| 摘要 |
<p>Composition for dyeing keratinous fibres containing, in a suitable medium for dyeing, at least one compound corresponding to one of the two following formulae: <IMAGE> in which: R denotes a group of formula: <IMAGE> in which: R1 denotes hydrogen, alkyl or a covalent bond; R2 denotes hydrogen, alkyl, phenyl or a covalent bond; R3 denotes alkyl or a covalent bond; one and only one of the radicals R1 to R3 denotes a covalent bond; R4 to R7, which are identical or different, denote hydrogen, halogen, alkyl, alkoxycarbonyl, acyl, acyloxy, cyano, optionally monosubstituted amino, NO2, OH, alkoxy or benzyloxy; at most two can denote OH, alkoxy or benzyloxy; at most one alone can denote halogen, NO2, alkoxycarbonyl, acyl, cyano, optionally substituted amino or acyloxy; R5 and R6 can denote methylenedioxy. c</p> |
