Bisazo compounds and use thereof as fiber reactive dyes

A bisazo compound represented by the following formula (I) or a salt thereof:

• ##STR761## wherein R.sup.1 is hydrogen or unsubstituted or substituted alkyl;
• D is phenylene unsubstituted or substituted with one or two substituents selected from sulfo, alkoxy, halogeno and carboxy, or naphthylene unsubstituted or substituted once or twice by sulfo;
• one of X.sup.1 and X.sup.2 is NH.sub.2 and the other is OH;
• Z.sup.1 is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z' in which Z' is a group capable of being split by the action of an alkali;
• B is a group represented by the following formula (1) or (2):
• ##STR762## wherein the mark * means a bond linking to an azo group, and R.sup.2 is hydrogen, methyl or methoxy;
• and
• when X.sup.1 is OH, L is a triazinyl group represented by any one of the following formulas (II) to (V):
• ##STR763## wherein R.sup.3 is hydrogen or unsubstituted or substituted alkyl;
• R.sup.4 is hydrogen, alkyl, alkoxy or halogeno;
• R.sup.5 and R.sup.6 independently of one another are each hydrogen or unsubstituted alkyl, or R.sup.5 and R.sup.6 conjointly form a heterocyclic ring which may contain nitrogen, oxygen or sulfur as a ring atom;
• R.sup.7 is straight or branched alkyl unsubstituted or substituted with one or two substituents selected from alkoxy, sulfo, carboxy, the group --COOR wherein R is alkyl, hydroxy, cyano, sulfato, halogeno, carbamoyl and sulfamoyl;
• R.sup.8 is straight or branched alkyl unsubstituted or substituted with one or two substituents selected from alkoxy, sulfo, carboxy, the group --COOR wherein R is alkyl, hydroxy, cyano, sulfato, halogeno, phenyl, substituted phenyl, carbamoyl and sulfamoyl, or phenyl unsubstituted or substituted with one or two substituents selected from alkyl, substituted alkyl, alkoxy, substituted alkoxy, hydroxy, sulfo, cyano, carboxy, the group --COOR wherein R is alkyl, sulfamoyl, carbamoyl, substituted amino and halogeno;
• R.sup.10 is hydrogen or straight or branched alkyl unsubstituted or substituted with one or two substituents selected from hydroxy, halogeno, alkoxy, cyano, sulfo, sulfato, carboxy, the group --COOR wherein R is alkyl, carbamoyl, sulfamoyl, amino and dimethylamino;
• R.sup.11 is hydrogen, straight or branched alkyl unsubstituted or substituted with one or two substituents selected from hydroxy, halogeno, alkoxy, cyano, sulfo, sulfato, carboxy, the group --COOR wherein R is alkyl, carbamoyl, sulfamoyl, amino and substituted amino, or phenyl unsubstituted or substituted with one or two substituents selected from sulfo, alkyl, alkoxy, hydroxy, halogeno, cyano, carboxy, the group --COOR wherein R is alkyl, carbamoyl, sulfamoyl, amino, substituted amino, --SO.sub.2 CH.sub.2 CH.sub.2 OH and SO.sub.2 Z.sup.3, in which Z.sup.3 is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z' in which Z' is as defined above;
• or
• R.sup.10 and R.sup.11 conjointly form a heterocyclic ring which may contain nitrogen, oxygen or sulfur as a ring atom;
• Z.sup.2 is --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 Z' in which Z' is as defined above;
• and
• A is a divalent aliphatic group represented by the following formula (3), (4) or (5):
• ##STR764## in which W is straight or branched chain C.sub.1 -C.sub.6 alkylene unsubstituted or substituted by chloro, bromo, fluoro, hydroxy, sulfato, cyano, C.sub.1 -C.sub.4 alkylcarbonyloxy, C.sub.1 -C.sub.5 alkoxycarbonyl, carboxy or carbamoyl;
• W.sup.1 and W.sup.2 independently of one another are each straight or branched chain C.sub.2 -C.sub.6 alkylene;
• R.sup.9 is hydrogen, unsubstituted lower alkyl or phenyl;
• and m and n independently of one another are each an integer of 2 to 6;
• and
• when X.sup.1 is NH.sub.2, L is a triazinyl group represented by the formula (III) or (V) as defined above.