Patent GB-467402-A (GB)
Title: Improvements in or relating to the manufacture and use of interpolymers of methacrylic acid amide
IPC: C08F20/56
Filed: 1935-11-11
Abstract: Methacrylamide is polymerized together with one or more other polymerizable compounds, such as vinyl compounds, e.g. vinyl chloride, vinyl acetate, styrene; acrylic compounds, e.g. methyl, ethyl, butyl and amyl acrylates, acrylic nitrile; and methacrylic compounds, e.g. methyl methacrylate.  The polymerization may be carried out by heat or light, with or without oxygen-evolving catalysts, e.g. benzoyl peroxide, hydrogen peroxide, and diluents or solvents may be present.  There may be added to the interpolymers softening agents, e.g. glycerine, acetins, phthalic and adipic esters; drying or non-drying oils, fats, waxes, fatty acids; cellulose compounds, e.g. ethers and esters; natural or synthetic resins, e.g. phenol-, urea-, and p-toluene-sulphonamidealdehyde condensation products; and rubber, e.g. as latex.  To water-soluble interpolymers there may be added gelatine, glue, starch; polyvinyl alcohol, polyacrylic acid, polymethacrylic acid and their esters. The interpolymers may be used for glass substitutes and interlayers for safety glass; moulded, cut, and turned articles; lacquers; textile assistants, e.g. for dressing and impregnating; thickening agents, e.g. for dyes; protective colloids for latex; gelatine substitutes, e.g. as films for printing and photographic purposes; insulation and cable casings; adhesives; gasimpermeable material, e.g. for gas-masks; dental and medicinal articles, e.g. palates, plaster; artificial leather; artificial silk; gramophone records. Films of the interpolymers may be used alone; applied to other films especially those non-permeable to water, e.g. of cellulose esters, particularly celluloid, of polyvinyl esters, polystyrene, polyacrylic esters, polymethacrylic esters, or of corresponding interpolymers or mixtures of polymers, or be coated on both sides, e.g. with polyacrylic esters for use as interlayers.  In examples, methacrylamide is polymerized in the presence of benzoyl peroxide with (1), (2) butyl acrylate in presence of ethyl, propyl, or butyl alcohol, or ketones, e.g. acetone, methyl ethyl ketone; (3), methyl methacrylate.  Specification 467,492 is referred to.ALSO:Protective colloids for latex are prepared by polymerizing methacrylamide together with one or more other polymerizable compounds, such as vinyl compounds, e.g. vinyl chloride, vinyl acetate, styrene; acrylic compounds, e.g. methyl, ethyl, butyl and amyl acrylates, acrylic nitrile; and methacrylic compounds, e.g. methyl methacrylate.  The polymerization may be carried out by heat or light, with or without oxygen-evolving catalysts, e.g. benzyl peroxide, hydrogen peroxide, and diluents or solvents may be present.  There may be added to the interpolymers softening agents, e.g. glycerine, acetins, phthalic and adipic esters; drying or non-drying oils, fats, waxes, fatty acids; cellulose compounds, e.g. ethers and esters; natural or synthetic resins, e.g. phenolurea-, and p-toluene-sulphonamide-aldehyde condensation products; and rubber, e.g. as latex.  To water-soluble interpolymers there may be added gelatine, glue, starch, polyvinyl alcohol, polyacrylic acid, polymethacrylic acid and their esters. Specification 467,492 is referred to.