EP0183171A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Method of preparing enhanced efficacy aluminum chlorhydrate antiperspirant and antiperspirant composition
Assignee: Reheis Co Inc
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Filing: 1985-11-19
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Granted: —
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Expires: 2005-11-19
Abstract
Abstract Two-thirds to five-sixths basic aluminum chlorides having enhanced antiperspirant efficacy are produced by heating an aqueous solution containing about 40 to about 50 weight percent of the basic aluminum chloride to a temperature of at least about 130 degrees C for about one to twelve hours in a closed vessel, with the heating time being inversely proportionai to the temperature. Five-sixths basic aluminum chlorides treated in this manner are characterized by a size exclusion chromatogram having a single major peak with its apex at a relative retention time of about 0.75 - 0.79. The basic aluminum chlorides may be incorporated into any of the conventional antiperspirant forms with non-toxic, dermatologically acceptable carriers.
Inventors
- 👤 Robert W. Murray
- 👤 Roger E. Nelson
- 👤 Andrew M. Rubino
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 14:16
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26; C; C01; C01F; C01F7/00; C01F7/48; C01F7/56; C01F7/57; C01P; C01P2002/00; C01P2002/80; C01P2002/87
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
74 words
A method of preparing an approximately two-thirds to five-sixths basic aluminum chloride having enhanced antiperspirant activity comprising providing an aqueous solution containing about 40 to 50 weight percent of approximately two-thirds to five-sixths basic aluminum chloride, heating said solution to a temperature of at least about 130 degrees C for about one to twelve hours, with the heating time being inversely proportional to the temperature, in a closed vessel, and cooling the resulting product.
Claim 2
Independent Claim
74 words
A method of preparing an approximately two-thirds to five-sixths basic aluminum chloride having enhanced antiperspirant activity comprising providing an aqueous solution containing about 40 to 50 weight percent of approximately two-thirds to five-sixths basic aluminum chloride, heating said solution to a temperature of at least about 130 degrees C for about one to twelve hours, with the heating time being inversely proportional to the temperature, in a closed vessel, and cooling the resulting product.
Claim 3
Dependent Claim
17 words
A method according to Claim 1 wherein the product is dried to a solid by spray drying.
Claim 4
Dependent Claim
18 words
A method according to Claim 1 or 2-wherein the solution contains about 50 weight percent basic aluminum chloride.
Claim 5
Independent Claim
24 words
A method according to any of Claims 1 to 3 wherein the basic aluminum chloride has an A1/C1 ratio of about 1/1 to 2.1/1.
Claim 6
Dependent Claim
20 words
A method according to Claim 4 wherein the basic aluminum chloride has an A1/C1 ratio of about 1.9/1 to 2.1/1.
Claim 7
Independent Claim
25 words
A method according to any of Claims 1 to 5 wherein the solution is heated to a temperature of about 130 to 160 degrees C.
Claim 8
Dependent Claim
21 words
A method according to Claim 6 wherein the solution is heated to a temperature of about 140 to 150 degrees C.
Claim 9
Dependent Claim
17 words
A method according to Claim 7 wherein the solution is heated for about 5 to 8 hours.
Claim 10
Dependent Claim
25 words
A method according to Claim 7 wherein the solution is heated to a temperature of about 140 degrees C for about 7 to 8 hours.
Claim 11
Independent Claim
22 words
A method according to any of Claims 1 to 9 wherein the vessel is pressurized by the vapor pressure of the solution.
Claim 12
Dependent Claim
25 words
An approximately two-thirds to five-sixths basic aluminum chloride having enhanced antiperspirant efficacy and made according to the method of any of Claims 1 to 10.
Claim 13
Dependent Claim
34 words
An approximately five-sixths basic aluminum chloride having enhanced antiperspirant efficacy characterized by a size exclusion chromatogram having a single major peak with a relative retention time at its apex of about 0.75 - 0.79.
Claim 14
Dependent Claim
34 words
An approximately five-sixths basic aluminum chloride having enhanced antiperspirant efficacy characterized by a size exclusion chromatogram having a single major peak with a relative retention time at its apex of about 0.75 - 0.79.
Claim 15
Dependent Claim
33 words
A basic aluminum chloride according to Claim 12 wherein the area under said peak indicates at least 60 percent of the aluminum containing species to be within the fraction represented by the peak.
Claim 16
Dependent Claim
26 words
A basic aluminum chloride according to Claim 13 wherein at least 75 percent of the area of the totally included species is under said major peak.
Claim 17
Dependent Claim
28 words
An antiperspirant composition comprising an effective amount of a basic aluminum chloride made according to the method of any of Claims 1-10 and a non-toxic, dermatologically acceptable carrier.
Claim 18
Dependent Claim
18 words
An antiperspirant composition comprising an effective amount of a basic aluminum chloride according to any of Claims 12-14.
Claim 19
Independent Claim
29 words
A method of inhibiting perspiration comprising applying to the human axilla an effective amount of a basic aluminum chloride made according to the method of any of Claims 1-10.
Claim 20
Independent Claim
25 words
A method of inhibiting perspiration comprising applying tc the human axilla an effective amount of a basic aluminum chloride according to any of Claims 12-14.
References Cited (Backward Citations)
No citation records indexed.
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