Patent GB-989270-A (GB)
Title: Improvements relating to film-forming and coating compositions
IPC: C08J7/052
Filed: 1962-12-20
Abstract: Coating compositions comprise a vinylidene chloride copolymer containing 80 to 97% of vinylidene chloride, 0.5 to 5% of an aliphatic monocarboxylic acid amide derived from a water-insoluble acid and having 12 to 22 carbon atoms in the molecule, and dispersed throughout the copolymer and amide 0.2 to 5% of mica particles having their largest dimension between 5 and 70 microns, all the proportions being by weight of the copolymer. Many suitable monomers which may be copolymerized with vinylidene chloride are listed, including vinyl and isopropenyl esters, alkenyl ketones, alkenyl ethers, vinyl aromatic hydrocarbons, acrylic, methacrylic and chloracrylic esters, acrylic and methacrylic amides and nitriles, maleic anhydrides, maleic, fumaric and itaconic esters, halogen-substituted olefins and vinyl heterocyclic compounds; and in aqueous media acrylic, methacrylic or itaconic acid.  Specified amides are stearamide, palmitamide, margaramide, nonadecanoamide, arachidamide, heneicosamide, behenamide, oleamide, erucamide, elaidamide, ricinoleamide and chaulmoogramide. The compositions may be applied to films, e.g. of regenerated cellulose from aqueous or organic solvent media, e.g. aliphatic and alicyclic ketones and cyclic ethers. Examples describe coating compositions comprising mica, vinylidene chloride/acrylonitrile copolymers and (1 to 5) stearamide, itaconic acid, methyl ethylketone and toluene; (6) lauramide, tetrahydrofuran and toluene; (7) lauramide; (8) stearamide; (10) to (12) behenamide; (13) oleamide and (14) erucamide; and comprising (9) mica, a vinylidene chloride/methyl acrylate/itaconic acid copolymer, stearamide and water. Specifications 525,048 and 654,342 are referred to.ALSO:Regenerated cellulose film may be coated with compositions comprising a vinylidene chloride copolymer containing 80-97% of vinylidene chloride, 0,5-5% of an aliphatic monocarboxylic acid amide derived from a water-insoluble acid and having 12-22 carbon atoms in the molecule, and dispersed throughout the copolymer and amide 0,2-5% of mica particles having their largest dimension between 5 and 70 microns, all the proportions being by weight of the copolymer.  The compositions may be applied from aqueous or organic solvent media to regenerated cellulose film which preferably contains a softener, e.g. propylene glycol, ethylene glycol, glycerine, urea, trimethylene glycol, triethylene glycol, 1,2-butanediol, 1,3-butanediol, 2,3-butanediol, 1,4-butanediol, hexamethylene glycol, ethanolamine, diethanolamine, triethanolamine or calcium chloride; and an acid curing anchoring resin, e.g. urea/formaldehyde, guanidine/urea/formaldehyde, melamine/formaldehyde, melamine/formaldehyde/polyalkylene polyamine and polyalkyleneimine resins.  Examples describe the coating of regenerated cellulose films containing melamine/formaldehyde/polyalkylene polyamine resins and (1 and 3-5) propylene glycol and glycerine, and (2) propylene glycol with compositions comprising mica, vinylidene chloride/acrylonitrile copolymers, stearamide, itaconic acid, p  methyl ethyl ketone and toluene; and regenerated cellulose films containing propylene glycol and anchoring resin with compositions comprising mica, vinylidene chloride/acrylonitrile copolymers, and (6 and 7) lauramide, (8) stearamide, (10-12) behenamide, (13) oleamide, and (14) erucamide; and with a composition comprising (9) mica, a vinylidene chloride/methyl acrylate/itaconic acid copolymer and stearamide. Specifications 525,048 and 654,342 are referred to.