Substituted N-aryl pyrroles in oxidative hair dye compositions
US5019130A · kind A · utility
22Cited by
3References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 3, 1989 |
| Grant date | May 28, 1991 |
| Priority date | — |
| Expiry date | Nov 3, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D207/325
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The coloring of human hair and other keratinaceous substrates can be carried out efficiently using compositions containing certain N-aryl pyrroles as dye couplers or developers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.