申请人:L'Oreal
公开号:US04740622A1
公开(公告)日:1988-04-26
New 3-amino-4-nitrophenols, the process for preparation thereof and their use in dyeing keratinous fibres, and new intermediate 4,5-dinitrophenols. The present invention relates to a 3-amino-4-nitrophenol of formula: ##STR1## where Z denotes --CH.sub.2 --W, W denoting hydrogen, 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 hydrogen, C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 hydroxyalkyl, C.sub.2 -C.sub.6 polyhydroxyalkyl or (C.sub.1 -C.sub.3)alkoxy(C.sub.1 -C.sub.6)alkyl, the process for preparation thereof and the intermediate compound of formula: ##STR2## in which Z' denotes CH.sub.2 --W, W denoting 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)hydroxyalcoxy(C.sub.1 -C.sub.6)alkyl. The dyes (I) are useful in direct dyeing of keratinous fibres, in particular human hair.
新的3-氨基-4-硝基苯酚,其制备方法及其在染色角蛋白质纤维中的应用,以及新的中间体4,5-二硝基苯酚。本发明涉及一种式为:##STR1##其中Z表示--CH.sub.2 --W,W表示氢,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表示氢,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)烷基的3-氨基-4-硝基苯酚的制备方法以及式为:##STR2##其中Z'表示CH.sub.2 --W,W表示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)烷基的中间化合物。染料(I)在直接染色角蛋白质纤维,特别是人发中有用。