Water-soluble disazo compound having arylcarboxamide diazo components, preparation thereof and use thereof

A reactive dye of the general formula I

• where
• D1 and D2 each represent a group of the general formula II
• where
• R1 is hydrogen, (C1-C4)-alkyl, aryl or substituted aryl;
• and
• R2 and R3 are independently hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, hydroxyl, sulfo, carboxyl, amido or halogen;
• A is a phenylene group of the general formula III
• where
• R4 and R5 are independently hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, hydroxyl, sulfo, carboxyl, amido or halogen;
• a naphthylene group of the general formula IV
• where
• R6 and R7 are independently hydrogen, (C1-C4)-alkyl,
• (C1-C4)-alkoxy, hydroxyl, sulfo, carboxyl, amido or halogen;
• or a polymethylene group of the general formula V
• —(CR8R9)k— (V)
• where
• k is an integer greater than 1;
• and
• R8 and R9 are independently hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, hydroxyl, cyano, amido, halogen or aryl;
• and
• X1 is hydrogen or —SO2—Z;
• or
• represent a phenyl radical of the general formula VI
• where
• R10 and R11 are independently hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, hydroxyl, sulfo, carboxyl, amido or halogen;
• and
• X2 has one of the meanings of X1;
• or
• represent a naphthyl radical of the general formula VII
• where
• R12 and R13 are independently hydrogen, (C1-C4)-alkyl, (C1-C4)-alkoxy, hydroxyl, sulfo, carboxyl, amido or halogen;
• X3 has one of the meanings of X1;
• Z is —CH═CH2, —CH2CH2Z1 or hydroxyl,
• where
• Z1 is hydroxyl or an alkali-detachable group;
• and
• M is hydrogen or an alkali metal;
• where at least one of D1 and D2 is a group of the general formula II;
• where, if A is a group of the general formula V, R1 is aryl or substituted aryl;
• and
• where the reactive dye of the general formula I contains at least one —SO2—Z group.