US4732754A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the preparation of antiperspirant compositions having enhanced efficacy
Assignee: Procter and Gamble Co
•
Filing: 1986-01-10
•
Granted: 1988-03-22
•
Expires: 2006-01-10
Abstract
Abstract Improved antiperspirant compositions having an astringent material suspended in a hydrophobic medium, and emulsions of aqueous solutions of astringent materials in a hydrophobic medium, said compositions having added thereto from 1 to 5% by weight of a C3 to C8 alkanediol compound.
Inventors
- 👤 Helga Krevald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/02; A61K8/0216; A61K8/0229; A61K8/04; A61K8/044; A61K8/06; A61K8/064; A61K8/18; A61K8/19; A61K8/26; A61K8/28; A61K8/30; A61K8/33; A61K8/34; A61K8/345; A61K8/58; A61K8/585; Y; Y10; Y10S; Y10S424/00; Y10S424/05
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
94 words
An improved method for increasing the antiperspirant efficacy of a water-in-oil emulsion antiperspirant or suspension stick, selected from the group consisting of suspensions of an astringent compound in a hydrophobic medium and emulsions of an aqueous solution of an astringent compound in a hydrophobic medium, wherein the improvement comprises incorporating into said composition from about 1 to 5 percent by weight, based on the total weight of said composition, of a saturated C 3 to C 8 alkanediol compound; said diol compound having no more than one carbon atom separating the hydroxy groups thereof.
Claim 2
Dependent Claim
94 words
An improved method for increasing the antiperspirant efficacy of a water-in-oil emulsion antiperspirant or suspension stick, selected from the group consisting of suspensions of an astringent compound in a hydrophobic medium and emulsions of an aqueous solution of an astringent compound in a hydrophobic medium, wherein the improvement comprises incorporating into said composition from about 1 to 5 percent by weight, based on the total weight of said composition, of a saturated C 3 to C 8 alkanediol compound; said diol compound having no more than one carbon atom separating the hydroxy groups thereof.
Claim 3
Dependent Claim
17 words
An improved method in accordance with claim 1 wherein said hydrophobic medium comprises a cyclic polydimethylsiloxane oligomer.
Claim 4
Dependent Claim
21 words
An improved method in accordance with claim 1 wherein said antiperspirant astringent is aluminum chlorohydrate, aluminum zirconium chlorhydrex or aluminum sesquichlorohydrate.
Claim 5
Dependent Claim
25 words
An improved method in accordance with claims 1, 2, or 3 wherein said hydrophobic medium additionally comprises a low-melting, water-insoluble wax compatible with said polydimethylsiloxane.
Claim 6
Dependent Claim
17 words
An improved method in accordance with claims 1, 2, 3, or 4 wherein said alkanediol is 2-methyl-2,4-pentanediol.
Claim 7
Dependent Claim
61 words
An improved water-in-oil antiperspirant emulsion stick composition comprising a hydrophobic medium, a metallic astringent compound, and wherein the improvement comprises from about 1 to 5 percent by weight, based on the total weight of said composition, of a saturated C 3 to C 8 alkanediol compound; said diol compound having no more than one carbon atom separating the hydroxy groups thereof.
Claim 8
Dependent Claim
61 words
An improved water-in-oil antiperspirant emulsion stick composition comprising a hydrophobic medium, a metallic astringent compound, and wherein the improvement comprises from about 1 to 5 percent by weight, based on the total weight of said composition, of a saturated C 3 to C 8 alkanediol compound; said diol compound having no more than one carbon atom separating the hydroxy groups thereof.
Claim 9
Dependent Claim
17 words
A composition in accordance with claim 6 wherein said hydrophobic medium comprises a volatile cyclic polydimethylsiloxane oligomer.
Claim 10
Dependent Claim
20 words
A composition in accordance with claim 6 wherein said antiperspirant astringent is aluminum chlorohydrate, aluminum zirconium chlorhydrex or aluminum sesquichlorohydrate.
Claim 11
Dependent Claim
21 words
A composition in accordance with claim 6 wherein said hydrophobic medium additionally comprises a low-melting, water-insoluble wax compatible with said polydimethylsiloxane.
Claim 12
Dependent Claim
12 words
A composition in accordance with claim 6 wherein said alkanediol is 2-methyl-2,4-pentanediol.
References Cited (Backward Citations)
US3472940A
Cited
US3541205A
Cited
US4264586A
Cited
US4280994A
Cited
US4350605A
Cited
GB2013085A
Cited
US4229432A
Cited
US4268499A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-03-22 | 1991-09-21 | 1992-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-22 | 1995-09-21 | 1996-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-22 | 1999-09-21 | 2000-03-22 | $7700.00 | Window Closed / Lapsed |