SMALL PARTICLE SIZE HYDRATED ALUMINA AS AN IMPACT SYNERGIST FOR IMPACT MODIFIED VINYL HALIDE POLYMERS

摘要

ABSTRACTThe invention relates to a method for increasing theimpact resistance of a polymeric vinyl halide material whichcomprises:incorporating into a polymeric vinyl halide materiala) an impact modifier; andb) alumina hydrate having an average particle sizeof less than about one micron;in amount which forms a synergistic combination for increasingthe impact resistance of said polyvinyl halide material.