| 摘要 |
<p>VINYL CHLORIDE POLYMER COMPOSITION A thermoplastic vinyl chloride polymer composition superior in processing properties is provided. The composition comprises (I) polyvinyl chloride or a copolymer predominantly comprised of vinyl chloride and (II) a methyl methacrylate composite polymer characterized by the combination of component A consisting essentially of, in polymerized form, a predominant amount of methyl methacrylate and a minor amount of acrylic acid ester and, optionally, other copolymerizable unsaturated monomer, and component B consisting essentially of, in polymerized form, methyl methacrylate and, optionally, other copolymerizable unsaturated monomer. The methyl methacrylate composite polymer (II) is either a composite polymer prepared by the sequential emulsion two stage polymerization of two monomer charges of components A and B or a blend polymer of two polymer latexes separately prepared from the monomer charges of components A and B.</p> |
