REACTIVE DYES, THEIR PREPARATION AND USE

摘要

The present invention relates to reactive dyes of the formula (1) , in which A is a benzene or naphthalene radical which can contain as further substituents one or more alkyl groups having 1 to 4 carbon atoms, alkoxy groups having 1 to 4 carbon atoms, acylamino groups having 1 to 6 carbon atoms, benzoylamino, amino, ureido, hydroxy, carboxy, halogen or sulfo groups, the benzene radical B can contain as further substituents those named under A, R1 and R2 independently of one another are each a hydrogen atom or an alkyl radical having 1 to 4 carbon atoms which can be substituted by chloro, hydroxy, cyano, carboxy or sulfo, and R3 is a hydrogen atom, an alkyl radical having 1 to 4 carbon atoms which can be substituted by the substituents named under R1 and R2, alkoxyalkyl having 1 to 4 carbon atoms in the alkoxy radical and 1 to 4 carbon atoms in the alkyl radical, benzyl which can be substituted by sulfo or methyl, cyclohexyl, naphthyl which can be substituted by sulfo, an unsubstituted phenyl radical or a substituted phenyl radical of the formula in which R4 is C1-4-alkyl, C1-4alkoxy- C1-4-alkoxyalkoxy, acetylamino, ureido, carboxyl, halogen, sulfo, sulfomethyl, trifluormethyl, sulfamoyl, carbamoyl, nitro or hydroxyl and R5 is a hydrogen atom or one of the substituents named under R4, and if several substituents R4 are present these can be identical or different, or in which R2 and R3 together with the N atom form a six-membered heterocyclic radical, and the radical or radicals of the formula (2) is or are bonded to A and/or to the naphthalene nucleus, which carries one of the two complex-forming oxygen atoms.