Impact modifier compositions for rigid PVC compositions of hydrocarbon rubbers and chlorinated polyethylene

摘要

Polyvinyl chloride composition having excellent impact strength are disclosed, wherein this impact resistant composition comprises a vinyl chloride polymer and 2-8 parts of an impact modifier composition comprising at least one ethylene/alpha-olefin copolymer and at least one chlorinated olefin polymer per 100 parts of the vinyl chloride polymer, wherein the impact modifier composition comprises less than 1 part of the ethylene/alpha-olefin copolymer and the ratio of ethylene/alpha-olefin copolymer to the total modifier composition is less than 25%.