The present invention refers to dyestuffs of the formula I
wherein
each of R1, R2, R3, R4 and R5, independently, is H or an optionally substituted alkyl group;
each of X1 and X2, independently, is a labile atom or group;
each of x and y, independently, is 0 or 1 and at least one of x and y is 1;
each of a and b is 2 to 5 and when each of x and y is 1, a > b; and
z is 0, 1, 2, 3 or 4; and
wherein the variables D1 and D2 are defined as given in claim 1 or in claim 2, processes for their preparation and their use for dyeing and printing hydroxy- and/or carboxamido-containing fiber materials.
本发明涉及式 I 的
染料
其中
R1、R2、R3、R4 和 R5 各自独立地为 H 或任选取代的烷基;
X1和X2各自独立地为易变原子或基团
x 和 y 各自独立地为 0 或 1,且 x 和 y 中至少有一个为 1;
a 和 b 各为 2 至 5,当 x 和 y 各为 1 时,a > b;以及
z 为 0、1、2、3 或 4;以及
其中变量 D1 和 D2 的定义如权利要求 1 或权利要求 2 所述,其制备工艺及其在含羟基和/或羧基
氨基纤维材料染色和印花中的用途。