Water-soluble fiber-reactive disazo dyes, method for producing the same and the use thereof

Dyes of the general formula (1):

• where
• M is hydrogen, alkali, ammonium or the equivalent of an alkaline earth metal ion,
• v is 0 or 1 and
• Z is —CH═CH2 or —CH2CH2Z1,
• where
• Z1 is hydroxyl or an alkali-detachable group, and
• R1 is hydrogen or C1–C4-alkyl;
• R2 is a moiety of the general formulae (2), (3), (4) or (5)
• where
• T1 is hydrogen, methyl, fluorine or chlorine,
• T2 is hydrogen, fluorine or chlorine with the proviso that T2 and T1 are not both hydrogen;
• T3 is hydrogen, fluorine or chlorine;
• A is C1 to C4-alkyl which may be substituted by up to two substituents selected from the group consisting of chloro, bromo, hydroxyl and carboxyl, C2 to C4 alkenyl which may be substituted by up to two substituents from the group consisting of chloro, bromo and hydroxyl, or phenyl,
• L is phenylene or naphthalene, which may be substituted by up to two substituents selected from the group consisting of chloro, bromo, hydroxyl, C1 to C4-alkyl especially methyl, ethyl, sulfo and cyano, or else is a C2 to C6 alkylene;
• Z is —CH═CH2, —CH2CH2Z1,
• Where
• Z1 is hydroxyl or an alkali-detachable group.