RESIN COMPOSITIONS HAVING IMPROVED IMPROVED RESISTANCE CONTAINING THERMOPLASTIC POLYMER, SHOCK COPOLYMER-TYPE SHOCK ADDITIVE, AND POSSIBLY OTHER ADDITIVES, AND CORRESPONDING GRAFT COPOLYMER, HARD ADDITIVE CHARACTER

摘要

RESIN COMPOSITIONS CONTAINING A THERMO-PLASTIC POLYMER, IN PARTICULAR PVC OR A COPOLYMER WITH A MAIN CONTENT OF VINYL CHLORIDE, A SHOCK ADDITIVE OF THE GRAFT COPOLYMER TYPE, AND POSSIBLY OTHER ADDANTS. /P P COPOLYMER CONSISTS OF A TRUNK CONSISTING OF A STATISTICAL COPOLYMER OF BUTADIENE OR ISOPRENE, OF AN ACRYLATE OF CAC ALCOYL AND POSSIBLY OF A POLYFUNCTIONAL CROSSLINKING AGENT, ON WHICH ARE CHAINS OF A STATISTIC COPOLYMER METHACRYLATE OF A CAC ALCOYL, PARTICULARLY METHYL METHACRYLATE, AND OF AN ACRYLATE OF CAC ALCOYL, PARTICULARLY ETHYL ACRYLATE. THE TRUNK OF THE ADDITIVE SHOCK COPOLYMER SHOCK CONTAINS BY WEIGHT 0.5 TO 35 OF BUTADIENE OR ISOPRENE AND NOT MORE THAN 10 MOLAR OF THE CROSSLINKING AGENT, WHILE THE CHAINS GRAFTED OF SAID COPOLYMER GRAFTS CONTAIN 5 TO 50 MOLAR OF ACRYLATE D 'AN ALCOYL IN CAC AND WHICH THE PONDERAL CHAINS RAFFEESTRONC RATIO CAN RANGE FROM 10 TO 200. /P P THE COMPOSITIONS OF RESINS PRODUCED ARE USEFUL IN APPLICATIONS FOR WHICH WE LOOK FOR IMPROVED SHOCK RESISTANCE AT AMBIENT TEMPERATURE, COLD OR STILL AFTER AGING.