Patent GB-956268-A (GB)
Title: Polymerisable epoxide compositions
Inventor: GAZZARD EDWARD GEORGE
IPC: C08L63/02
Filed: 1960-01-28
Abstract: Linear polyesteramides are added as plasticizer to a composition of: (a) a water-insoluble polymer derived from ethylenically unsaturated monomers and containing carboxylic acid groups (b) a compound containing an average of more than one epoxy group per molecule, (c) a catalyst to activate the epoxy groups and (d) an organic solvent (this last component is optional).  In place of component (a), a water-insoluble polymer derived wholly from ethylenically unsaturated monomers and containing epoxy groups, the epoxy groups not being joined to the main polymer chain via ether linkages, may be used, and in this care component (b) may be omitted. The polymer (a) or its alternative contains 2-15 parts by weight of carboxylic acid or epoxy groups per 100 parts of polymer, 0.6-1.2 equivalents of (b) are used per carboxyl group, or, when the polymer (a) is replaced by the polymeric epoxy compound, not more than 50% by weight of (b) is added, based on the polymer, 0.1-5.0% of catalyst, based on the total weights of epoxides and (a), are used. 1-30% by weight of polyesteramide, based on the other polymer, are added.  Salts of the polymers containing carboxylic groups e.g. with basic catalysts may be used in place of the component (a).  Many components for use in preparing the polyesteramides and other polymers, and several amines as catalysts, are listed.  In the Example 1, methyl methacrylate and methacrylic acid are copolymerized in xylene/butanol using benzoyl peroxide catalyst and TiO2 added, followed by diphenylolpropane di-glycidyl ether, tri (dimethylamino-methyl) phenol or dimethyloctadecyl amines, and a polyesteramide derived from either adipic acid, ethylene glycol, diethylene glycol and monoethanolamine or adipic acid, ethylene glycol and monoethanolamine alone, further xylene and butanol being used as solvent. In Example 2, the copolymer is derived from methyl methacrylate, methacrylic acid, and coconut-palm kernel methacrylate, tri (dimethylaminomethyl) phenol or dimethyloctadecyl amine, and the polyesteramide from polypropylene glycol (Mol. wt. 425), adipic acid and monoethanolamine or from dipropylene glycol, adipic acid and monoethanolamine, the other components of the composition and the procedure being the same as Example 1.  In Example 3, methyl methacrylate and glycidyl acrylate are copolymerized in xylene using azo-bis-isobutyronitrile as catalyst, and TiO2, dimethyllaurylamine, and the first polyesteramide of Example 1 added along with xylene and butanol as solvents, and with methyl laurylamine.  Specifications 809,257, 809,658, 810,940 and 858,757 are referred to.ALSO:Coating compositions contain (a) linear polyesteramide, (b) carboxyl-group-containing polymer of ethylenically unsaturated momoners, (c) compound containing on average more than one epoxy group per molecule, (d) catalyst for activating the epoxy groups, and optionally (e) an organic solvent. Component (b) may be replaced by a polymer derived wholly from ethylenically unsaturated monomers and containing epoxy groups attached to the chain other than by ether linkages, and in this case component (c) may or may not be omitted (see Division C3).  In the examples, metal is coated e.g. by dipping or spraying, with xylenol/butanol solutions of (1) diphenylolpropane diglycidyl ether, methyl methacrylate/methacrylic acid copolymer, tri(dimethylaminomethyl)-phenol or dimethyloctadecylamine, and polyesteramide from adipic acid, ethylene glycol, monoethanolamine with or without diethylene glycol; (2) diphenylolpropane diglycidyl ether, methyl methacrylate/methacrylic acid/coconut palm kernel methacrylate copolymer, tri(dimethylaminomethyl)phenol or dimethyloctadecylamine, and polyesteramide from adipic acid, monoethanolamine, and polypropylene glycol or dipropylene glycol; or (3) methylmethacrylate/glycidyl acrylate copolymer, dimethyllaurylamine, and the first polyesteramide of Example (1). TiO2 is used as pigment in all five coating compositions, and the films are baked.  Specifications 809,257, 809,658, 810,940 and 858,757 are referred to.