said emulsion stabilizer comprises a mixture of said modified polymer and said homopolymer.
Claim 6
Dependent Claim
22 words
The composition of claim 1, wherein said composition is a creamy white lotion having a viscosity of 3000-5000 cps at room temperature.
Claim 7
Dependent Claim
36 words
The composition of claim 1, wherein said emulsion comprises a second emollient selected from the group consisting of silicone oils, alkyl esters of at least 16 carbon atoms, petrolatum, ungelled mineral oil, lanolin and mixtures thereof.
Claim 8
Dependent Claim
37 words
The composition of claim 1, wherein said emulsion stabilizer is a mixture of said modified polymer and said homopolymer, said composition further comprises triethanolanime, a preservative suppressing the growth of bacteria, mold and yeast and octyl isononanoate.
Claim 9
Dependent Claim
52 words
A method of conditioning skin, comprising applying a skin conditioning effective amount of the composition of claim 1 to said skin, allowing said to emulsion to break and release mineral oil to said skin, and allowing said mineral oil to remain on the skin for a time sufficient to effect skin conditioning.
Claim 10
Dependent Claim
22 words
The method of claim 8, wherein excess mineral oil deposited on said skin is rinsed away following the breaking of said emulsion.
Claim 11
Dependent Claim
18 words
The method of claim 9, wherein, after rinsing, 3-25% by weight of said composition remains on said skin.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-07-26 | 2003-01-25 | 2003-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-07-26 | 2007-01-25 | 2007-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-07-26 | 2011-01-25 | 2011-07-27 | $7700.00 | Window Closed / Lapsed |