GB859990A - New monoazo triazine dyestuffs - Google Patents

Abstract

The invention comprises dyes, which in their free acid form, are of formula: <FORM:0859990/IV (c)/1> where A is a 1- sulpho -2- naphthyl group which may contain additional SO3H groups, X is H, Hlg or SO3H one Y is H or SO3H and the other: <FORM:0859990/IV (c)/2> where Z is Hlg, n is an integer and Q is a substituent of at most 13 C atoms bound to the triazine nucleus via a C, N, O or S atom. The dyes may be made by coupling an appropriate diazotised naphthylaminesulphonic acid with the required triazine component or by condensing appropriate triazine halides and azo dyes. Compounds containing Q bound to the triazine nucleus via N may be made by treating appropriate azo-triazine dyes, where Q is Hlg, with the required amine or ammonia. Indicated for A are 1- mono-, 1, 5- di- and 1, 5, 7- trisulphonaphthyl groups. Preferably n is 2 to 5, especially 2 and Q is a lower alkyl group or a sulphonated phenyl group. Representative of specified components corresponding to the naphthol sulphonic acid moiety of the dye molecule are 2- amino -5- naphthol -7- mono-and 1, 7 -di-, 2- amino -1- chloro -8- naphthol -6-mono-, 2- b - hydroxyethyl- and -butylamino -8-naphthol -6- mono- and 2- methylamino -5-naphthol -7- mono- and -8- naphthol -6- mono-sulphonic acids the last two compounds being especially preferred. Representative of specified triazine components are 2- methyl-, -cyclohexyl-, -dodecyl-, -21- methoxyphenyl- and -benzyl- 4, 6-dichloro -striazines and compounds obtained by treating cyanuric chloride with methyl-, di- (b -hydroxyethyl)-, benzyl- and dodecylamines, #s-toluidene, aniline -psulphonic acid, pamino-acetanilide, N- ethylaniline, piperidine, m-aminobenzotrifluoride, 2- naphthylamine, m-aminobenzoic acid, thio -b - naphthol, pthiocresol, pnitrophenol and propanol- 2. The dyes dye cellulose textile materials in conjunction with treatment by an acid-binding agent, see e.g. Specification 797,946 red to orange shades being obtained. Examples are provided of the preparation of the dyes and their use in dyeing cellulosic materials. The Provisional Specification relates to dyes, which in their free acid form contain at least 2 SO3H groups, and are of the above formula where A is an aryl residue free from hydroxyl or amino groups. A is indicated to be a benzene or naphthalene residue and may contain substituents such as bromine, nitro, benzamido, methyl, ethoxy, phenoxy, carboxy and sulphonic acid groups. Specifications 837,990 and 838,340 also are referred to. p