| 摘要 |
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 (II), wherein R1 is particularly hydrogen, halogen, aryloxy, alkoxy, acyloxy, arylthio, alkylthio, heteroarylthio, heteroaryloxy, etc., each of R2 and R3, which are the same or different, is particularly hydrogen, halogen, alkyl, aryl, alkylthio, arylthio, benzylthio, etc., each of Za, Zb and Zc, which are the same or different, is a nitrogen atom or a carbon atom with a radical R4, R5, R6 or R7, each of R4, R6 and R7, which are the same or different, is particularly hydrogen, alkyl, aryl, a heterocyclic ring, halogen, etc., and R5 is particularly hydrogen, halogen, acyl, acyloxy, carbamoyl, etc., as well as at least one oxidation base, is disclosed.
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