Reactive dyes, processes for their preparation and their use

A reactive dye of the formula (1)

• in which
• R1, R2, R3 and R4 independently of one another are hydrogen or substituted or unsubstituted C1-C4alkyl,
• (R5)0-2 and (R6)0-2 independently of one another are 0 to 2 identical or different substituents selected from the group consisting of C1-C4alkyl, C1-C4alkoxy, C2-C4alkanoylamino, halogen, carboxyl, sulfo, carbamoyl, N-C1-C4alkylcarbamoyl, N,N-di-C1-C4alkylcarbamoyl, C1-C4alkylsulfonyl, sulfamoyl, N-C1-C4alkylsulfamoyl and N,N-di-C1-C4alkylsulfamoyl,
• A is hydrogen or C1-C4alkyl which is unsubstituted or substituted by hydroxyl, sulfo, carboxyl or sulfato;
• phenyl or naphthyl which are unsubstituted or substituted by C1-C4alkyl, C1-C4alkoxy, C2-C4alkanoylamino, hydroxyl, carboxyl, carbamoyl, sulfo or halogen;
• phenyl-C1-C4alkylene which is unsubstituted or substituted in the phenyl ring by C1-C4alkyl, C1-C4alkoxy, C2-C4alkanoylamino, hydroxyl, carboxyl, sulfo, carbamoyl, ureido or halogen;
• or C5-C7cycloalkyl which is unsubstituted or substituted by C1-C4alkyl,
• B1 is a C2-C12alkylene radical, which can be interrupted by 1, 2 or 3 members selected from the group consisting of —NH—, —N(CH3)— or —O— and is unsubstituted or substituted by hydroxyl, sulfo, sulfato, cyano or carboxyl;
• a C5-C9-cycloalkylene radical, C1-C6alkylenephenylene radical or phenylene radical which are unsubstituted or substituted by C1-C4alkyl, C1-C4alkoxy, C2-C4alkanoylamino, sulfo, halogen or carboxyl;
• or the radical of the formula
• is a radical of the formula
• D1 is a mono- or disazo radical of the formula (4) or (5)
• D*—N═N—(M—N═N)u—K— (4)
• or
• —D*—N═N—(M—N═N)u—K (5),
• in which
• D* is the radical of a diazo component of the benzene or naphthalene series,
• M is the radical of a middle component of the benzene or naphthalene series,
• K is the radical of a coupling component of the benzene, naphthalene, pyrazolone,
• 6-hydroxypyrid-2-one or acetoacetic acid amide series,
• and u is the number 0 or 1, where D*, M and K can furthermore carry substituents customary in azo dyes,
• V1 and V2 independently of one another are hydrogen, halogen, C1-C4alkyl, C1-C4alkoxy, or substituted or unsubstituted phenyl, phenoxy, C2-C6alkanoylamino or benzoylamino and X1 is fluorine or chlorine.