申请人:Bristol-Myers Squibb Company
公开号:EP0487205A2
公开(公告)日:1992-05-27
The novel hair dye compositions containing a compound of the formula:
wherein R₁, R₂, R₃ and R₄, which may be identical or different are hydrogen, alkyl, hydroxyalkyl, polyhydroxyalkyl, alkoxyalkyl, hydroxyalkoxyalkyl aminoalkyl and dialkylaminoalkyl, each alkyl group and each alkoxy group having from about 1 to about 6 carbons and R₅ is hydrogen or alkyl containing from about 1 to about 6 carbon atoms are disclosed. More specifically, the present invention concerns the inclusion of such compounds of formula I in hair dye compositions as direct dyes, and especially the novel compound 4-(2-hydroxyethylamino)- 3-nitrobenzamide. The compounds, some of which are novel, provide a yellow dye base for the hair dyeing compositions.
新型染发剂组合物含有一种式化合物:
其中R₁、R₂、R₃和R₄可以相同或不同,它们是氢、烷基、羟基烷基、多羟基烷基、烷氧基烷基、羟基烷氧基烷基氨基烷基和二烷基氨基烷基,每个烷基和每个烷氧基具有约1至约6个碳原子,R₅是氢或含有约1至约6个碳原子的烷基。更具体地说,本发明涉及将式 I 的此类化合物作为直接染料加入染发剂组合物中,特别是新型化合物 4-(2-羟乙氨基)- 3-硝基苯甲酰胺。这些化合物(其中一些是新型化合物)为染发组合物提供了黄色染料基。