US3876758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing alcohol solutions of aluminum chlorhydroxides for antiperspirant use and for other uses and compositions containing the same
Assignee: Individual
•
Filing: 1969-12-01
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Granted: 1975-04-08
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Expires: 1989-12-01
Abstract
Abstract A process is provided for preparing alcohol solutions of aluminum chlorhydroxides by reaction of a solution of aluminum chloride in an aliphatic alcohol with a blend or complex of polyol and an aluminum chlorhydroxide, thereby forming a solution in the alcohol of an aluminum chlorhydroxide having a lower Al.sub.2 O.sub.3 :Cl mole ratio than the starting material. The process avoids the use of an aluminum isopropylate, and the resulting solutions do not form precipitates on standing, and have a good stability. They are accordingly particularly useful for the preparation of nongelling stable antiperspirant aerosol and other applications, where an alcohol-soluble antiperspirant is desirable.
Inventors
- 👤 Stewart M Beekman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/26; A61K8/30; A61K8/33; A61K8/34; A61K8/345; C; C01; C01F; C01F7/00; C01F7/48; C01F7/56; C01F7/57; C01P; C01P2006/00; C01P2006/20; Y; Y10; Y10S; Y10S424/00; Y10S424/05
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
222 words
A PROCESS FOR PREPARING ALCOHOL-SOLUBLE ALUMINUM CHLORHYDROXIDE-POLYOL COMPOSITIONS EFFECTIVE AS ANTI-PERSPIRANTS AND HAVING A HIGH CONTENT OF ALUMINA, WHICH COMPRISES MIXING A SOLUTION OF ALUMINUM CHLORIDE IN A LOWER ALIPHATIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, ISOPROPANOL, N-PROPANOL AND BUTANOL, WITH AN ALUMINUM CHLORHYDROXIDE-POLYOL COMPOSITION, THE ALUMINUM CHLORHYDROXIDE HAVING THE FORMULA: AI2CI(6-X) (OH) X WHERE X IS A NUMBER FROM TWO TO FIVE, AND THE POLYOL BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL; PROPYLENE GLYCOL; 1,3-BUTANEDIOL; 1,4-BUTANEDIOL; DIETHYLENE GLYCOLDIPROPYLENE GLYCOL; TRIETHYLENE GLYCOL; TETRAETHYLENE GLYCOL; GLYCEROL; DIGLYCEROL; 1,2,6-HEXANETRIOL; 1,2,4-BUTANETRIOL; 2METHYL-2-ETHYL-1,3-PROPANEDIOL; 2-METHYL-2,4-PENTANEDIOL; 1,1,1-TRIMETHYLOLPROPANE; 2,2-DIMETHYL-1,3-DIHYDROXY PRNTANE; POLYETHYLENE GLYCOL; P-XYLENE A,A-DIOL; POLYEPICHLORPLDRIN; BUTYNE-1,4-DIOL; 2-ETHYL-1,3-HEXANE-DIOL; AND POLYPROPLYENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF 400 THE ALUMINUM CHLORHYDROXIDE AND THE POLYOL BEING TAKEN IN PROPORTIES TO GIVE AN ALUMINUM CHLORHYDROXIDE-POLYOL COMPOSITION HAVING AN ALUMIA:POLYOL RATIO WITHIN THE RANGE FROM ABOUT 2.04:1 TO ABOUT 10:1, AN AI2O3:CI RATIO WITHIN THE RANGE FROM ABOUT 1:5 TO ABOUT 1:1.05, AND AN AI2O3:OH RATIO WITHIN THE RANGE FROM ABOUT 1:1 TO ABOUT 1:4.95; AND REACTING THE MIXTURE AT A TEMPERATURE AT WHICH REACTION PROCEEDS TO FORM A STABLE, HOMOGENEOUS SOLUTION IN THE ALCOHOL OF AN ALUMINUM CHLOROHYDROXIDE-POLYOL COMPOSITION HAVING AN ALUMINA:POLYOL RATIO WITHIN THE RANGE FROM ABOUT 2.04:1 TO ABOUT 10:1 THAT IS LOWER THAN THE ALUMINA : POLYOL RATIO OF THE ALUMINIUM CHLORHYDROXIDE-POLYOL COMPOSITION REACTANT.
Claim 2
Dependent Claim
222 words
A PROCESS FOR PREPARING ALCOHOL-SOLUBLE ALUMINUM CHLORHYDROXIDE-POLYOL COMPOSITIONS EFFECTIVE AS ANTI-PERSPIRANTS AND HAVING A HIGH CONTENT OF ALUMINA, WHICH COMPRISES MIXING A SOLUTION OF ALUMINUM CHLORIDE IN A LOWER ALIPHATIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, ISOPROPANOL, N-PROPANOL AND BUTANOL, WITH AN ALUMINUM CHLORHYDROXIDE-POLYOL COMPOSITION, THE ALUMINUM CHLORHYDROXIDE HAVING THE FORMULA: AI2CI(6-X) (OH) X WHERE X IS A NUMBER FROM TWO TO FIVE, AND THE POLYOL BEING SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL; PROPYLENE GLYCOL; 1,3-BUTANEDIOL; 1,4-BUTANEDIOL; DIETHYLENE GLYCOLDIPROPYLENE GLYCOL; TRIETHYLENE GLYCOL; TETRAETHYLENE GLYCOL; GLYCEROL; DIGLYCEROL; 1,2,6-HEXANETRIOL; 1,2,4-BUTANETRIOL; 2METHYL-2-ETHYL-1,3-PROPANEDIOL; 2-METHYL-2,4-PENTANEDIOL; 1,1,1-TRIMETHYLOLPROPANE; 2,2-DIMETHYL-1,3-DIHYDROXY PRNTANE; POLYETHYLENE GLYCOL; P-XYLENE A,A-DIOL; POLYEPICHLORPLDRIN; BUTYNE-1,4-DIOL; 2-ETHYL-1,3-HEXANE-DIOL; AND POLYPROPLYENE GLYCOL HAVING AN AVERAGE MOLECULAR WEIGHT OF 400 THE ALUMINUM CHLORHYDROXIDE AND THE POLYOL BEING TAKEN IN PROPORTIES TO GIVE AN ALUMINUM CHLORHYDROXIDE-POLYOL COMPOSITION HAVING AN ALUMIA:POLYOL RATIO WITHIN THE RANGE FROM ABOUT 2.04:1 TO ABOUT 10:1, AN AI2O3:CI RATIO WITHIN THE RANGE FROM ABOUT 1:5 TO ABOUT 1:1.05, AND AN AI2O3:OH RATIO WITHIN THE RANGE FROM ABOUT 1:1 TO ABOUT 1:4.95; AND REACTING THE MIXTURE AT A TEMPERATURE AT WHICH REACTION PROCEEDS TO FORM A STABLE, HOMOGENEOUS SOLUTION IN THE ALCOHOL OF AN ALUMINUM CHLOROHYDROXIDE-POLYOL COMPOSITION HAVING AN ALUMINA:POLYOL RATIO WITHIN THE RANGE FROM ABOUT 2.04:1 TO ABOUT 10:1 THAT IS LOWER THAN THE ALUMINA : POLYOL RATIO OF THE ALUMINIUM CHLORHYDROXIDE-POLYOL COMPOSITION REACTANT.
Claim 3
Dependent Claim
42 words
A process according to claim 1, which comprises heating the reaction mixture at a temperature within the range from about 40.degree.C. to about 80.degree.C., or up to the boiling point of the alcohol, at atmospheric pressure for from 1/2 to 6 hours.
Claim 4
Dependent Claim
23 words
A process according to claim 1, which comprises concentrating the reaction mixture so as to reduce the water content to less than 5%.
Claim 5
Dependent Claim
12 words
A process according to claim 1 wherein the polyol is 1,2-propylene glycol.
Claim 6
Dependent Claim
11 words
A process according to claim 1 wherein the polyol is trimethylolpropane.
Claim 7
Dependent Claim
61 words
A process according to claim 1 which comprises reacting from 1 to 8 moles of aluminum chloride and from 60 to 1 moles of aluminum chlorhydroxide, to produce an aluminum chlorhydroxide having an Al.sub.2 O.sub.3 :Cl ratio within the range from about 1:5 to about 1:1.05 and an Al.sub.2 O.sub.3 :OH ratio within the range from about 1:1 to about 1:4.95.
Claim 8
Dependent Claim
24 words
A process according to claim 1 in which the aluminum chlorhydroxide product has a basicity within the range from about 0.166 to about 0.825.
Claim 9
Dependent Claim
49 words
An aluminum chlorhydroxide-polyol composition having effective antiperspirant properties and prepared according to the process of claim 1, in the form of a solution in from 10 to 60% of the lower aliphatic alcohol by weight of the composition and containing less than 5.0% water by weight of the composition.
Claim 10
Dependent Claim
34 words
An aluminum chlorohydroxide-polyol composition according to claim 8 in the form of a solution of the aluminum chlorhydroxide-polyol product in a mixture of a polyol and ethanol containing less than 0.5% water by weight.
Claim 11
Dependent Claim
21 words
An aluminum chlorhydroxide-polyol composition according to claim 8 in the form of a solution of the aluminum chlorhydroxide-polyol product in ethanol.
Claim 12
Dependent Claim
26 words
An effective antiperspirant composition according to claim 8 in which the aluminum chlorhydroxide-polyol product has a basicity within the range from about 0.7 to about 0.825.
Claim 13
Dependent Claim
56 words
An aluminum chlorhydroxide-polyol composition according to claim 8 comprising from about 25 to 75% of a propellant having a vapor pressure at room temperature within the range from about 25 to about 60 psi., selected from the group consisting of dichlorotetrafluoroethane, dichlorotrifluoromethane, octafluorocyclobutane, trichloromonofluoromethane, and mixtures of dichlorodifluoromethane and trichloromonofluoromethane, the composition being stable and non-gelling.
Claim 14
Dependent Claim
23 words
An aluminum chlorhydroxide-polyol composition according to claim 12 having dispersed therein from 0.5 to 5% of an alcohol-insoluble aluminum chlorhydroxide in finely-divided form.
References Cited (Backward Citations)
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US3288681A
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US3523130A
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US3420932A
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US3523129A
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US3507896A
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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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |