Patent GB-1066085-A (GB)
Title: Monoazo dyestuffs
Inventor: FISHWICK BRIAN RIBBONS
IPC: C09B29/08
Filed: 1964-05-07
Abstract: Water-insoluble mono-azo dyes of general formula <FORM:1066085/C4-C5/1> in which A is the radical of a diazo component of the benzene, naphthalene, thiazole, benzthiazole, thiodiazole or thiophene series provided that the radical of the benzene series does not contain a cyano or a carbo-lower alkoxy group, Z is a hydrogen or halogen atom or a lower alkyl, lower alkoxy or formylamido radical, X is an alkylene radical of not more than 4 carbon atoms which is substituted by at least one halogen atom or a cyano, lower alkoxy, carbo-lower alkoxy, acylamino, nitro, lower alkyl - sulphonyl, monocyclic arylsulphonyl, monocyclic aryloxy, carbo monocyclic aryloxy, acyl, acyloxy or carbonamido group, and Y is hydrogen or lower alkyl or a substituted or unsubstituted monocyclic aryl, aralkyl or cyclo-alkyl radical or an alkylene radical of not more than 4 carbon atoms substituted by at least one halogen atom or hydroxy, cyano, lower alkoxy, carbo-lower alkoxy, acyl, acylamino nitro, oxirane, carbonamido or lower alkylsulphonyl group, provided that X and Y are not both alkylene radicals substituted by a carbo-lower alkoxy group, and that the dyes are free from sulphonic acid and carboxylic acid groups, are prepared by customary diazotization and coupling process.  The terms "lower alkyl" and "lower alkoxy" denote groups having 1-4 carbon atoms, "monocyclic aryl" radical is used to denote a phenyl radical or an alkyl derivative thereof, "acyl," "acylamino" and "acyloxy" denote groups derived from carboxylic acids.  The dyes give red-blue shades on synthetic textile materials.ALSO:Synthetic textile materials particularly secondary and tertiary cellulose acetate, polyethylene terephthalate, and polyhexamethyleneadipamide materials are dyed preferably at temperatures of 60-130 DEG C with or without the use of conventional carriers and thickening agents with water-insoluble monoazo dyes of general formula <FORM:1066085/D1-D2/1> in which A is a diazo component of the benzene, naphthalene, thiazole, benzthiazole, thiadiazole, or thiophene series provided that the benzene radical does not contain a cyano or a carbo-lower alkoxy group, 2 is a hydrogen or halogen atom or a lower alkyl, lower alkoxy or formylamido group, X is an alkylene radical of not more than 4 carbon atoms which is substituted by at least one halogen atom or a cyano, lower alkoxy, carbo-lower alkoxy, acylamino, nitro, lower alkyl-sulphonyl, monocyclic arylonlphonyl, monocyclic aryloxy, carbo monocyclic aryloxy, acyl, acyloxy or carbonamido group, and Y is hydrogen or a lower alkyl or a substituted or unsubstituted monocyclic aryl, aralkyl or cycloalkyl radical or a alkylene radical of not more than 4 carbon atoms substituted by at least one halogen atom or hydroxy, cyano, lower alkoxy, carbolower alkoxy, acyl, acylamino, nitro, oscirone, carbonamido or lower-alkyl sulphonyl group provided that X and Y are not both alkylene radicals substituted by a carbo-lower alkoxy group and that the dyes are free from sulphonic and carboxylic acid groups.  Orange-red-blue shades are obtained.