US3979510A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-zirconium anti-perspirant systems with complex aluminum buffers
Assignee: Reheis Co Inc
•
Filing: 1974-06-07
•
Granted: 1976-09-07
•
Expires: 1994-06-07
Abstract
Abstract Anti-perspirant complexes are provided which comprise a combination of a basic aluminum compound, a zirconium compound and a complex aluminum buffering compound containing in addition to aluminum two or more of the following: magnesium, calcium, sodium, carbonate, sulfate, hydroxyl and water. The various components are present in the complex in amounts such that the Al/Zr mole ratio is about 10:1 to 1:10 and the pH of an aqueous solution containing 5 to 15 weight percent of the complex (based on the oxides of aluminum and zirconium) is at least about 3. The basic aluminum compound may be any of the usual basic aluminum anti-perspirant salts, particularly the basic aluminum halides, and the zirconium compound may be a zirconium oxy salt and/or zirconium hydroxy salt. The complex aluminum buffer preferably contains among the additional groups or elements magnesium and/or carbonate. Examples of suitable complex aluminum buffers used include well-known antacid complexes such as hydrated magnesium aluminate, hydrated magnesium aluminum sulfate (HMAS), dihydroxy aluminum sodium carbonate (DASC), tetrahydroxy dialuminum magnesium carbonate (TDMC), and co-precipitates or co-dried mixtures of aluminum hydroxide with magnesium carbonate and/or calcium carbonate. The complexes may be used in conventional anti-perspirant forms, including aqueous solutions, aerosol sprays (including powder-in-oil aerosol sprays), as well as creams, lotions and cream sticks.
Inventors
- 👤 Andrew M. Rubino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:07
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/19; A61K8/28; A61K8/30; A61K8/33; A61K8/34; A61K8/345; A61K8/46; A61K8/466; A61Q; A61Q15/00; A61K2800/00; A61K2800/40; A61K2800/58
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
243 words
An astringent, water soluble complex formed by reacting the following components (a), (b) and (c) in aqueous medium: a. a basic aluminum compound selected from the group having the general empirical formula: Al.sub.2 (OH).sub.6.sub.-.sub.nx A.sub.x wherein x may vary from greater than 0 to less than 6, 6-nx is greater than or equal to 0, n is the valence of A, and A is selected from the group consisting of halide, nitrate, sulfamate, sulfate and mixture thereof; b. a zirconium compound selected from trioxodizirconium salts and the group having the general empirical formula: ZrO(OH).sub.2.sub.- nz B.sub.z wherein z may vary from 0.9 to 2, n is the valence of B, 2-nz is greater than or equal to 0, and B is selected from the group consisting of halide, nitrate, sulfamate, sulfate and mixture thereof; and c. a complex aluminum buffer compound selected from the group consisting of hydrated magnesium aluminate, hydrated magnesium aluminum sulfate, and the co-dried or co-precipitated reaction product of aluminum hydroxide with a carbonate selected from the group consisting of magnesium carbonate, calcium carbonate, sodium carbonate and mixtures thereof; said basic aluminum and zirconium compounds being present in such amounts as to yield an Al/Zr mole ratio of about 10:1 to 1:10, and said buffer compound being present in such an amount that the pH of a 5 to 15 weight percent (based on the oxides of Al and Zr) aqueous solution of the complex is at least about 3.
Claim 2
Dependent Claim
243 words
An astringent, water soluble complex formed by reacting the following components (a), (b) and (c) in aqueous medium: a. a basic aluminum compound selected from the group having the general empirical formula: Al.sub.2 (OH).sub.6.sub.-.sub.nx A.sub.x wherein x may vary from greater than 0 to less than 6, 6-nx is greater than or equal to 0, n is the valence of A, and A is selected from the group consisting of halide, nitrate, sulfamate, sulfate and mixture thereof; b. a zirconium compound selected from trioxodizirconium salts and the group having the general empirical formula: ZrO(OH).sub.2.sub.- nz B.sub.z wherein z may vary from 0.9 to 2, n is the valence of B, 2-nz is greater than or equal to 0, and B is selected from the group consisting of halide, nitrate, sulfamate, sulfate and mixture thereof; and c. a complex aluminum buffer compound selected from the group consisting of hydrated magnesium aluminate, hydrated magnesium aluminum sulfate, and the co-dried or co-precipitated reaction product of aluminum hydroxide with a carbonate selected from the group consisting of magnesium carbonate, calcium carbonate, sodium carbonate and mixtures thereof; said basic aluminum and zirconium compounds being present in such amounts as to yield an Al/Zr mole ratio of about 10:1 to 1:10, and said buffer compound being present in such an amount that the pH of a 5 to 15 weight percent (based on the oxides of Al and Zr) aqueous solution of the complex is at least about 3.
Claim 3
Dependent Claim
15 words
A complex according to claim 1 wherein x varies from about 1 to about 2.
Claim 4
Dependent Claim
12 words
A complex according to claim 1 wherein A is chloride or bromide.
Claim 5
Dependent Claim
20 words
A complex according to claim 1 wherein the basic aluminum compound is a phenolsulfonate complex of said basic aluminum compound.
Claim 6
Dependent Claim
15 words
A complex according to claim 1 wherein B is chloride and z is about 1.
Claim 7
Dependent Claim
15 words
A complex according to claim 1 wherein B is bromide and z is about 1.
Claim 8
Dependent Claim
20 words
A complex according to claim 1 wherein said complex aluminum buffer is hydrated magnesium aluminate or hydrated magnesium aluminum sulfate.
Claim 9
Dependent Claim
25 words
A complex according to claim 1 wherein said reaction poduct comprises a co-dried mixture of aluminum hydroxide with magnesium carbonate, calcium carbonate or mixtures thereof.
Claim 10
Dependent Claim
15 words
A complex according to claim 1 wherein said reaction product comprises dihydroxy aluminum sodium carbonate.
Claim 11
Dependent Claim
15 words
A complex according to claim 1 wherein said reaction product comprises tetrahydroxy dialuminum magnesium carbonate.
Claim 12
Dependent Claim
16 words
A complex according to claim 1 wherein the Al/Zr mole ratio is about 1:1 to 6:1.
Claim 13
Dependent Claim
13 words
A complex according to claim 1 wherein said complex also includes aluminum chloride.
Claim 14
Dependent Claim
16 words
A complex according to claim 1 wherein said complex is in the form of a powder.
Claim 15
Dependent Claim
23 words
A complex according to claim 1 wherein said reaction product also includes a hexitol selected from the group consisting of mannitol and sorbitol.
Claim 16
Dependent Claim
14 words
A complex according to claim 1 wherein said reaction product also includes a polyol.
Claim 17
Dependent Claim
45 words
An anti-perspirant composition comprising an aqueous solution of the complex according to claim 1 wherein said complex is present in an amount such that the total amount of aluminum plus zirconium in the solution, calculated as the oxides, is about 5 to 15 weight percent.
Claim 18
Dependent Claim
33 words
A powder-in-oil anti-perspirant composition comprising an aerosol propellant, oil and the complex according to claim 13 wherein said complex is present in an amount of about 1-6 weight percent of the anti-perspirant composition.
References Cited (Backward Citations)
GB770007A
Cited
US2923660A
Cited
US2958626A
Cited
US3009860A
Cited
FR1272502A
Cited
US3088874A
Cited
US3725540A
Cited
US3773683A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-09-07 | 1980-03-08 | 1980-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-09-07 | 1984-03-08 | 1984-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-09-07 | 1988-03-08 | 1988-09-07 | $7700.00 | Window Closed / Lapsed |