Compositions for dyeing keratin fibres containing 2-iminoindoline derivatives and dyeing process
US5876465A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 1997 |
| Grant date | Mar 2, 1999 |
| Priority date | — |
| Expiry date | Aug 22, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/88
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A composition for dyeing keratin fibres, and in particular human keratin fibres such as the hair, characterized in that it comprises, in a medium which is suitable for dyeing: PA1 at least one coupler selected from 2-iminoindoline derivatives of formula (I) and acid addition salts thereof: ##STR1## in which: R.sub.1 represents hydrogen, alkyl, hydroxyalkyl, alkoxycarbonyl or acyl; PA1 R.sub.2 represents hydrogen, alkyl, phenyl or arylsulphonyl; PA1 R.sub.3 represents hydrogen or alkyl which may be substituted with one or more hydroxyl, alkoxy, amino, alkylamino, dialkylamino, cyano or aryl groups; PA1 R.sub.4 and R.sub.5, which may be identical or different, denote hydrogen, hydroxyl, alkyl, alkoxy, amino, alkylamino, dialkylamino, aralkyl, halogen or a nitro group; and PA1 at least one oxidation base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.