Antimicrobial cosmetic pigment, its production process, and a cosmetic containing it
US6030627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 16, 1997 |
| Grant date | Feb 29, 2000 |
| Priority date | — |
| Expiry date | May 16, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2006/80
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to an antimicrobial pigment, its production process, and a cosmetic composition containing the pigment. More particularly, it relates to an antimicrobial cosmetic pigment produced by forming an amorphous glassy inorganic coating layer of metal oxides over the surface of inorganic cosmetic pigment and intercalating antimicrobial metals inside the lattice structure of the coating layer, it's production process, and a cosmetic composition containing it. Silica, either alone or as the principal ingredient in combination with one or more oxides selected from the group consisting of zinc oxide, magnesium oxide, calcium oxide, aluminum oxide, lithium oxide, sodium oxide, potassium oxide, and ferric oxide is utilized as the metal oxide and the composition utilizes silver, copper and zinc as the antimicrobial metals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.