A dye of the formula ##STR1## WHEREIN R is alkyl, alkenyl, cycloalkyl, aralkyl or hydrogen, R.sub.1 is alkyl, alkenyl, cycloalkyl, aralkyl or hydrogen, and R and R.sub.1 can be substituted, Z.sub.1 and Z.sub.2 are nonionic substituents or hydrogen, and M is hydrogen or a cation, And A and B can carry nonionic substituents and/or an optionally modified --COOH group. The new dyestuffs dye polyester fibers in brilliant red shades with excellent fastness.
一种
染料的
化学式为##STR1##其中R为烷基,烯基,环烷基,芳基烷基或氢,R.sub.1为烷基,烯基,环烷基,芳基烷基或氢,R和R.sub.1可以被取代,Z.sub.1和Z.sub.2为非离子取代基或氢,M为氢或阳离子,A和B可以携带非离子取代基和/或可选修饰的--COOH基团。这种新的
染料可以在聚酯纤维上染出亮丽的红色,并具有优异的牢度。