Patent GB-986544-A (GB)
Title: Process for fixing pigments on fibrous materials and flat structures
IPC: D06P1/44
Filed: 1962-03-22
Abstract: Amines of the formula <FORM:0986544/C2/1> wherein R is an aromatic radical, particularly a phenyl or naphthyl radical, R1 is H1Cl, -SO3H or -COOH, R2, R3 and R4 are each H1 -CH3 or -OCH3, R1 and R11 are each H or a 1-4 C alkyl, A is the radical of a polybasic inorganic acid, e.g. SO3H, and n is 1 or 2, are condensed with cyanuric chloride to form compounds of the formula <FORM:0986544/C2/2> wherein Y and Z are Cl or are the same as X which is the radical of an amine of the above formula, which compounds are employed as cross-linking agents in pigment dyeing and printing processes. The amines may be prepared by reacting p-nitro-anilines which may be substituted, e.g. p-nitromethylaniline, with carbylsulphate and reducing the reaction product to the amine.  The condensation 1-3 mols. of the amine and cyanuric chloride may be carried out in aqueous solution at 0-80 DEG C. in the presence of alkalis.  A number of amines are listed which are ethionylamino-aminobenzenes. Specifications 828,052, 851,976, 922,458 and 922,459 also are referred to.ALSO:Fibrous materials and flat structures are dyed or printed with a composition which contain (a) a pigment, (b) a binding agent comprising a high molecular compound of natural or synthetic origin which contains at least 3 hydroxyl groups, (c) as cross-linking agent a compound of the formula <FORM:0986544/D1-D2/1> wherein X is the radical of an amine of the formula <FORM:0986544/D1-D2/2> wherein R is an aromatic radical, R, is -H, -Cl, -So3H or -CooH; R2, R3 and R4 each represent -H, -CH3 or -OCH3:R1 and R11 each represent -H or an alkyl group having 1-4 carbon atoms; A is a radical of a polybasic inorganic acid; n is 1 or 2 and Y and Z are -Cl or the same as X and then, to achieve fixation the treated material is heated in the presence of (d) an alkali or a compound which is transformed into an alkali at the elevated temperature.  Suitable amino compounds for condensation with cyanuric chloride to form compounds (c) are specified.  Suitable compounds (b) are starch, tragacanth, carbo bean flour which may be partially etherified British gum, sugar and sugar alcohols, methyl cellulose, carboxymethyl cellulose, polyvinyl alcohols of K-value 10-100 having a residue acetyl group content of 0-90%, polyvinyl alcohols acetalised with formaldehyde, acetaldehyde, benzaldehyde to an extent of 0-99% as well as copolymers of vinyl alcohol with many other specified unsaturated monomers.  The alkaline substances (d) may be alkali metal hydroxide, carbonates or bicarbonates, sodium or potassium acetate or trichloracetate.  A number of inorganic and organic pigments (a) are specified.  The dyeing or printing compositions may further contain resins, e.g. substantially condensed oil-soluble aminoplast or alkyd resins or copolymers based on butadiene styrene, butadiene/acrylonitrile or copolymer dispersions of the vinyl or acryl type, as well as thickening agents of the alginate or oil-in-water emulsion type. The process may be accomplished by applying, by padding or printing a composition containing (a), (b) and (c) and fixing by passing through an alkaline bath at 60-100 DEG C. or by applying a composition containing (a), (b), (c) and (d) and fixing by streaming at 98-102 DEG C. or dry heating at 90-200 DEG C.  The specified substrates are fibres or flat structures of natural or regenerated cellulose, cellulose acetate, wool, silk, synthetic fibres of polyamide, aromatic polyester, polyacrylonitrile, polyvinyl chloride, glass fibres, asbestos, paper and cardboard.  Examples are given.  Specifications 828,052, 851,976, 922,458 and 922,459 also are referred to.