US3887692A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microspherical basic aluminum halides and method of making same
Assignee: Reheis Co Inc
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Filing: 1972-07-10
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Granted: 1975-06-03
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Expires: 1992-07-10
Abstract
Abstract Basic aluminum halides in particulate form wherein the particles are solid and spherical in shape having a diameter of from 2 to 500 microns. The disclosure further refers to aerosol antiperspirant compositions containing such halides along with a propellant. A process is disclosed for making such halides in microspherical form wherein an aqueous solution of the halide is discharged into the vortex of a whirling liquid, the liquid being an organic alcohol having from 4 to 5 carbon atoms and containing a branch chain methyl group. The halide, in microspherical form is separated from the alcohol and may be incorporated in an aerosol antiperspirant composition. This composition is free flowing, does not settle to make a firm cake and does not clog the aerosol equipment.
Inventors
- 👤 William S Gilman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:12
CPC Classifications
A; A61; A61Q; A61Q15/00; A61K; A61K8/00; A61K8/02; A61K8/0241; A61K8/025; A61K8/04; A61K8/046; A61K8/18; A61K8/19; A61K8/26; B; B01; B01J; B01J2/00; B01J2/02; B01J2/06; B01J2/08; C; C01; C01F; C01F7/00; C01F7/48; C01F7/56; C01F7/57; A61K2800/00; A61K2800/40; A61K2800/41; A61K2800/412; C01P; C01P2004/00; C01P2004/30; C01P2004/32; C01P2004/60; C01P2004/61
Claims Analysis
Total Claims: 23
Claim 1
Independent Claim
102 words
A BASIC ALUMINUM HALIDE IN SOLID MICROSPHERICAL FORM IN WHICH THE SOLID SPHERICAL PARTICLES HAVE A DIAMETER OF 2 TO 500 MICRONS PREPARED BY A PROCESS COMPRISING THE STEPS OF DISCHARGING AN AQUEOUS SOLUTION OF A HALIDE HAVING THE FORMULA ALN(OH)XQY.XH2O WHEREIN X + Y = 3N, X IS 2 OR MORE, X IS 2 TO 4 AND Q IS CHLORINE OR BROMINE OR MIXTURES THEREOF, IN FINELY DIVIDED FORM, INTO THE CAVITY IN A WHIRLING VORTEX OF AN ORGANIC ALCOHOL HAVING 4 OR 5 CARBON ATOMS AND A BRANCHED METHYL GROUP, AND SEPARATING THE RESULTING ALUMINUM HALIDE MICROSPHERES FROM SAID ALCOHOL.
Claim 2
Dependent Claim
102 words
A BASIC ALUMINUM HALIDE IN SOLID MICROSPHERICAL FORM IN WHICH THE SOLID SPHERICAL PARTICLES HAVE A DIAMETER OF 2 TO 500 MICRONS PREPARED BY A PROCESS COMPRISING THE STEPS OF DISCHARGING AN AQUEOUS SOLUTION OF A HALIDE HAVING THE FORMULA ALN(OH)XQY.XH2O WHEREIN X + Y = 3N, X IS 2 OR MORE, X IS 2 TO 4 AND Q IS CHLORINE OR BROMINE OR MIXTURES THEREOF, IN FINELY DIVIDED FORM, INTO THE CAVITY IN A WHIRLING VORTEX OF AN ORGANIC ALCOHOL HAVING 4 OR 5 CARBON ATOMS AND A BRANCHED METHYL GROUP, AND SEPARATING THE RESULTING ALUMINUM HALIDE MICROSPHERES FROM SAID ALCOHOL.
Claim 3
Dependent Claim
101 words
A basic aluminum halide in solid microspherical form in which the solid spherical particles have a diameter of 2 to 500 microns prepared by a process comprising the steps of discharging an aqueous solution of a halide having the formula Aln(OH)xQy.XH2O wherein x + y 3n, x is 2 or more, X is 2 to 4 and Q is chlorine or bromine or mixtures thereof, in finely divided form, into the cavity in a whirling vortex of an organic alcohol having 4 or 5 carbon atoms and a branched methyl group, and separaring the resulting aluminum halide microspheres from said alcohol.
Claim 4
Dependent Claim
101 words
A basic aluminum halide in solid microspherical form in which the solid spherical particles have a diameter of 2 to 500 microns prepared by a process comprising the steps of discharging an aqueous solution of a halide having the formula Aln(OH)xQy.XH2O wherein x + y 3n, x is 2 or more, X is 2 to 4 and Q is chlorine or bromine or mixtures thereof, in finely divided form, into the cavity in a whirling vortex of an organic alcohol having 4 or 5 carbon atoms and a branched methyl group, and separaring the resulting aluminum halide microspheres from said alcohol.
Claim 5
Dependent Claim
24 words
Basic aluminum hAlides as set forth in claim 1 wherein the microspheres of said halide have an average diameter of less than 44 microns.
Claim 6
Dependent Claim
25 words
Basic aluminum halides as set forth in claim 1 wherein the microspheres of said basic aluminum halide have a diameter of less than 74 microns.
Claim 7
Dependent Claim
13 words
Basic aluminum halides as set forth in claim 1 wherein Q is chlorine.
Claim 8
Dependent Claim
13 words
Basic aluminum halides as set forth in claim 1 wherein Q is bromine.
Claim 9
Dependent Claim
23 words
Basic aluminum halides as set forth in claim 1 wherein the formula for said halides is (Al(OH)2Q) where Q is chlorine or bromine.
Claim 10
Dependent Claim
23 words
Basic aluminum halides as set forth in claim 1 wherein the formula for said halides is (Al4(OH)9Q3) where Q is chlorine or bromine.
Claim 11
Dependent Claim
23 words
Basic aluminum halides as set forth in claim 1 wherein the formula for said halides is (Al2(OH)5Q) where Q is chlorine or bromine.
Claim 12
Dependent Claim
17 words
Basic aluminum halides as set forth in claim 1 wherein the formula for said halides is (Al2(OH)5Cl).
Claim 13
Dependent Claim
93 words
In a process for preparing in microspherical form basic aluminum halides having the formula Aln(OH)xQy.XH2O wherein x+y 3n, x is 2 or more, X is from 2 to 4, and Q is chlorine or bromine or mixtures thereof, said halides being solid and in microspherical form having a diameter of from 2 to 500 microns, the step of discharging an aqueous solution of said halides in finely divided form into the cavity of a whirling vortex of an organic alcohol which has from 4 to 5 carbon atoms and a branched methyl group.
Claim 14
Dependent Claim
93 words
In a process for preparing in microspherical form basic aluminum halides having the formula Aln(OH)xQy.XH2O wherein x+y 3n, x is 2 or more, X is from 2 to 4, and Q is chlorine or bromine or mixtures thereof, said halides being solid and in microspherical form having a diameter of from 2 to 500 microns, the step of discharging an aqueous solution of said halides in finely divided form into the cavity of a whirling vortex of an organic alcohol which has from 4 to 5 carbon atoms and a branched methyl group.
Claim 15
Dependent Claim
13 words
A process as set forth in claim 10 wherein said alcohol is 2-methyl-1-propanol.
Claim 16
Dependent Claim
22 words
A process as set forth in claim 10 which includes the step of separating said halides in microspherical form from said alcohol.
Claim 17
Dependent Claim
19 words
A process as set forth in claim 10 wherein said halide is discharged from a nozzle into said cavity.
Claim 18
Dependent Claim
21 words
A process as set forth in claim 10 wherein said halide is discharged from a small diameter tube into said cavity.
Claim 19
Dependent Claim
13 words
A process as set forth in claim 10 wherein said halide is chloride.
Claim 20
Dependent Claim
15 words
A process as set forth in claim 10 wherein said halide is basic aluminum bromide.
Claim 21
Dependent Claim
22 words
A process as set forth in claim 10 wherein said halide is basic aluminum chloride and wherein said organic alcohol is 2-methyl-1-propanol.
Claim 22
Dependent Claim
26 words
A process as set forth in claim 10 wherein said aqueous halide solution contains about 10 to 50 percent by weight of said basic aluminum halide.
Claim 23
Dependent Claim
17 words
A process as set forth in claim 10 wherein said alcohol is contained in a cylindrical container.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |