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Abstract

Reactive dyes of formula (1): wherein R.sub.1, is optionally substituted C.sub.1-C.sub.4 alkyl, R.sub.2 is halogen, C.sub.1-C.sub.4 alkyl, C.sub.1-C.sub.4 alkoxy or sulfo, Z.sub.1 is a radical of formula --SO.sub.2--Y (2a), --CO--NH--(CH.sub.2).sub.K--SO.sub.2--Y (2b), --NH--CO--CH(Hal)--CH.sub.2--Hal (2c) --NH--CO--C(Hal).dbd.CH.sub.2 or (2d) wherein Hal is chlorine or bromine, Y is vinyl or a radical --CH.sub.2CH.sub.2--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 ##STR00001##

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