GB877249A - New polyazo triazine dyestuffs - Google Patents

Abstract

The invention comprises dyes of formula:- <FORM:0877249/IV(c)/1> where D is a residue of the benzene series which may contain an azo group, X is a naphthol sulphonic acid residue, R is H or alkyl, Z is Br or Cl and E is a residue of a phenol, acetoacetarylide, pyrazolone, naphthol or 41, 61-di-halogeno-11, 31,51 - triazin- 21-ylaminonaphthol. They may be made by treating appropriate aminoazo dyes with cyanuric bromide or chloride. When D contains a metallizable group in the #s-position to one or both azo links the products may be metallized. Indicated residues for D are from benzene, diphenyl, benzanilide, diphenylurea, diphenylamine, phenylazophenyl, diphenylethane, 1, 4-bis(benzoylamino) benzene and 1, 2-bis (benzoylamino) ethylene. R is specified as methyl, ethyl, propyl and butyl. Representative of indicated compounds from which E is derived are phenol, #s-hydroxybenzoic acid, acetoacetanilide, 5-sulphoacetoacet-#s-anisidide, 1-(41-sulphophenyl)- 3-methyl- and -carboxy- 5-pyrazolone, 3-carboxy- 5-pyrazolone, 2-naphthol, 5, 8-dichloro-1-naphthol, 1-naphthol- 5-mono-, -3, 8-di- and -3, 6, 8- tri-sulphonic acids, 2-naphthol-6-mono-and -6, 8- di-sulphonic acids, 1, 8-dihydroxynaphthalene-3, 6-disulphonic acid, 2-benzoyl-and -phenyl-amino-8-naphthol-6-sulphonic acid, 1-(41, 61-dichloro-11, 31, 51-triazin-21-yl) amino- 8-naphthol- 3, 6-disulphonic acid and 1-N-(41, 61-dichloro-11, 31, 51-triazin-21-yl)-N-butylamino-8-naphthol-3, 6-disulphonic acid. Specified as metallizable groups are OH, O Alkyl, COOH and O CH2COOH. Specified metals are Cu, Ni, Co and Cr. Metallization may be effected before or after treatment of the aminoazo dyes with cyanuric halides. The dyes are preferably isolated at pH 6-8 vide Specifications 838,337 and 842,933. The dyes and their metal complexes colour cellulosic textile materials, especially when used as in Specification 797,946, in conjunction with treatment with an acid-binding agent. A preferred class of dyes is that where E is a phenol residue and the other end component is <FORM:0877249/IV(c)/2> where R and Z are as above and the naphthalene nucleus optionally contains an additional SO3H group in these 3 or 4 position, since the dyes yield colours which do not bleed on storing especially in a humid and acidic atmosphere. Examples are provided of the preparation of the dyes and their use in colouring cellulosic textile materials in shades of red, blue, green and grey. In the Provisional Specification D is any aryl residue. Specification 838,728 also is referred to.