Method of making aluminum-zirconium antiperspirant of enhanced efficacy
US7060258B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 17, 2004 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Jan 14, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/58
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A novel efficacious and less irritant aluminum-zirconium antiperspirant composition is provided by the addition of a small amount of AlCl3 and/or HCl to the activated aluminum component. After the heating of diluted basic aluminum chlorohydrate solution, cooling to room temperature, mixing with small amount of AlCl3 or HCl and then reacting with zirconium glycine complex, an aluminum-zirconium salt is produced with a maximum amount of depolymerization aluminum and zirconium species. The addition of a small amount of AlCl3 or HCl to the diluted and activated aluminum chlorohydrate solution accelerates the depolymerization of the activated ACH solution, and upon the addition of zirconium glycinate the solution is further depolymerized and results in the formation of less polymerized zirconium species.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.