| 摘要 |
Reactive dyes of formula (1) wherein R<SUB>1</SUB>, R<SUB>2</SUB>, R<SUB>3 </SUB>and R<SUB>4 </SUB>are each independently of the others hydrogen or unsubstituted or substituted C<SUB>1</SUB>-C<SUB>4</SUB>alkyl, (R<SUB>5</SUB>)<SUB>s </SUB>denotes s identical or different substituents selected from the group halogen, sulfo, carboxy, C<SUB>1</SUB>-C<SUB>4</SUB>alkyl and C<SUB>1</SUB>-C<SUB>4</SUB>alkoxy, B is an aliphatic bridging member, X<SUB>1 </SUB>and X<SUB>2 </SUB>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 -SO<SUB>2</SUB>-Y (2a), -NH-CO-(CH<SUB>2</SUB>)<SUB>K</SUB>-SO<SUB>2</SUB>-Y (2b), -CONH-(CH<SUB>2</SUB>)I-SO<SUB>2</SUB>-Y (2c), -NH-CO-CH(Hal)-CH<SUB>2</SUB>-Hal (2d) or -NH-CO-C(Hal)=CH<SUB>2 </SUB>(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 -CH<SUB>2</SUB>-CH<SUB>2</SUB>-U and U is a group removable under alkaline conditions are suitable for dyeing cellulosic or amide-group-containing fibre materials.
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