Patent GB-632177-A (GB)
Title: Improvements in synthetic resins
IPC: C08F36/20
Filed: 1946-11-07
Abstract: A polymerizable composition comprises (a) 1 to 50 per cent of one or more plasticizers; (b) 2 to 40 per cent of one or more liquid components containing only one CH2=C< group; (c) at least 20 per cent, preferably at least 40 per cent, of one or more compounds containing two or more unconjugated CH2=C< groups separated by a chain or chains of 8 to 45 atoms containing at least three oxygen and/or nitrogen atoms, or, if a mixture is used, the proportions of these compounds being such that the chains contain an average number of 8 to 45 atoms and at least three oxygen and/or nitrogen atoms. There are specified: (a) p  tricresyl phosphate, dibutyl sebacate or phthalate, dioctyl phthalate, phthalates of aliphatic alcohols or ether-alcohols of 3 to 10 carbon atoms, esters of phenols or aliphatic alcohols and long chain aliphatic sulphonic acids and methyl and butyl acetyl ricinoleates.  Aromatic hydrocarbons and chlorinated paraffin waxes may be used as plasticizer extenders; (b) styrene, vinyl acetate, methacrylic acid, methyl, butyl, b -ethoxyethyl and glycol monomethacrylates, allyl glycollate, monoallyl oxalate, mono-(allyl-glycollyl) succinate, mono-(acryloxyethylene) phthalate or carbonate and 2-hydroxy-21 acryloxydiethylene maleate; (c) the compounds described in Specifications 581,251, 588,660, 595,881, 596,467, 599,837, 606,716, 606,717 and 607,888, of which numerous examples are given; products obtained by condensation of two or more molecules of (1) a mono-hydroxy ester of acrylic, methacrylic or a -haloacrylic acid with one molecule of hexamethylol melamine, a polymethylol polyamide, or a methyl, ethyl, propyl or butyl ether thereof or (2) a mono-or di-hydroxy ester of acrylic, methacrylic or a -haloacrylic acid with one molecule of dimethylol urea, N : N1-dimethylol succinamide or adipamide, or a methyl, ethyl, propyl or butyl ether thereof, or hexamethylene diisocyanate.  The compositions may be polymerized in the presence of catalysts, e.g. benzoyl and lauryl peroxides, benzyl hyponitrite, the azo type catalysts described in Specification 626,155, and the photo-catalysts described in Specifications 567,777, 567,778 and 622,374.  When used for coating or laminating, e.g. paper, fabric or wood veneers, or as adhesives, a thickener, e.g. polymethyl methacrylate, may be added.  In examples: (1) a printed fabric is impregnated with a mixture of butyl methacrylate, dioctyl phthalate, dimethacrylic esters of low molecular weight dihydroxy glycol phthalates and benzoyl peroxide and pressed at 110 DEG  C. and 2 lbs. per square inch to form a stiffened glossy material suitable for lamp shades; (2) a printed cotton fabric similarly impregnated, except that tricresyl phosphate is used as plasticiser, is adhered to plywood at a temperature of 105 DEG  C. and a pressure of 5 lbs. per square inch; (3) eleven sheets of glass fibre cloth and one of copper gauze are impregnated with a mixture of b -ethoxyethyl methacrylate, dibutyl phthalate and the dimethacrylic esters and catalyst of example 1.  One sheet of glass fibre cloth, then the copper gauze and then the other sheets of glass fibre cloth are superimposed and adhered at 105 DEG  C. under a pressure of 5 lbs. per square inch to form a heating panel.ALSO:A polymerizable composition comprises (a) 1 to 50 per cent of one or more plasticisers; (b) 2 to 40 per cent of one or more liquid components containing only one CH2=C group; (c) at least 20 per cent, preferably at least 40 per cent, of one or more compounds containing two or more unconjugated CH2=C groups separated by a chain or chains of 8 to 45 atoms containing at least three oxygen and/or nitrogen atoms, or, if a mixture is used, the proportion of these compounds being such that the chains contain an average number of 8 to 45 atoms and at least three oxygen and/or nitrogen atoms.  There are specified: (a) tricresyl phosphate, dibutyl sebacate or phthalate, dioctyl phthalate, phthalates of aliphatic alcohols or ether-alcohols of 3 to 10 carbon atoms, esters of phenols or aliphatic alcohols and long chain aliphatic sulphonic acids and methyl and butyl acetyl ricinoleates.  Aromatic hydrocarbons and chlorinated paraffin waxes may be used as plasticiser extenders; (b) styrene, vinyl acetate, methacrylic acid, methyl, butyl, -ethoxyethyl and glycol mono-methacrylates, allyl glycollate, monoallyl oxalate, mono - (allyl - glycollyl) - succinate, mono-(acryloxy-ethylene-phthalate or carbonate and 2-hydroxy 21-acryl oxydiethylene maleate; (c) the compounds described in Specifications 581,251, 588,660, 595,881, 596,467, 599,837, [all in Group IV], 606,716, 606,717 and 607,888, [all in Group IV (a)], of which numerous examples are given; products obtained by condensation of two or more molecules of (1) a monohydroxy ester of acrylic, methacrylic or -haloacrylic acid with one molecule of hexamethylol melamine, a polymethylol polyamide, or a methyl, ethyl, propyl or butyl ether thereof, or (2) a mono- or di-hydroxy ester of acrylic, methacrylic or -haloacrylic acid with one molecule of dimethylol urea, N,N1-dimethylol succinamide or adipamide, or a methyl, ethyl, propyl or butyl ether thereof, or hexamethylene diisocyanate.  The compositions may be polymerized in the presence of catalysts, e.g. benzoyl and lauryl peroxides, benzyl hyponitrite, the azo type catalysts described in Specification 626,155, [Group IV (a)], and the photo-catalysts described in Specifications 567,777, 567,778, [Group IV], and 622,374, [Group IV (a)].  When used for coating or laminating, e.g. paper, fabric or wood veneers, or as adhesives, a thickener, e.g. polymethyl methacrylate may be added.  In examples: (1) a printed fabric is impregnated with a mixture of butyl methacrylate, dioctyl phthalate, dimethacrylic esters of low molecular weight dihydroxy glycol phthalates and benzoyl peroxide and pressed at 110 DEG  C. and 2 lbs. per square inch to form a stiffened glossy material suitable for lamp shades; (2) a printed cotton fabric similarly impregnated, except that tricresyl phosphate is used as plasticiser, is adhered to plywood at a temperature of 105 DEG  C. and a pressure of 5 lbs. per square inch; (3) eleven sheets of glass fibre cloth and one of copper gauze are impregnated with a mixture of ethoxyethyl methacrylate, dibutyl phthalate and the dimethacrylic esters and catalysts of example 1. One sheet of glass fibre cloth, then the copper gauze and then the other sheets of glass fibre cloth are superimposed and adhered at 105 DEG  C. under a pressure of 5 lbs. per square inch to form a heating panel.