Patent US4526780A successfully refreshed from Google Patents.
US4526780A
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US
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Anhydrous antiperspirant composition
Assignee: Colgate Palmolive Co
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Filing: 1983-04-25
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Granted: 1985-07-02
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Expires: 2003-04-25
Abstract
Abstract A novel stable anhydrous paste or cream composition having superior ultradry characteristics when applied to the skin comprising an antiperspirant or deodorant agent and an oil absorbent material homogeneously dispersed in a vehicle comprising about 25-55% of a volatile silicone and a clay suspending/thickening agent in the form of a gel, preferably a bentonite gel. Additionally preferable ingredients are stability agents to prevent syneresis (oil separation) such as the fatty acid metal salts, more specifically zinc, aluminum, calcium, magnesium, and lithium stearates. Additional thickeners, binders, suspending agents, emollients and nonionic emulsifiers may be added as desired to further enhance the aesthetics of the cream product. The resultant dry-feel cream products spread easily, are not wet, oily or sticky, and vanish almost immediately on rub-in when applied to the skin.
Inventors
- 👤 Frank W. Marschner
- 👤 Divaker B. Kenkare
- 👤 James H. Bowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:47
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K8/18; A61K8/19; A61K8/26; A61K8/28; A61K8/30; A61K8/58; A61K8/585; A61K8/72; A61K8/73; A61K8/732; A61K2800/00; A61K2800/20; A61K2800/30; A61K2800/31
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
108 words
A stable dry-feel essentially anhydrous cream composition comprising about 10-30% by weight of an antiperspirant and/or deodorant active agent and about 10-50% by weight of an oil absorbent powdered material selected from the group consisting of talc, starches, clay, microcrystalline cellulose, grain flours, and mixtures thereof, homogeneously dispersed in a nonpolar vehicle comprising about 25-55% by weight of a volatile silicone, and about 1-20% by weight of a gelatinized clay in a nonpolar vehicle as suspending/thickening agent selected from the group consisting of bentonite gels, hectorite gels, magnesium aluminum silicate gels, and hydrophobically treated bentonite gels prepared by reacting bentonite in a cation exchange system with an amine.
Claim 2
Dependent Claim
108 words
A stable dry-feel essentially anhydrous cream composition comprising about 10-30% by weight of an antiperspirant and/or deodorant active agent and about 10-50% by weight of an oil absorbent powdered material selected from the group consisting of talc, starches, clay, microcrystalline cellulose, grain flours, and mixtures thereof, homogeneously dispersed in a nonpolar vehicle comprising about 25-55% by weight of a volatile silicone, and about 1-20% by weight of a gelatinized clay in a nonpolar vehicle as suspending/thickening agent selected from the group consisting of bentonite gels, hectorite gels, magnesium aluminum silicate gels, and hydrophobically treated bentonite gels prepared by reacting bentonite in a cation exchange system with an amine.
Claim 3
Dependent Claim
21 words
The cream according to claim 1, wherein the gelatinized clay suspending/thickening agent contains about 0.1-10% clay gelled in a nonpolar vehicle.
Claim 4
Dependent Claim
40 words
The cream according to claim 1, which additionally contains about 0.1-6% of a fatty acid metal salt selected from the group consisting of zinc, aluminum, lithium, calcium and magnesium salts of C 12 -C 22 saturated and unsaturated fatty acids.
Claim 5
Dependent Claim
27 words
The anhydrous cream according to claim 1, wherein the antiperspirant agent is selected from the group consisting of aluminum and zirconium salts or complexes and mixtures thereof.
Claim 6
Dependent Claim
41 words
The cream according to claim 1, wherein the gel is a bentonite gel and the non-polar vehicle is selected from the group consisting of fatty esters, volatile silicone, volatile hydrocarbon, fatty alcohols, polyoxyethylene fatty alcohols, polyoxypropylene fatty alcohols and mixtures thereof.
Claim 7
Dependent Claim
36 words
The cream according to claim 5, which additionally contains about 0.1-5% by weight of a nonionic emulsifier selected from the group consisting of polyoxyethylene fatty ethers, polyoxyethylene fatty alcohols, polyoxypropylene fatty ethers and polyoxypropylene fatty alcohols.
Claim 8
Dependent Claim
31 words
The cream according to claim 4, wherein the antiperspirant agent is aluminum chlorohydroxide plus zirconium hydroxychloride and glycine complex, the volatile silicone is cyclomethicone, and the oil absorbent material is starch.
Claim 9
Dependent Claim
21 words
The cream according to claim 3, which additionally contains about 0.5-10% by weight of at least one higher fatty acid amide.
Claim 10
Dependent Claim
77 words
The method of preparing the anhydrous cream defined in claim 1, which comprises mixing the clay gel suspending agent with the volatile silicone oil vehicle and heating to a temperature of about 140°-220° F. until a viscous solution is formed, sequentially mixing and blending the antiperspirant/deodorant powder and the oil absorbent powder with said viscous solution to form a stable viscous warm pourable mixture, homogenizing said warm pourable mixture and cooling to form a homogeneous non-pourable cream.
Claim 11
Dependent Claim
29 words
The method according to claim 9, wherein the clay gel is formed in situ from clay, non-polar vehicle and wetting agent after homogenizing the mixture in the silicone vehicle.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |