Patent GB-676806-A (GB)
Title: Textile printing and padding pastes
IPC: D06P1/44
Filed: 1949-12-14
Abstract: A textile printing or padding paste comprises an aqueous solution of a salt of a polymer of an ester of acrylic acid or of a substituted acrylic acid, said polymer containing amino or imino groups and a polyfunctional compound difficultly soluble in water at room temperature, the functional groups being capable of reacting with amino and imino radicals.  The preferred polymers are those of acrylic or methacrylic acid esters, but these may be copolymerized with vinyl esters, styrene, butadiene, fumaric acid esters or maleic acid esters.  The amino or imino groups may be produced by e.g. copolymerizing an acrylic ester and acrylonitrile and then reducing the nitrile groups wholly or partly to amino groups, or by e.g. copolymerizing an acrylic ester and acrylamide, adding this to the above copolymer and then reducing, or by e.g. reacting a polyacrylic ester and ethanolamine, and adding acrylonitrile or cyanoethyl isocyanate or ethylene ionine when amino groups are reformed either directly or after subsequent reduction, or by e.g. partially saponifying a polyacrylic ester, reacting it with cyanoethyl-isocyanate and reducing the cyano group to an amino group or by e.g. condensing the polymers containing ester groups with bi- or polyfunctional amines such as ethylene diamine, diethylene triamine tetramethylene diamine, hexamethylene diamines, N-methylpropylene diamine, N-isobutyl propylene diamine, and diaminodipropylether. Specified polyfunctional compounds are those splitting off polyisocyanates e.g. the addition compounds of one mol. of a di-isocyanate to two mols. of a 1.3-diketone or of a 1.3-ketonic ester such as acetoacetic ester or malonic acid, or hexamethylol melamine, or the reaction product of 1 mol. of benzene-m-disulphochloride and 2 mols. of ethylene imine, or that of 1 mol. of hexane-di-isocyanate and 2 mols. of glycide, and especially triacrylformal, the condensation product of acrylonitrile and anhydrous formaldehyde or its polymers in the presence of acetic acid anhydride and an acid condensation agent. In examples (1) and (2) acrylic acid butyl ester in butanol is polymerized using benzoyl peroxide, the polymer boiled in butanol solution with 1-amino-3-methyl-amine-propane and an acetic acid solution of this polymer mixed with triacrylformal, tragacanth, water and a pigment dyestuff used as a printing paste; (3) sodium acetate, zinc oxide, ammonium thiocyanate, sodium chlorate and ammonium vanadate are also present; (4) lactic acid is also present, and (5) the ammonium thiocyanate of (3) is replaced by potassium ferrocyanide and aniline hydrochloride added.ALSO:A textile printing and padding paste comprises an aqueous solution of a salt of a polymer of an ester of acrylic acid or of a substituted acrylic acid, said polymer containing amino or imino groups and a polyfunctional compound difficultly soluble in water at room temperature, the functional groups being capable of reacting with amino and imino radicals.  The preferred polymers are those of acrylic or methacrylic acid esters, but these may be copolymerized with vinyl esters, styrene, butadiene, fumaric acid p  esters or malec acid esters.  Specified polyfunctional compounds are those splitting off polyisocyanates, e.g. the addition compounds of one mol. of a di-isocyanate and two mols. of a 1,3-diketone or of a 1,3-ketonic ester such as acetoacetic ester or malonic acid, or hexamethylol melamine, or the reaction product of 1 mol. of benzene-m-disulphochloride and 2 mols. of ethylene imine, or that of 1 mol. of hexane-di-isocyanate and 2 mols. of glycide and especially triacrylformal-the condensation product of acrylonitrile and anhydrous formaldehyde or its polymers in the presence of acetic acid anhydride and an acid condensation agent. In examples: (1) and (2) acrylic acid butyl ester in butanol is polymerized using benzoyl peroxide, the polymer boiled in butanol solution with 1-amino-3 methyl-amino-propane and an acetic acid solution of this polymer mixed with triacrylformal, tragacanth, water and a pigment dyestuff used as a printing paste; (3) sodium acetate, zinc oxide, ammonium thiocyanate, sodium chlorate and ammonium vanadate are also present; (4) lactic acid is also present; and (5) the ammonium thiocyanate of (3) is replaced by potassium ferrocyanide and aniline hydrochloride added.