US3947557A
Expired / Lapsed
US
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Zinc complexes of basic aluminum bromides and methods of making same
Assignee: Reheis Co Inc
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Filing: 1975-06-03
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Granted: 1976-03-30
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Expires: 1995-06-03
Abstract
Abstract Alcohol soluble complexes of basic aluminum bromides may be prepared by adding zirconyl or zinc bromide or chloride, or zirconyl hydroxychloride or hydroxybromide, or mixtures of the above chlorides and bromides to an aqueous solution of five-sixths basic aluminum bromide, and drying the resulting mixture to a substantially friable solid, such as by vacuum or spray drying. The complexes preferably have an Al/Zn or Al/Zr mol ratio of about 3:1 to 20:1, and the complex solids preferably contain about 15 to 30 weight percent water by Karl Fischer analysis. Such complex solids have a high degree of solubility in anhydrous alcohol and a high compatibility with halogenated hydrocarbons. These properties make the complexes suitable for aerosol formulations and particularly antiperspirant compositions.
Inventors
- 👤 John L. Jones
- 👤 Andrew M. Rubino
- 👤 Charles B. Lindahl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:59
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/28; C; C01; C01F; C01F7/00; C01F7/48; C01F7/64; C01G; C01G25/00; C01G25/006; C01P; C01P2006/00; C01P2006/80; C01P2006/82
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
89 words
A method of preparing alcohol soluble solid complexes of five-sixths basic aluminum bromides comprising the steps of providing an aqueous solution of five-sixths basic aluminum bromide having the general empirical formula: Al.sub.2 (OH).sub.6.sub.-x Br.sub.x in which x equals about 0.9 to 1.2; adding to said aqueous solution a substance selected from the group consisting of zinc chloride, zinc bromide, and combinations of either or both of said zinc halides with zirconyl chloride, zirconyl bromide, zirconyl hydroxychloride and/or zirconyl hydroxybromide; and drying the resulting mixture to a substantially friable solid.
Claim 2
Independent Claim
89 words
A method of preparing alcohol soluble solid complexes of five-sixths basic aluminum bromides comprising the steps of providing an aqueous solution of five-sixths basic aluminum bromide having the general empirical formula: Al.sub.2 (OH).sub.6.sub.-x Br.sub.x in which x equals about 0.9 to 1.2; adding to said aqueous solution a substance selected from the group consisting of zinc chloride, zinc bromide, and combinations of either or both of said zinc halides with zirconyl chloride, zirconyl bromide, zirconyl hydroxychloride and/or zirconyl hydroxybromide; and drying the resulting mixture to a substantially friable solid.
Claim 3
Dependent Claim
11 words
Alcohol soluble complex solids formed by the method of claim 1.
Claim 4
Dependent Claim
36 words
A method according to claim 1 wherein said mixture is dried to a water content of about 15 to 30 weight percent determined by Karl Fischer analysis and based on the total weight of the solid.
Claim 5
Dependent Claim
20 words
A method according to claim 1 wherein said mixture is vacuum dried at a maximum temperature of about 40° C.
Claim 6
Dependent Claim
12 words
A method according to claim 1 wherein said mixture is spray dried.
Claim 7
Dependent Claim
27 words
Alcohol soluble complexes of five-sixths basic aluminum bromides formed by the method of claim 1 wherein the Al/Zn or Al/Zr mol ratio is about 3:1 to 20:1.
Claim 8
Dependent Claim
55 words
Alcohol soluble complexes of five-sixths basic aluminum bromides formed by the method of claim 1 and having a halohydrocarbon compatibility of at least 100 cc's of CCl 4 , when the CCl 4 is admixed with 60 grams of a 30 weight percent solution of said complex in SDA-40 alcohol, before a permanent cloudiness occurs.
Claim 9
Dependent Claim
15 words
Alcohol soluble complexes of five-sixths basic aluminum bromides formed by the method of claim 3.
Claim 10
Dependent Claim
36 words
Alcohol soluble complex solids according to claim 2 wherein said solids have a water content of about 15 to 30 weight percent determined by Karl Fischer analysis and based on the total weight of the solid.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |