Reactive dyes of formula (1) wherein R1, R2, R3 and R4 are each independently of the others hydrogen or unsubstituted or substituted C1-C4alkyl, (R5)s denotes s identical or different substituents selected from the group halogen, sulfo, carboxy, C1-C4alkyI and C1-C4alkoxy, B is an aliphatic bridging member, X1 and X2 are halogen, r is an integer from 0 to 2, s is an integer from 0 to 3, and n and m are each independently of the other a number 1 or 2, and Z is a fibre-reactive group of formula -SO2-Y (2a), -NH-CO-(CH2)K-SO2-Y (2b), -CONH-(CH2)I-SO2-Y (2c), -NH-CO-CH(Hal)-CH2-Hal (2d) or -NH-CO-C(Hal)=CH2 (2e) wherein Hal is chlorine or bromine, k and I are each independently of the other a number 2, 3 or 4, and Y is vinyl or a radical -CH2-CH2-U and U is a group removable under alkaline conditions are suitable for dyeing cellulosic or amide-group-containing fibre materials.
式(1)中的响应性
染料,其中R1、R2、R3和R4分别独立于其他氢或未取代或取代的C1-C4烷基,(R5)s表示s个相同或不同的取代基,选自卤素、磺酰基、羧基、C1-C4烷基和C1-C4烷氧基组,B是脂肪族桥联成员,X1和X2是卤素,r是从0到2的整数,s是从0到3的整数,n和m分别独立于另一个是1或2的数字,Z是式为-SO2-Y(2a)、-NH-CO-(
CH2)K-SO2-Y(2b)、-CONH-( )I-SO2-Y(2c)、-NH-CO-CH(Hal)- -Hal(2d)或-NH-CO-C(Hal)= (2e)的纤维反应性基团,其中Hal是
氯或
溴,k和I分别独立于另一个是2、3或4的数字,Y是
乙烯基或基团- - -U,U是在碱性条件下可去除的基团,适用于染色
纤维素或含酰胺基团的纤维材料。