Patent GB-935977-A (GB)
IPC: C09B45/48
Abstract: 935,977. Metallized azo triazine dyes. IMPERIAL CHEMICAL INDUSTRIES Ltd. Feb. 24, 1961 [March 14, 1960], No. 8885/60. Class 2(4) The invention comprises dyes of formula where A is the residue of a monoazo dye containing a heavy metal in complex form, n is an integer, preferably 1 to 5, and R is a sulphonated mono- or di-cyclic aryl radical. The complexes may be made by metallizing appropriate dyes but are preferably obtained by condensing, in either order, a cyanuric halide, preferably the chloride, with 2 moles of a sulphonated phenol or naphthol and 1 mole of the necessary metallized aminoazo dye. Condensation is preferably effected in an aqueous medium in the presence of acid-binding agents. Representative of specified values for R are 3-sulpho-, 2,4-disulpho-, 2-nitro-4-sulpho- and 4-sulpho-2-carboxy-phenyl and 6-sulpho-2-naphthyl. 1,2-Chromium and -cobalt and 1,1-copper complexes are described of dyes of the following classes:- where D is a benzene residue, m is 1 or 2, (CO) m-1 OH is oto the azo group and the triazinylamino group preferably attached to the 6-, 7- or 8-position of the naphthalene nucleus which may contain a sulphonic acid group in the 5- or 6-position; preferred being those dyes where D 1  has a sulphonic or carboxylic acid group p to the (CO) m-1 OH group and. the benzene residue may contain substituents, e.g. Cl, Br, Me and NO 2  groups, (2) dyes similar to those of (1) but with the triazinylamino group attached to a benzoylamino or anilino group which is in the 6-, 7- or 8-position of the naphthalene nucleus, (3) dyes as in (1) where the triazinylamine group is in the 6- or 7-position of the naphthalene nucleus, m is 1 and D 1  is a sulphonated 1 -naphthyl radical with (CO) m-1 OH in the 2-position of the naphthalene nucleus and, preferably, also contains a nitro group where D 2  is a benzene radical with (CO) m-1 OH o to the azo group and the triazinylamino group p to the azo or (CO) m-1 OH groups and E is the residue of a naphthol coupling component with OH o to the azo group, preferably a 1 -hydroxy-3-sulpho-2-naphthyl residue with an anilino or sulphonated anilino group in the 6- or 7-position of the naphthalene nucleus, (5) dyes of class (4) where E is a 5-pyrazolone coupled to the azo group in the 4-position of the pyrazole ring and (6) where E 1  is the residue of a 5-pyrazolone coupled to the azo group in the 4-position of the pyrazole ring and carrying, in the 1-position of the pyrazole ring, a mono- or di-cyclic aryl radical, which may be stilbenyl, to which is attached the triazinylamino group. Nickel is also specified as a metal from which the dyes may be derived. The dyes are reactive to textile materials containing a reactive hydrogen atom such as cellulosic and nitrogenous textile materials and colour, e.g. cotton, viscose rayon, regenerated cellulose, wool, silk, cellulose acetate, polyamides, polyacrylonitriles, modified polyacrylonitrile and aromatic polyester fibres. The dyes are applied as an aqueous dispersion. Examples are provided of the preparation of the dyes and their use in dyeing cellulosic materials in a variety of colours. In the Provisional Specification A is the residue of an azo dye. Specifications 926,039, 934,984 and 935,978 are referred to.