769168-35-6Relevant academic research and scientific papers
FIBRE-REACTIVE AZO DYES, THEIR PREPARATION AND THEIR USE
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Page 15, (2008/06/13)
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.
