New nitroaminophenols, the process for preparation thereof and their use in dyeing keratinous fibres, and new intermediate nitroaminobenzenes and their use in dyeing keratinous fibres. The invention relates to a nitroaminophenol of formula: ##STR1## in which Z denotes -CH.sub.2 W, W denoting H, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.2 -C.sub.6 polyhydroxyalkyl, (C.sub.1 -C.sub.3), alkoxy(C.sub.1 -C.sub.6)alkyl or (C.sub.1 -C.sub.3)hydroxyalkoxy(C.sub.1 -C.sub.6)-alkyl and R denotes H, (C.sub.1 -C.sub.6)alkyl, C.sub.1 -C.sub.6 hy-droxyalkyl, C.sub.2 -C.sub.6 polyhydroxyalkyl or (C.sub.1 -C.sub.3)-alkoxy(C.sub.1 -C.sub.6)alkyl, and the process for preparation thereof, and the intermediate compound of formula: ##STR2## in which R' denotes C.sub.1 -C.sub.6 hydroxyalkyl, C.sup.2 -C.sub.6 polyhydroxyalkyl or (C.sub.1 -C.sub.3)alkoxy(C.sub.1 -C.sub.6)alkyl and the process for preparation thereof. The dyes of formulae (I) and (II') can be used in direct dyeing of keratinous fibres, in particular, human hair.
新的硝基
氨基
酚,其制备过程以及它们在染色角蛋白纤维中的应用,以及新的中间体硝基
氨基苯和它们在染色角蛋白纤维中的应用。该发明涉及一种
化学式为:##STR1##其中Z表示-CH.sub.2 W,W表示H,C.sub.1-C.sub.6烷基,C.sub.1-C.sub.6羟基烷基,C.sub.2-C.sub.6多羟基烷基,(C.sub.1-C.sub.3)烷氧基(C.sub.1-C.sub.6)烷基或(C.sub.1-C.sub.3)羟基氧基(C.sub.1-C.sub.6)-烷基,R表示H,(C.sub.1-C.sub.6)烷基,C.sub.1-C.sub.6羟基烷基,C.sub.2-C.sub.6多羟基烷基或(C.sub.1-C.sub.3)烷氧基(C.sub.1-C.sub.6)烷基,以及其制备过程和
化学式为:##STR2##其中R'表示C.sub.1-C.sub.6羟基烷基,C.sup.2-C.sub.6多羟基烷基或(C.sub.1-C.sub.3)烷氧基(C.sub.1-C.sub.6)烷基,以及其制备过程。
化学式(I)和(II')的
染料可用于直接染色角蛋白纤维,特别是人发。