General Electric Company

Chemtura Corporation

Larry B Simmons

Seldon L Dotson

George P McCarty

A clear, impact modified, heat resistant polyvinyl chloride composition is provided comprising (a) at least one polyvinyl halide; (b) at least one clear impact modifier possessing a refractive index which is not more than about 2% above or below the refractive index of the polyvinyl halide; and (c) at least one clear heat modifier comprising a terpolymer obtained by the copolymerization of a vinyl aromatic monomer, an acrylonitrile and an alkyl acrylate or alkyl methacrylate, wherein the terpolymer possesses a refractive index which is not more than about 2% above or below the refractive index of the polyvinyl halide and possesses a weight average molecular weight ranging from about 75,000 to about 400,000.

Clear, impact modified, heat resistant polyvinyl halide compositions

Blends of ABS polymers with different substrate particle sizes are disclosed having a desirable balance of impact resistance, crease stress whitening, and melt viscosity. These compositions are useful in thin guage ABS films.

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Washington, WV, United States of America

Larry B Simmons