GB923887A - New monoazo triazine dyestuffs - Google Patents

Abstract

The invention comprises dyes which, as free acids, are of formula <FORM:0923887/IV(a)/1> where D is a phenylene or sulphophenylene residue, X is Cl or Br, Y is Cl or Br, OAIK or aryloxy or an amino group which may be substituted, A is a phenylene residue, Z is So3H or COOH and m is 1 or 2 provided that the number of So3H and COOH groups in the dye is at least 3. The dyes are made by conventional diazotization and coupling processes, the diazo component being an aminophenylaminotriazine, by condensing appropriate dyes and halotriazines, or by treating appropriate dihalotriazine dyes with a compound TQ, where T is H, or alkali metal, and Q is an alkoxy, aryloxy, amino or substituted amino group. Representative of specified values for Y are methoxy, methylphenoxy, nitrosulphophenoxy, ethyl-di-(b -hydroxyethyl) and N-methyl-N-propyl-amino, di-sulphoanilino, carboxyanilino and naphthylamino. The dyes colour cellulosic materials, e.g. cotton, viscose rayon and linen textiles, in reddish- or yellowish-brown shades, and are preferably used in conjunction with an acid-binding agent. Preferred dyes are those of formula <FORM:0923887/IV(a)/2> where D1 is sulphophenylene and of formula Examples are provided of the preparation of the dyes and their use in colouring cellulosic textile materials. In the Provisional Specification dyes are described of formula <FORM:0923887/IV(a)/3> where D is a benzene, diphenyl, stilbene, diphenylamine, benzanilide or naphthalene residue, which may be substituted, P is H or SO3H, R is H or alkyl, X is Cl or Br, Y is Cl or Br, alkyl, alkoxy, aryl, aryloxy, thioaryl, thiocyano or substituted or unsubstituted amino, Z is H, alkyl, alkoxy or SO3H o to the azo link, m is 1-3, n is 1-5 and A is a benzene or naphthalene residue which may be substituted. Specifications 797,946, 838,337, 842,933, 851,537 and 876,923 are referred to.