US4725431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of water-in-oil emulsion antiperspirants
Assignee: Procter and Gamble Co
•
Filing: 1985-12-26
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Granted: 1988-02-16
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Expires: 2005-12-26
Abstract
Abstract Method for preparing an antiperspirant composition of the water-in-oil emulsion type having improved application and aesthetic properties which comprises emulsyfing the aqueous phase in the oil phase in the presence of about 1 to 3% by weight of at least one C12 to C20 saturated fatty acid ester of polyglycerol containing about 2 to 10 repeating glycerol units.
Inventors
- 👤 Joseph C. Hourihan
- 👤 Helga Krevald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:14
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/0216; A61K8/0229; A61K8/04; A61K8/06; A61K8/064; A61K8/18; A61K8/30; A61K8/33; A61K8/39; A61Q; A61Q15/00; Y; Y10; Y10S; Y10S424/00; Y10S424/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
123 words
In a method for the preparation of an antiperspirant stick composition of the water-in-oil emulsion type antiperspirant composition having improved application properties, wherein an aqueous solution of an antiperspirant astringent compound is emulsified in a hydrophobic medium selected from the group consisting of water-insoluble oils, waxes, fatty alcohols, fatty acid esters, fatty acid amides, metal salts of alkanolc acid and volatile, silicones as a continuous phase, wherein the improvement comprises emulsifying said aqueous phase in said hydrophobic phase in the presence of from about 1 to 3 percent by weight, based on the weight of said antiperspirant composition, of at least one C 12 -C 20 saturated fatty acid ester of polyglycerol, said polyglycerol containing from about 2 to 10 repeating glycerol units.
Claim 2
Dependent Claim
123 words
In a method for the preparation of an antiperspirant stick composition of the water-in-oil emulsion type antiperspirant composition having improved application properties, wherein an aqueous solution of an antiperspirant astringent compound is emulsified in a hydrophobic medium selected from the group consisting of water-insoluble oils, waxes, fatty alcohols, fatty acid esters, fatty acid amides, metal salts of alkanolc acid and volatile, silicones as a continuous phase, wherein the improvement comprises emulsifying said aqueous phase in said hydrophobic phase in the presence of from about 1 to 3 percent by weight, based on the weight of said antiperspirant composition, of at least one C 12 -C 20 saturated fatty acid ester of polyglycerol, said polyglycerol containing from about 2 to 10 repeating glycerol units.
Claim 3
Dependent Claim
17 words
A method according to claim 1 wherein said hydrophobic phase comprises a volatile cyclic polydimethyl siloxane liquid.
Claim 4
Dependent Claim
21 words
A method according to claim 2 wherein said hydrophobic phase is a waxy matrix comprising a volatile cyclic polydimethyl siloxane liquid.
Claim 5
Dependent Claim
16 words
A method according to claim 3 wherein said hydrophobic phase additionally comprises a solid fatty alkanol.
Claim 6
Dependent Claim
19 words
Methods according to claim 1 to 4 wherein said emulsifying agent is a stearate or isostearate ester of polyglycerol.
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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) | 1991-02-15 | 1991-08-17 | 1992-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-02-15 | 1995-08-17 | 1996-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-02-15 | 1999-08-17 | 2000-02-16 | $7700.00 | Window Closed / Lapsed |