Processes for dyeing keratinous fibers with compositions which contain N-substituted 4-hydroxyindoline derivatives as couplers and oxidation bases
US5755829A · kind A · utility
14Cited by
2References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 5, 1996 |
| Grant date | May 26, 1998 |
| Priority date | — |
| Expiry date | Dec 5, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D209/08
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The subject of the invention is a composition for the oxidation dyeing of keratinous fibers containing at least one N-substituted 4-hydroxyindoline derivative as coupler and at least one oxidation base. The invention also relates to new N-substituted 4-hydroxyindoline derivatives, to their process of synthesis, to their use as couplers for the oxidation 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.