Imidazoloazole-containing compositions for dyeing keratin fibers; their use in dyeing as couplers; dyeing process
US6165229A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1999 |
| Grant date | Dec 26, 2000 |
| Priority date | — |
| Expiry date | Feb 8, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K8/4946
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The present invention relates to a composition for dyeing keratin fibers, in particular human hair, containing, in a medium which is suitable for dyeing, at least: PA1 as coupler, at least one compound of formula: ##STR1## in which: R.sub.1 denotes, in particular, hydrogen, alkyl, phenyl, substituted phenyl, cyano; carbonyl; etc. PA0 R.sub.2 denotes, in particular, hydrogen, halogen, alkoxy, aryloxy, acyloxy, acetamido, dialkylamino, etc. PA0 Z.sub.a and Z.sub.b denote a nitrogen atom or a carbon bearing a group R.sub.3 or R.sub.4 or R.sub.5, with the proviso that at least one of the two is a carbon atom; PA0 R.sub.3 and R.sub.4, which are independent, denote cyano; trifluoroalkyl; alkoxycarbonyl; aryloxycarbonyl, hydrogen; alkyl; carboxyl; etc. PA0 R.sub.5 denotes, in particular, hydrogen, aryl, alkoxy, alkylthio, etc. PA1 at least one oxidation base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.