Reactive dyes of the formula ##STR1## in which D is the radical of a monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide dye, B.sub.1 and B.sub.2 are independently of each other hydrogen or alkyl which has 1 to 4 carbon atoms and which can be substituted by halogen, hydroxyl, cyano, C.sub.1-4 alkoxy, C.sub.1-4 alkoxycarbonyl, carboxyl, sulfamoyl, sulfo or sulfato, X is fluorine, chlorine, bromine, sulfo, alkylsulfonyl having 1 to 4 C atoms or phenylsulfonyl, B is a --CH.sub.2 --.sub.n or --O--CH.sub.2 --.sub.n radical, n is 1 to 6, R is a radical of the formula ##STR2## Z is .beta.-sulfatoethyl, .beta.-thiosulfatoethyl, .beta.-phosphatoethyl, .beta.-acyloxyethyl, .beta.-haloethyl or vinyl, alk is an alkylene radical having 1 to 6 C atoms or a branched isomer thereof, Y is hydrogen, chlorine, bromine, fluorine, hydroxyl, sulfato, acyloxy having 1 to 4 C atoms, cyano, carboxyl, alkoxycarbonyl having 1 to 5 C atoms, carbamoyl or a --SO.sub.2 --Z radical, in which Z is as defined above, V is hydrogen or an alkyl radical having 1 to 4 C atoms and which can be substituted by carboxyl or sulfo groups or by derivatives thereof, or by alkoxy groups having 1 to 2 C atoms, halogen or hydroxyl, or a ##STR3## radical in which Z, alk and Y are as defined above, R.sub.1 is hydrogen or C.sub.1-6 alkyl, the alk's are independently of each other polymethylene radicals having 2 to 6 C atoms or branched isomers thereof, m is 1 to 6, p is 1 to 6 and q is 1 to 6, and the benzene or naphthalene radical A can contain further substituentsare suitable in particular for dyeing or printing cellulose-containing fibre materials by the cold pad-batch method and, while giving a high dyeing yield, produce dyeings and prints having good fastness properties.