The invention relates to novel bis-para-phenylenediamine derivatives containing a pyrrolidyl group substituted with a cationic radical, to dye compositions containing them and to the process of dyeing keratin fibres using these compositions.
The present invention makes it possible to obtain a chromatic, powerful, sparingly selective and colourfast coloration of keratin fibres.
                            本发明涉及一种新型双
对苯二胺衍
生物,其包含一个被带正电基团取代的
吡咯烷基团,以及包含它们的
染料组合物和使用这些组合物染色角蛋白纤维的方法。本发明使得能够获得色彩饱和、强烈、选择性小且色牢度高的角蛋白纤维染色。