US4057622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Water-in-oil creams with polymeric emulsifiers
Assignee: Henkel AG and Co KGaA
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Filing: 1976-03-25
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Granted: 1977-11-08
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Expires: 1996-03-25
Abstract
Abstract Cosmetic emulsions containing from 2 to 20% by weight of polymeric emulsifiers capable of forming water-in-oil creams comprising a copolymer of N-vinylimidazole, an alkyl (meth)acrylate and optionally vinyl acetate; 20 to 75% by weight of water; and the remainder to 100% by weight of a cosmetically-acceptable oily substance.
Inventors
- 👤 Brigitte Hase
- 👤 Christian Hase
- 👤 Joachim Galinke
- 👤 Bernd Wegemund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:53
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/06; A61K8/064; A61K8/18; A61K8/72; A61K8/81; A61K8/817; A61Q; A61Q19/00; Y; Y10; Y10S; Y10S424/00; Y10S424/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
A cosmetic emulsion of the water-in-oil type consisting essentially of (1) from 2% to 20% by weight of a polymeric emulsifier capable of forming water-in-oil creams selected from the group consisting of (i) a copolymer of (a) N-vinylimidazole, (b) acrylates of the formula ##STR3## wherein R is a member having from 6 to 24 carbon atoms selected from the group consisting of alkyl, cycloalkyl, alkylcycloalkyl and oleyl, and R' is a member selected from the group consisting of hydrogen and methyl, and (c) vinyl acetate wherein the molar ratios of (a) + (c) : (b) are from 1:1 to 1:20 and the molar ratios of (c) : (a) are 0:1 to 3:1, and (ii) salts thereof with organic or inorganic acids, (2) from 20% to 75% by weight of water and (3) the remainder to 100% by weight of a cosmetically-acceptable oily phase.
Claim 2
Dependent Claim
143 words
A cosmetic emulsion of the water-in-oil type consisting essentially of (1) from 2% to 20% by weight of a polymeric emulsifier capable of forming water-in-oil creams selected from the group consisting of (i) a copolymer of (a) N-vinylimidazole, (b) acrylates of the formula ##STR3## wherein R is a member having from 6 to 24 carbon atoms selected from the group consisting of alkyl, cycloalkyl, alkylcycloalkyl and oleyl, and R' is a member selected from the group consisting of hydrogen and methyl, and (c) vinyl acetate wherein the molar ratios of (a) + (c) : (b) are from 1:1 to 1:20 and the molar ratios of (c) : (a) are 0:1 to 3:1, and (ii) salts thereof with organic or inorganic acids, (2) from 20% to 75% by weight of water and (3) the remainder to 100% by weight of a cosmetically-acceptable oily phase.
Claim 3
Dependent Claim
39 words
The cosmetic emulsion of claim 1 wherein said cosmetically-acceptable oily phase has a melting point above 30° C and is selected from the group consisting of vegetable fat, animal fat, wax, higher fatty alcohol, mineral oil and silicone oil.
Claim 4
Dependent Claim
37 words
The cosmetic emulsion of claim 1 wherein said polymeric emulsifier is present in an amount of from 5% to 10% by weight and said water is present in an amount of from 45% to 65% by weight.
Claim 5
Dependent Claim
17 words
The cosmetic emulsion of claim 1 wherein R is alkyl having from 8 to 14 carbon atoms.
Claim 6
Dependent Claim
21 words
The cosmetic emulsion of claim 1 wherein the molar ratio of (a) + (c) : (b) is from 1:3 to 1:12.
Claim 7
Dependent Claim
20 words
The cosmetic emulsion of claim 1 wherein said polymeric emulsifier has an average molecular weight of from 2000 to 100,000.
Claim 8
Dependent Claim
16 words
The cosmetic emulsion of claim 6 wherein said average molecular weight is from 3000 to 20,000.
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) | 1980-11-07 | 1981-05-09 | 1981-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-11-07 | 1985-05-09 | 1985-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-11-07 | 1989-05-09 | 1989-11-08 | $7700.00 | Window Closed / Lapsed |