Developer-coupler hair dyes based on alkoxy-triamino-pyrimidines
US4046503A · kind A · utility
5Cited by
8References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1976 |
| Grant date | Sep 6, 1977 |
| Priority date | — |
| Expiry date | Apr 5, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/4953
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Water-soluble substituted and unsubstituted triamino C.sub.1-4 -alkoxy pyrimidines are effective dyes for hair when oxidized in conjunction with a coupling agent. The oxidation can be performed at alkaline pH at room temperature, with air, and provides long-lasting and light-fast dyeings over a broad color range.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.