Fibre-reactive dyes and dye mixtures and their use for dyeing or printing cotton

A dye mixture, which contains dyes of the formulae ##STR90## in which A.sub.1, A.sub.2 and A.sub.3 are identical, and are each a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dye radical;

• R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5, independently of one another, are hydrogen or C.sub.1 -C.sub.4 alkyl, which is unsubstituted or substituted by halogen, hydroxyl, cyano, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato;
• B is C.sub.1 -C.sub.10 alkylene, phenylene, naphthylene, diphenylene, stilbenylene or benzylene, each of which bivalent radicals being unsubstituted or substituted by halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, carboxyl or sulfo;
• the group --NZ.sub.1 Z.sub.2 is (I) N-C.sub.1 -C.sub.8 alkylamino or N,N-di-C.sub.1 -C.sub.8 alkylamino wherein the alkyl moiety or moieties are, independently of each other, unsubstituted or substituted by C.sub.2 -C.sub.4 alkanoylamino, C.sub.1 -C.sub.4 alkoxy, hydroxy-C.sub.2 -C.sub.4 alkoxy, halogen, cyano, carboxyl, hydroxyl, sulfo, sulfato, phenyl or naphthyl, (II) N-C.sub.5 -C.sub.7 cycloalkylamino or N-C.sub.1 -C.sub.8 alkyl-N-C.sub.5 -C.sub.7 cycloalkylamino, wherein the cycloalkyl moiety in each case is unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl and the alkyl moiety is unsubstituted or substituted as mentioned above, (III) N-phenylamino, N-C.sub.1 -C.sub.8 alkyl-N-phenylamino, N-naphthylamino or N-C.sub.1 -C.sub.8 alkyl-N-naphthylamino wherein the alkyl moiety is in each case unsubstituted or substituted as mentioned above and the phenyl or naphthyl moiety is in each case unsubstituted or substituted by halogen, nitro, cyano, trifluoromethyl, sulfamoyl, carbamoyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, acetylamino, ureido, hydroxyl, carboxyl, sulfomethyl or sulfo, (IV) furanylamino, thiophenylamino, pyrazolylamino, pyridinylamino, pyrimidinylamino, quinolinylamino, benzimidazolylamino, benzothiazolylamino or benzoxazolylamino or (V) morpholinyl, piperidinyl or piperazinyl;
• and
• X.sub.1, X.sub.2 and X.sub.3, independently of one another, are fluorine, chlorine, bromine, sulfo or carboxypyridinium.