Patent GB-954589-A (GB)
Title: Improvements relating to low temperature pigment binder compositions and their use in colouring textile material
IPC: D06P1/44
Filed: 1961-10-23
Abstract: Aqueous pigment preparations suitable for pad dyeing or printing textile material comprise 0.025 to 2% by weight of the composition of a latent acid catalyst, a water-insoluble pigment and a binder containing (a) 90 to 10% by weight of a soft latex component obtained by the polymerization of 2 to 10% by weight of methacrylic acid, 60 to 85% by weight of butadiene and 38 to 5% by weight of styrene or acrylonitrile and (b) 10 to 90% by weight of a hard latex component containing a polymer of 65 to 75% by weight of ethyl acrylate, 10 to 15% by weight of methyl methacrylate and 15 to 10% by weight of styrene.  Preferably the hard latex component contains 0.5 to 10% by weight of the component of a copolymer of methacrylic acid and/or methacrylamide with ethyl acrylate, methyl methacrylate and styrene. Specified latent acid catalysts are ammonium nitrate, thiocyanate, sulphate and chloride, diammonium hydrogen phosphate and morpholine and pyridine salts of mineral acids.  The preparations may also contain wetting agents, e.g. alkaryl sodium sulphonates and ethylene oxide condensates with octyl and nonyl phenols.  Examples describe preparations comprising an aqueous pigment concentrate containing phthalocyamine green, sodium lauryl sulphate, sodium diisopropyl naphthalene sulphonate, casein, methyl cellulose, butylated melamine formaldehyde condensate, antifoam agent, xylene and mineral spirits; an aqueous extender comprising casein, sodium lauryl sulphate, ammonium lauryl sulphate, butylated melamine formaldehyde condensate, methyl cellulose, ammonium hydroxide and mineral spirits; and a binder comprising a copolymer of methacrylic acid, butadiene and acrylonitrile, a copolymer of ethyl acrylate, methyl methacrylate, styrene, methacrylic acid and methacrylamide, and ammonium nitrate.ALSO:Textile materials may be pad dyed and printed with aqueous pigment preparations comprising 0.025 to 2% by weight of the composition of a latent acid catalyst, a water-insoluble pigment and a binder containing (a) 90 to 10% by weight of a soft latex component obtained by the polymerisation of 2 to 10% by weight of methacrylic acid, 60 to 85% by weight of butadiene and 38 to 5% by weight of acrylonitrile or styrene and (b) 10 to 90% by weight of a hard latex component containing a polymer of 65 to 75% by weight of ethyl acrylate, 10 to 15% by weight of methyl methacrylate and 10 to 15% by weight of styrene.  Preferably the hard latex component contains 0.5 to 10% by weight of the component of a copolymer of methacrylic acid and/or methacrylamide with ethyl acrylate, methyl methacrylate and styrene.  Specified latent acid catalysts are ammonium nitrate, thiocyanate, sulphate and chloride, diammonium hydrogen phosphate and morpholine and pyridine salts of mineral acids.  Examples describe the printing of rayon, polyamide, polyester and polyester/cotton blend fabrics with aqueous pigment preparations comprising an aqueous pigment concentrate containing phthalocyanine green, sodium lauryl sulphate, sodium diisopropylnaphthalene sulphonate, casein, methyl cellulose, butylated melamine formaldehyde condensate, antifoam agent, xylene and mineral spirits; an aqueous extender comprising casein, sodium lauryl sulphate, ammonium lauryl sulphate, butylated melamine formaldehyde condensate, methyl cellulose, ammonium hydroxide and mineral spirits; and a binder comprising a copolymer of methacrylic acid, butadiene and acrylonitrile, a copolymer of ethyl acrylate, methyl methacrylate, styrene, methacrylic acid and methacrylamide, and ammonium nitrate.  The prints are cured by heating.