发明授权
US5178637A Tinctorial composition based on 5,6-dihydroxyindolines and method for dyeing keratinous fibres 失效
基于5,6-二羟基吲哚的组合物和用于染色卡培他滨纤维的方法

Tinctorial composition based on 5,6-dihydroxyindolines and method for
dyeing keratinous fibres
摘要:
The invention relates to the use of a 5,6-dihydroxyindoline corresponding to the formula (I): ##STR1## in which R represents a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, as well as the acid addition salts of these compounds for dyeing keratinous materials, in particular human keratinous materials,and to the tinctorial compositions and methods employed.
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