A - Human Necessities – 61 – K
Patent
A - Human Necessities
61
K
A61K 8/49 (2006.01) A45D 19/00 (2006.01) A61K 8/41 (2006.01) A61Q 5/10 (2006.01)
Patent
CA 2249467
A composition for dyeing keratin fibres, particularly human hair, consisting of a medium suitable for use in dyeing and containing, as the coupler, at least one compound of formula (I), or an acid addition salt thereof, wherein R¿1? is particularly hydrogen, alkyl, aryl, a heterocyclic ring, halogen, etc., R¿2? is particularly hydrogen, halogen, alkoxy, aryloxy, acyloxy, arylthio, alkylthio, etc., R¿3? has the same meaning as R¿1?, and each of Za and Zb, which are different, is C=O or CR¿4?, where R¿4? has the same meaning as R¿1?, as well as at least one oxidation base, is disclosed.
La présente invention concerne une composition pour la teinture des fibres kératiniques, en particulier des cheveux humains, contenant dans un milieu approprié pour la teinture: à titre de coupleur au moins un composé de formule (I) ou l'un des sels d'addition avec un acide, avec: R1 désigne notamment hydrogène, alkyle, aryle, un hétérocycle, halogène,...; R2 désigne notamment hydrogène, halogène, alcoxy, aryloxy, acyloxy, arylthio, alkylthio,...; R3 a les mêmes significations que celles de R1; Za et Zb, différents, désignent C=O ou CR4, avec R4 ayant les mêmes significations que R1; et au moins une base d'oxydation.
Malle Gerard
Vidal Laurent
L'oreal
Robic
LandOfFree
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