New, water-insoluble azo dyes, processes for their preparation and their use for the dyeing or printing

摘要

pThe present invention provides water-insoluble azo dyestuffs of the general formula (I IMAGE wherein D represents the radical of a diazo component of the benzene, azobenzene, naphthalene, thiazole, benzothiazole, thiadiazole, benzisothiazole or indazole series, which is free from sulfonic acid groups and in which the ring or each ring independently is unsubstituted or substituted by one or more substituents selected from halogen atoms, for example fluorine, chlorine and bromine atoms, and nitro, cyano, alkyl, alkoxy, alkylsulfonyl, sulfonamido, trifluoromethyl, alkycarbonyl, chloralkylcarbonyl, alkylcarbonylamino, chloroalkylcarbonylamino, benzoyl, chlorobenzoyl, benzoylamino, chlorobenzoylamino, phenoxy, oxime, carboxylic acid alkyl ester and carboxylic acid amide groups, the alkyl and alkoxy groups and moieties each having from 1 to 4 carbon atoms, R1 and R2, which may be the same or different, each represents an alkyl group having from 1 to 4 carbon atoms, and R3 represents a hydrogen atom or an alkyl or alkoxy group having from 1 to 4 carbon atoms./p[GB2024235A]