Compositions for dyeing keratinous fibers and keratinous fiber dyeing processes with derivatives of 4-hydroxyindole and oxidation bases
US5704948A · kind A · utility
10Cited by
3References
21Claims
0Family size
Assignee
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Key dates
| Filing date | Jul 12, 1996 |
| Grant date | Jan 6, 1998 |
| Priority date | — |
| Expiry date | Jul 12, 2016 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61Q5/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition for the oxidation dyeing of keratinous fibers containing at least one coupler selected from N-substituted 4-hydroxyindole compounds and acid addition salt thereofs and at least one oxidation base, N-substituted 4-hydroxyindole compounds, a process for synthesizing these substituted compounds, their use as couplers for the oxidation dyeing of keratinous fibers in combination with at least one oxidation base, as well as dyeing processes employing them.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.