Patent GB-949333-A (GB)
Title: Printing paste
IPC: D06P1/44
Filed: 1961-09-15
Abstract: A printing paste comprises a pigment and a resin in an emulsion containing water and a water-immiscible organic liquid, the resin comprising a copolymer of a carboxylic acid amide and at least one other monomer containing a CH2=C< group, amido nitrogen atoms in the copolymer being replaced by the structure <FORM:0949333/C3/1> wherein R is hydrogen or a hydrocarbon radical and R1 is hydrogen or a C4-C20 organic radical, e.g. a butyl, pentyl, octyl, decyl or benzyl group. Suitable unsaturated amides are acrylamide methacrylamide, ethacrylamide, crotonamide, itaconic, maleic and fumaric diamides, maleuric acid and esters thereof and N-carbamyl maleimide. As comonomers there are specified styrene, alpha-chlorostyrene, vinyl toluene, vinyl acetate, acrylonitrile, acrylic and methacrylic acids and ethyl acrylate. The unsaturated amide, either before or after copolymerization, is reacted with an aldehyde, preferably in solution in an alkanol, as described in Specifications 826,652 and 920,809. The emulsions are made either by adding water to a solution of copolymer in an organic solvent, or by adding organic solvent to an aqueous emulsion of copolymer. Solvents specified are butanol, toluene, xylene, naphtha and mixtures thereof. Pigments specified are phthalocyanine blue and green, carbon black, iron oxides, chrome yellows, titanium dioxide, lithopone, aluminium, bronze, brass, chromium and gold powders, indigo, anthraquinone pigments and azo pigments. Also present in the compositions may be epoxy resins and emulsifiers, e.g. glycerol monooleate monolaurate and monoricinoleate, a product obtained by mixing together a styrenated linseed oil, phthalic anhydride, pentaerythritol alkyd, xylene, ammonium sulphate and water, long chain sulphates and sulphonates and cationic emulsifiers.  The compositions are applied to textiles to produce coatings which cure on heating.ALSO:Textiles made from natural or synthetic fibres are coloured by applying thereto a printing paste which comprises a pigment and a resin in an emulsion containing water and a water-immiscible organic liquid, followed by heating to cure the applied material. The resin of the composition is a copolymer of a carboxylic acid amide and at least one other monomer containing a CH2 = C\yQ group, amido nitrogen atoms in the copolymer being replaced by the structure <FORM:0949333/D1-D2/1> wherein R is hydrogen or a hydrocarbon radical and R1 is hydrogen or a C4-C20 organic radical, e.g. a butyl, pentyl, octyl, decyl, or benzyl group. Specified unsaturated amides are acrylamide, methacrylamide, ethacrylamide, crotonamide, itaconic, maleic and fumaric diamides, maleuric acid and esters thereof and N-carbamyl maleimide.  As comonomers there are specified styrene, alphachlorostyrene, vinyl toluene, vinyl acetate, acrylonitrile, acrylic and methacrylic acids and ethyl acrylate.  Such copolymers may be made by the methods described in Specifications 826,652 and 920,809.  Water-immiscible liquids specified are butanol, toluene, xylene, naphtha and mixtures thereof.  Pigments specified are phthalocyanine blue and green, iron oxides, titanium dioxide, chrome yellows, lithopone, aluminium, brass, bronze, chromium and gold powders, carbon black, indigo and azo and anthraquinone pigments.  Also present in the compositions may be epoxy resins and emulsifiers.  Suitable textiles, both woven and unwoven, are those made from cotton, linen, rayon, silk, wool, cellulose acetate, nylon, polyglycol terephthalate, and acrylonitrile polymers.