| abstract |
Reactive dyes of formula (1): wherein R1, is optionally substituted C1,-C4 alkyl, R2 is halogen, C1-C4 alkyl, C1-C4 alkoxy or sulfo,Z1 is a radical of formula -SO2-Y (2a), -CO-NH-(CH2 )K-SO2-Y (2b),-NH-CO-CH(Hal)-CH2-Hal (2c) -NH-CO-C(Hal)=CH2 or (2d) wherein Hal is chlorine or bromine, Y is vinyl or a radical -CH2CH2-U and U is a group removable under alkaline conditions, k is the number 2, 3, 4, 5 or 6, n is the number 0, 1 or 2 and m is the number 0 or 1, are suitable for dyeing or printing cellulose-containing fibre materials, preferably natural or synthetic polyamide fibre materials, and produce, with a high colour yield, dyeings and prints having good fastness properties. |