Fragrance friendly and cost effective antiperspirant actives and method of making the same
US7153495B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2004 |
| Grant date | Dec 26, 2006 |
| Priority date | — |
| Expiry date | Mar 16, 2025 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/26
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A cost effective process is provided for making stable, efficacious, amino acid and polyhydric alcohol free concentrated aqueous aluminum zirconium salt solutions. Absence of amino acid, low iron content and low trace metal impurity levels improve compatibility with fragrances and minimizes the probability of the product color change and possibly fabric staining significantly. The novel aluminum zirconium actives also minimize iron contribution to underarm area that supports growth of microflora which is responsible for axillary malodour by the biotransformation of nonodorous precursors present in perspiration. The astringent complexes of the present invention may be obtained in solution or dry powder form. As a result, the complexes are satisfactory for use in any of wide variety of conventional antiperspirant forms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.