Patent GB-929451-A (GB)
Title: Process for fixing pigments on fibrous materials and flat structures
IPC: D06P1/44
Filed: 1961-03-06
Abstract: Compounds of the formula:-  <FORM:0929451/IV(a)/1> wherein X represents a radical of the formula:-  <FORM:0929451/IV(a)/2> wherein R is an aromatic radical; R1 is -H, -SO3H or -COOH; R2, R3 and R4 each represent -H, -CH3 or -OCH3; R1, R11 and R111 each represent -H or a 1-5C alkyl radical; A is the radical of a polybasic acid, e.g. sulphuric or phosphonic acid; n is 1 or 2 and Y and Z are -Cl or have the same meaning as X, are prepared by reacting cyanuric chloride with 1-3 mols of compounds of the formula:-  <FORM:0929451/IV(a)/3> preferably in aqueous solution at 0-80 DEG C. in the presence of an acid-binding agent.  Alternatively the compounds may be obtained by reacting cyanuric chloride with 1-3 mols of compounds of the formula:- <FORM:0929451/IV(a)/4> if desired under anhydrous conditions and subsequently converting the reaction products into their esters with polybasic inorganic acids, e.g. concentrated sulphuric or phosphoric acid.  Alkali metal salts of the above compounds are described.  Specifications 828,052, 851,976, 922,458 and 922,459 are referred to.ALSO:In a process for the production of pigment prints or dyeings on fibrous materials and flat structures an aqueous printing paste or padding liquor is used which contains (a) a pigment, (b) a binding agent comprising a high molecular weight compound which contains hydroxyl groups, (c) as cross-linking agent a compound which can be converted in alkaline conditions into a substance containing a vinylsulphone pound which is transformed into an alkali at elevated temperatures.  (c) may be a compound of the formula <FORM:0929451/IV(a)/1> wherein X represents an amine radical of the formula <FORM:0929451/IV(a)/2> wherein R is an aromatic radical; R1 is -H, -Cl, -SO3H or -COOH; R2, R3 and R4 are -H or an alkyl radical containing 1-5 carbon atoms; A is a radical of a polybasic inorganic acid; n is 1 or 2 and Y and Z are -Cl or have the same meaning as X.  Preferably (C) is the reaction product of 1 mole of cyanuric chloride with 1 mole of 1-aminobenzene-4-b -(hydroxyethyl)-sulphone-sulphuric acid ester or with 1-3 moles 1-amino-2-methoxy-benzene-5-b -(hydroxyethyl)-sulphone-sulphuric acid ester and may be used in an amount of 1-15% by weight of colouring medium.  (b) may be starch, tragacanth, carob bean flour, British gum, sugar, sugar alcohols, cellulose esters and ethers, polyvinyl alcohols and acetals, copolymers of vinyl and acrylic ester compounds and the like and may be in large excess. (d) may be alkali metal hydroxide, carbonate and bicarbonate or for the heat-transformable type alkali metal salts of organic acids such as acetic and trichloracetic.  The dried prints or paddings may be fixed by steaming at 98 DEG -102 DEG C., dry heating at 90 DEG -200 DEG C. or where (d) is omitted by treating in a bath containing 0,3-5% caustic alkali at 60 DEG -100 DEG C.  Further thickening of the printing paste may be effected by the addition of an oil-in-water emulsion or an alginate.  Substrates to be dyed or printed may be of natural or regenerated cellulose, acetylated cellulose, wool, silk, polyamide, polyester, polyacrylonitrile, polyvinyl chloride or glass fibre, asbestos, paper or cardboard. Examples are given in which a variety of pigments are used. Specifications 828,052, 851,976, 922,458, and 922,459 are referred to.