Process for impact modification of vinyl halide polymers and impact modifiers and vinyl halide blends produced therewith
Abstract
Abstract A NOVEL GRAFT COPOLYMER IS PREPARED UTILIZING A DIENE RUBBER SUBSTRATE AND TWO DIFFERENT INTERPOLYMERS FORMING A GRAFT SUPERSTRATE. INITIALLY THE DIENE RUBBER IS ADMIXED WITH A POLYMERIZABLE MONOMER FORMULATION CONTAINING A MONOVINYLIDENE AROMATIC HYDROCARBON AND AN ALKYL ALKACRYLATE WHICH IS GRAFTED THEREONTO. THIS GRAFT COPOLYMER IS ADMIXED WITH A SECOND POLYMERIZABLE MONOMER FORMULATION CONTAINING A MONOVINYLIDENE AROMATIC HYDROCARBON AND AN UNSATURATED NITRILE WHICH IS GRAFTED THEREONTO TO FORM A COMPOSITE GRAFT COPOLYMER HAVING A SHELL RICH IN THE NITRILE INTERPOLYMER. BLENDS OF SUCH COMPOSITE GRAFT COPOLYMERS WITH VINYL CHLORIDE POLYMERS HAVING A HIGH DEGREE OF TRANSPARENCY ARE ALSO DISCLOSED.
Inventors
- 👤 Ludwig A Beer
Bibliographic Details
Claims Analysis
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