Patent EP0337464A2 successfully refreshed from Google Patents.
EP0337464A2
Expired / Lapsed
EP
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Antiperspirant and method of making same
Assignee: Gillette Co LLC
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Filing: 1989-04-13
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Granted: —
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Expires: 2009-04-13
Abstract
Abstract Antiperspirant effectiveness of basic aluminum chloride is increased by mixing it with monosilicic acid in aqueous solution. The product can be dried to a solid, and the antiperspirant effectiveness does not decrease in contact with water. The product can also be characterized by size exclusion chromatography of its approximately 10% by weight aqueous solution.
Inventors
- 👤 Maria A. Curtin
- 👤 Alan M. Phipps
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 15:45
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/25; A61K8/26; A61K8/28
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
54 words
A method of incrasing the antiperspirant efficacy of basic aluminum chloride, which comprises mixing said chloride with monosilicic acid in aqueous solution the amount of said chloride being from 5% to 20% by weight and the amount of said acid being from 0.03%to 8% by weight based on the weight of said mixed solution.
Claim 2
Independent Claim
54 words
A method of incrasing the antiperspirant efficacy of basic aluminum chloride, which comprises mixing said chloride with monosilicic acid in aqueous solution the amount of said chloride being from 5% to 20% by weight and the amount of said acid being from 0.03%to 8% by weight based on the weight of said mixed solution.
Claim 3
Dependent Claim
25 words
The method as claimed in claim 1, in which the mixing is carried out at a temperature from 5 to 100°C., or at room temperature.
Claim 4
Dependent Claim
22 words
The method as claimed in claim 1 or 2, in which the pH of said mixed solution is from 2 to 4.
Claim 5
Independent Claim
24 words
The method as claimed in any one of claims 1 to 3, in which the amount of said acid is from 0.3 to 3%.
Claim 6
Independent Claim
28 words
The method as claimed in any one of claims 1 to 4, comprising the additional step of drying said mixed solution to provide the solute in solid form.
Claim 7
Dependent Claim
18 words
A product having high antiperspirant efficacy made by the method of any one of claims 1 to 5.
Claim 8
Dependent Claim
21 words
A composition comprising basic aluminum chloride and silicic acid, said composition displaying high antiperspirant efficacy without decrease in contact with water.
Claim 9
Dependent Claim
21 words
A composition comprising basic aluminum chloride and silicic acid, said composition displaying high antiperspirant efficacy without decrease in contact with water.
Claim 10
Dependent Claim
14 words
A composition as claimed in claim 7, in the form of an aqueous solution.
Claim 11
Dependent Claim
72 words
A composition as claimed in claim 7 or 8, wherein a chromatogram of an approximately 10% aqueous solution thereof made by size exclusion chromatography displays two successive peaks containing at least 80% of the total aluminum in said composition, the ratio of the height of the second of said peaks to that of the first being at least 2:1, said ratio displaying no decrease during storage of said solution at room temperature.
Claim 12
Dependent Claim
116 words
A composition as claimed in claim 9, in which said column is: (a) cross-linked dextran having a molecular weight exclusion range of 1000 to 30,000 for globular proteins, and said peaks appear at K 0.47-0.53 and 0.68-0.72 in an eluent of 0.1 M aqueous potassium chloride at pH 3; or (b) porous spherical silica particles approximately 5 µm in diameter having a pore diameter of 10 nm, and said peaks appear at K 0.24-0.30 and 0.35-0.39 in an eluent of 0.01 M aqueous nitric acid; or (c) silica with glycerylpropyl bonded phase particles approximately 5 µm in diameter having a 0.27-0.29 and 0.31-0.34 in an eluent of 0.1 M aqueous potassium chloride adjusted to pH 4.5.
References Cited (Backward Citations)
No citation records indexed.
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