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

摘要

The invention relates to a method for increasing the impact resistance of a polymeric vinyl halide material which comprises: incorporating into a polymeric vinyl halide material a) an impact modifier; and b) alumina hydrate having an average particle size of less than about one micron; in amount which forms a synergistic combination for increasing the impact resistance of said polyvinyl halide material.