Patent ID: 7951209
Filing Date: 2011-05-31
Classification: A61K,A61Q

Abstract:
1. A composition for the oxidation dyeing of human keratin fibers, and in particular of human keratin fibers such as the hair, comprising: a medium that is suitable for dyeing at least one oxidation base comprising 4,5-diamino 1-hydroxyethyl pyrazole, at least one carbonyl compound selected from the group consisting of polyimides and compounds of formulae (I), (II) and (III) wherein R1, R1′, R2 and R2′ denote, independently of each other, a hydrogen atom; a saturated or unsaturated aliphatic hydrocarbon-based chain containing from 1 to 30 carbon atoms, which may be interrupted with one or more hetero atoms or with one or more carbonyl groups, which is unsubstituted or substituted with one or more groups chosen from hydroxyl, C x denotes 0, and R wherein B denotes a saturated or unsaturated aliphatic hydrocarbon-based chain containing from 1 to 30 carbon atoms, which may be interrupted with one or more hetero atoms or with one or more carbonyl groups, which is unsubstituted or substituted with one or more groups chosen from hydroxyl, C R wherein the at least one carbonyl compound is selected from the group consisting of aldoses and ketoses of formula (I), maleic acid, and a polyimide obtained from pyromellitic dianhydride.