Patent ID: 6124441
Filing Date: 2000-09-26
Classification: C09B

Abstract:
A monoazo compound of the formula (1) ##STR10## where M is hydrogen or an alkali metal;D is a group of the formula (2a) or (2b) ##STR11## where M is as defined above,R.sup.1 is hydrogen, alkyl of 1 to 4 carbon atoms or alkoxy of 1 to 4 carbon atoms,R.sup.2 is hydrogen, sulfo or carboxy,R.sup.3 is hydrogen or sulfo, andR.sup.4 is hydrogen, sulfo or carboxy;Y is vinyl or is ethyl which is substituted in the .beta.-position by an alkali-eliminable substituent selected from the group consisting of chlorine, thiosulfato, phosphato, sulfato, acetyloxy and sulfobenzoyloxy.