The present invention relates to water insoluble disperse-reactive dyes expressed by the formula (3) and (4) and to their preparation, (3) (4) wherein each of Ar
1
and Ar
2
represents aryl or benzothiazole group, and each of R, R
1
, R
2
, and R
3
independently represents hydrogen, alkyl, alkoxy, cyanoalkyl or aminoacetyl group.
1
本发明涉及由式 (3) 和 (4) 表示的
水不溶性分散反应
染料及其制备方法,(3) (4) 其中 Ar
1
和 Ar
2
代表芳基或
苯并噻唑基团,R、R
1
, R
2
和 R
3
分别代表氢、烷基、烷氧基、
氰基烷基或
氨基乙酰基。
1