Copolymers of unsaturated glycidyl esters with polyepoxide solvent, and heat curing the resulting solution

Claim 1

A PROCESS FOR THE PREPARATION OF A GLYCIDYL ESTER COPOLYMER SOLUTION DEVOID OF SOLVENT BOILING BELOW 150* C. AND CAPABLE OF BEING READILY CURED WHICH COMPRISES POLYMERIZING, AT A TEMPERATURE OF FROM 60*C. TO ABOUT 150*C., A SOLUTION COMPRISING (A) 5-95 WEIGHT PERCENT OF AN UNSATURATED GLYCIDYL ESTER MONOMER SELECTED FROM AT LEAST ONE MEMBER OF THE GROUP CONSISTING OF GLYCIDYL ACRYLATE, GLYCIDYL METHACRYLATE, GLYCIDYL CROTONATE, GLYCIDYL MALEATE, GLYCIDYL FUMARATE, AND GLYCIDYL ITACONATE, (B) 95-5 WEIGHT PERCENT OF A DIFFERENT MONOETHYLENICALLY UNSATURATED MONOMER, FREE OF SUBSTITUENTS REACTIVE WITH 1,2-EPOXY GROUPS, COPOLYMERIZABLE WITH SAID (A), AND (C) AS THE SOLE POLYMERIZATION SOLVENT, AN EPOXIDE COMPOUND, SAID (C) (1) BEING A SOLVENT FOR AND NON-REACTIVE WITH SAID (A), SAID (B) AND SAID GLYCIDYL ESTER COPOLYMER UNDER THE POLYMERIZATION CONDITIONS USED, (2) BEING PRESENT IN AN AMOUNT SUFFICIENT TO DISSOLVE SAID (A), SAID (B) AND SAID GLYCIDYL ESTER COPOLYMER, (3) HAVING AT LEAST ONE 1,2-EPOXY GROUP, (4) BEING FREE OF ETHYLENIC UNSATURATION CAPABLE OF POLYMERIZATION WITH THE UNSATURATED GROUPS IN SAID (A) AND SAID (B) UNDER THE POLYMERIZATION CONDITIONS USED, (5) HAVING A MELTING POINT BELOW THE POLYMERIZATION TEMPERATURE, (6) HAVING A BOILING POINT OF AT LEAST 150*C., (7) HAVING A VISCOSITY NOT EXCEEDING 130 CENTIPOISES AT THE POLYMERIZATION TEMPERATURE, AND (8) BEING CAPABLE OF ENTERING THE CURING REACTION WHEN SAID GLYCIDYL ESTER COPOLYMER IS CURED.