Enhanced efficacy aluminum-zirconium antiperspirants and methods for making
US6451296B1 · kind B1 · utility
13Cited by
11References
26Claims
0Family size
Inventors
Key dates
| Filing date | Feb 1, 2000 |
| Grant date | Sep 17, 2002 |
| Priority date | — |
| Expiry date | Feb 1, 2020 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/58
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Stable aluminum-zirconium antiperspirant compositions in polyhydric alcohol solution with enhanced efficacy were made by direct reaction in aqueous solution of a soluble aluminum salt, a zirconium compound, a polyhydric alcohol, aluminum metal and optionally an amino acid buffer, and maintaining the solution at 100-140° C. to form a 20-45% by weight concentration of aluminum-zirconium complexes on an anhydrous basis. A solid product can be obtained by spray drying the product solution.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.