Method for the synthesis of 2-hydroxyalkyl-para-phenylenediamines, new 2-hydroxyalkyl-para-phenylenediamines, their use for oxidation dyeing, dyeing compositions and methods of dyeing
申请人:L'Oreal S.A.
公开号:US06306179B1
公开(公告)日:2001-10-23
The present invention relates to a new method for the synthesis of 2-hydroxyalkyl-para-phenylenediamines which are substituted or unsubstituted at the 5-position of the benzene ring, new 2-hydroxyalkyl-para-phenylenediamines which are substituted or unsubstituted at the 5-position of the benzene ring, their use for the oxidation dyeing of keratinous fibers, the dyeing compositions containing them, as well as the methods of dyeing using them.
本发明涉及一种合成2-羟基烷基对苯二胺的新方法,所述2-羟基烷基对苯二胺在苯环的5-位被取代或未取代,以及在苯环的5-位被取代或未取代的新2-羟基烷基对苯二胺,它们用于氧化染色角蛋白纤维,含有它们的染料组合物,以及使用它们的染色方法。