N-substituted 4-hydroxyindoline derivatives
US6002018A · kind A · utility
4Cited by
2References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 28, 1998 |
| Grant date | Dec 14, 1999 |
| Priority date | — |
| Expiry date | Jan 28, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to N-substituted 4-hydroxyindoline derivatives, to their process of synthesis, to their use as couplers for the oxidation of dyeing of keratinous fibers, in combination with at least one oxidation base, and to the dyeing processes in which they are used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.