Patent ID: 6870035

Claim:
A disazo dye of the formula (2) wherein M is hydrogen or an alkali metal; R 5 and R 6 are identical or different and are hydrogen, methyl, methoxy, sulfo, cyano or chloro; R 11 is hydrogen or alkyl or phenyl, which is optionally mono- or di-substituted by an alkyl, alkoxy, ester, ureido, carboxamido, hydroxy, chloro, cyano of sulfo group; L 3 is a fiber-reactive group of the formulae (5a-d): wherein: R 12 has one of the meanings of R 11 ; Y is in each instance, independently of one another, vinyl or is ethyl which is substituted in the β-position by a substituent which is optionally eliminated by the action of an alkali, forming the vinyl group, *— is the bond to the aromatic ring; X is chloro or fluoro; Z has one of the meanings of X, is hydrogen or cyano; Q is chloro, fluoro, cyanamido, hydroxy, alkoxy of 1 to 4 carbon atoms, pyridino, carboxypyridino, carbamoylpyridino or is a group of the formulae (6a) or (6b), in which R 13 is hydrogen, alkyl of 1 to 4 carbon atoms, alkoxy of 1 to 4 carbon atoms, sulfoalkyl of 1 to 4 carbon atoms, phenyl unsubstituted or substituted by 1 to 2 substituents selected from the group of substituents consisting of chlorine, bromine, methyl, ethyl, methoxy, sulfo, acetamido, ureido and carboxy; R 14 has one of the meanings given for R 13 ; R 15 has one of the meanings given for R 13 , or R 13 and R 14 form a cyclic ring system of the formulae (6c) or (6d) wherein R o is a hetero group or a methylene group; G is arylene, C 1 -C 6 -alkylene or alkylene-arylene, each unsubstituted or substituted or being alkylene of 2 to 6 carbon atoms, if interrupted by a hetero group, W 1 is naphthyl group of the formula (4) in which M is defined as above; * denotes the bond to the diazo group; L 9 and L 10 are identical or different and are hydrogen, methyl, methoxy, sulfo, cyano, or chloro; n is in each case independently 0 or 1; and m is 1 and L 5 has one of the meanings of L 3 .