Synthesis of quaternary melanin compounds and their use as hair dyes or for skin treatment
US5686084A · kind A · utility
8Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1995 |
| Grant date | Nov 11, 1997 |
| Priority date | — |
| Expiry date | Dec 6, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/065
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The specification describes water soluble, cationic products useful as hair colorants or for skin care obtained by oxidative polymerization of a 5,6-dihydroxyindole-2-quaternary amides or esters, as well as compositions containing the same, methods of using the same in compositions to color hair or treat skin and intermediates for producing the products.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.