Patent GB-954588-A (GB)
Title: Improvements relating to low temperature pigment binder compositions and their use in coloring 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 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 cross-linking agent obtained by the reaction of an aliphatic aldehyde of not more than 4 carbon atoms with urea, thiourea, biuret, melamine or derivatives thereof and optionally subsequent reaction with an alkanol of not more than 2 carbon atoms. Specified aldehydes are formaldehyde, acetaldehyde, glyoxal and propanedial, and specified crosslinking agents are reaction products of formaldehyde and acetaldehyde with urea, N,N-ethylene urea, N,N1-ethylene urea, N,N1-dimethyl urea, N,N1-diethyl urea and subsequent reaction products with methanol and ethanol, e.g. N,N1-dimethoxymethy urea, N,N1-diethoxyethyl urea, tetramethoxymethyl urea and tetraethoxyethyl urea, condensates of formaldehyde with melamine and N,N-dimethylmelamine, and dimethoxy methyl monomethylol melamine and diethoxymethyl monomethylol melamine. 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 aqueous pigment preparations comprising (1) an azo red pigment, a copolymer of methacrylic acid, butadiene and styrene, a polymethylated melamine formaldehyde condensate, diammonium phosphate, casein, sodium lauryl sulphate, ammonium lauryl sulphate, butylated melamine formaldehyde condensate, methyl cellulose, ammonium hydroxide and mineral spirits, and (2) phthalocyanine blue, sodium lauryl sulphate, sodium diisopropylnaphthalene sulphonate, casein, methyl cellulose, butylated melamine formaldehyde condensate, antifoam agent, xylene, mineral spirits, sodium alginate, a copolymer of methacrylic acid, butadiene and styrene, dimethoxymethyl monomethylol melamine and diammonium phosphate.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 cross linking agent obtained by the reaction of an aliphatic aldehyde of not more than 4 carbon atoms with urea, thiourea, biuret, melamine or derivatives thereof and optionally subsequent reaction with an alkanol of not more than 2 carbon atoms. Specified aldehydes are formaldehyde, acetaldehyde, glyoxal and propanedial, and specified cross linking agents are reaction products of formaldehyde and acetaldehyde with urea, N, N-ethylene urea, N, N1-ethylene urea, N, N1-dimethyl urea, N, N1-diethyl urea and subsequent reaction products with methanol and ethanol, e.g. N, N1-dimethoxymethyl urea, N, N1-diethoxyethyl urea, tetramethoxymethyl urea and tetraethoxyethyl urea, condensates of formaldehyde with melamine and N, N-dimethyl melamine, and dimethoxymethyl monomethylol melamine and diethoxymethyl monomethylol melamine.  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 (1) polyamide, polyester and cotton fabrics with aqueous pigment preparations comprising an azo red pigment, a copolymer of methacrylic acid, butadiene and styrene, a polymethylated melamine formaldehyde condensate, diammonium phosphate, casein, sodium lauryl sulphate, ammonium lauryl sulphate, butylated melamine formaldehyde condensate, methyl cellulose, ammonium hydroxide and mineral spirits; and (2) cotton/silk and polyester/cotton blend fabrics with aqueous pigment preparations comprising phthalocyanine blue, sodium lauryl sulphate, sodium diisopropylnaphthalene sulphonate, casein, methyl cellulose, butylated melamine formaldehyde condensate, antifoam agent, xylene, mineral spirits, sodium alginate, a copolymer of p  methacrylic acid, butadiene and styrene, dimethoxymethyl monomethylol melamine and diammonium phosphate.  The prints are cured by heating.