Vinyl ester resin and process for curing same with ionizing radiation in the presence of amines

Claim 1

A PROCESS FOR CURING A MIXTURE OF A POLYMERIZABLE VINYL ESTER RESIN AND A NONVOLATILE VINYL MONOMER SELECTED FROM THE GROUP CONSISTING OF VINYL CARBOXYLIC ACIDS, VINYL NITRILES, VINYL AMIDES, ALKYL AND HYDROXYALKYL ESTERS OF VINYL CARBOXYLIC ACIDS WHEREIN THE ALKYL GROUP CONTAINS FROM 1 TO 8 CARBONS, AND MIXTURES THEREOF, SAID PROCESS COMPRISES EXPOSING SAID MIXTURE IN AN INERT ATMOSPHERE TO IONIZING RADIATION, SAID MIXTURE HAVING ADDED THERETO ABOUT 2 TO 5 WEIGHT PERCENT BASED ON THE WEIGHT OF THE MIXTURE OF AN AMINE HAVING THE FORMULA R1R2R3N WHERE R1 IS AN ALKYL OR ARALKYL GROUP, R2 IS HYDROGEN AND R3 MAY BE HYDROGEN OR AN ALKYL GROUP OR R1 AND R3 TOGETHER MAY BE A CYCLIC ALKYLENE RADICAL OR AN OXIDIALKYLENE RADICAL; AND WHEREIN SAID VINYL ESTER RESIN IS PREPARED BY REACTING ESSENTIALLY EQUIVALENT AMOUNTS OF A POLYEPOXIDE OF A POLYHYDRIC PHENOL HAVING MORE THAN ONE EPOXIDE GROUP PER MOLECULE WITH AN UNSATURATED ACID HAVING THE FORMULA R1-CH=C(-R2)-COOH WHERE R1 IS CHLORINE, BROMINE, HYDROGEN OR PHENYL AND R2 IS HYDROGEN, CHLORINE, BROMINE OR A LOWERALKYL GROUP OF 1 TO 4 CARBON ATOMS.