Cationic 4-hydroxyindoles, their use for the oxidation dyeing of keratinous fibers, dyeing compositions, and methods of dyeing
US6306181A · kind A · utility
10Cited by
10References
56Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 21, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Sep 21, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D401/14
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to novel 4-hydroxyindole derivatives comprising at least one cationic group Z, Z being selected from quaternized aliphatic chains, aliphatic chains containing at least one quaternized saturated ring, and aliphatic chains containing at least one quaternized unsaturated ring, to their use as a coupler for the oxidation dyeing of keratinous fibers, to the dyeing compositions comprising them, and to the methods of oxidation dyeing which employ them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.