Patent GB-867189-A (GB)
Title: Improvements in and relating to coating and impregnating preparations
IPC: C08L61/20
Filed: 1958-08-05
Abstract: Copolymers are prepared by polymerizing mixtures of (1) at least 25% of an ester of formula: <FORM:0867189/IV (a)/1> where R is hydrogen or C1-4 alkyl and R1 is the residue of a saturated cyclic alcohol, (2) 0,2 to 10% of an acid of formula: <FORM:0867189/IV (a)/2> where R is hydrogen or a C1-4 alkyl and (3) an ester of formula: <FORM:0867189/IV (a)/3> where R is hydrogen or a C1-4 alkyl and R2 is an alkyl or alkoxy alkyl group.  Polymerization may be effected continuously or discontinuously in bulk, solution or aqueous emulsion in the presence of emulsifiers and suspension stabilizers, and in the presence of catalysts such as peroxides, persalts and redox systems. The monomers may be partially prepolymerized.  Many suitable components are listed and examples describe the copolymerization in aqueous emulsion in the presence of triethanolamine, isooctanol, sodium alpha-hydroxyoctadecane sulphonate and potassium persulphate of (1 and 3) isobornyl acrylate, acrylic acid and beta-butoxyethyl acrylate and (2) cyclohexyl acrylate, acrylic acid and betabutoxyethyl acrylate. The polymers may be neutralized with aqueous ammonia.  Dispersions of the polymers may be mixed with pigments, fillers and plasticizers, e.g. dibutyl phthalate, dioctyl phthalate and sebacic acid esters, and may be used for coating fabrics of cotton, jute, hemp, straw, artificial and natural silk, nylon, polyacrylonitrile, glass fibres, paper and leather, and for sticking paper and metal sheets to form compound fabrics.  They may also be used, preferably together with aminoplasts in printing pastes and for impregnating fabrics of cellulose and cellulose derivatives, silk, wool, cotton, linen, polyamide, polyester, polyacrylonitrile and glass fibres.  The aminoplast may comprise a water-insoluble, organic solvent-soluble ether or ether-ester of a condensate of formaldehyde and an amino compound and a water-soluble condensate of formaldehyde and an amino compound, or ether thereof.  Many suitable aminocompounds and alcohols which may be used in the preparation of the condensates are listed and examples describe printing pastes comprising (A) allyl ether of hexamethylol melamine esterified with soya bean fatty acid and water-soluble methyl ether of a urea-formaldehyde condensate, (B) dimethylolurea butyl ether and (C) watersoluble methyl ether of a urea-formaldehyde condensate.ALSO:Compositions for dyeing and printing textiles comprise pigments and aqueous emulsions of copolymers prepared by polymerizing mixtures of (1) at least 25% of an ester of the formula:-  <FORM:0867189/IV(c)/1> where R1 is the residue of a saturated cyclic alcohol, (2) 0,2 to 10% of an acid of the formula: <FORM:0867189/IV(c)/2> and (3) an ester of the formula:- <FORM:0867189/IV(c)/3> where R2 is an alkyl or alkoxyalkyl group, R being hydrogen or a C1-4 alkyl group.  The compositions may also comprise fillers, plasticizers, e.g. dibutyl phthalate, dioctylphthalate and sebacic acid esters, and aminoplasts, preferably (a) water-insoluble, organic-solvent soluble ethers or ether-esters of condensation products of amino-compounds with formaldehyde, and (b) water-soluble condensation products of amino-compounds with formaldehyde.  The compositions may be applied to fabrics of natural or regenerated cellulose and derivatives thereof, e.g. of cotton, linen, artificial silk or staple fibres of regenerated cellulose and cellulose acetate artificial silk, wool, natural silk, synthetic fibrous materials such as polyamides, polyesters and polyacrylonitrile and glass fibers.  Many suitable components for the preparation of the resins are listed and examples describe the treatment of bleached mercerised cotton poplin with dispersions comprising pigments and (1) a copolymer of isobornyl acrylate, acrylic acid and beta-butoxy-ethyl acrylate, triethanol-amine, and Turkey red oil with (a) an allyl ether of hexamethylol melamine esterified with soya bean fatty acid, a water-soluble methyl ether of a urea-formaldehyde condensate and sodium alginate, and (b) a dimethylolurea butyl ether; (2) a copolymer of cyclohexyl acrylate, acrylic acid and beta-butoxy-ethyl acrylate, Turkey red oil, triethanolamine, sodium alginate and the aminoplasts of (1a); and (3) copolymer and aminoplasts as in (1a).