PROCESSING AID FOR FOAM MOLDING, A VINYL CHLORIDE RESIN-BASED FOAM MOLDING COMPOSITION COMPRISING THE SAME AND A FOAM MOLDED PRODUCT

摘要

A processing aid for foam molding comprising a copolymer obtained by the polymerization of 30 to 90% by weight of methyl methacrylate, 10 to 70% by weight total of one or more monomers selected from the group consisting of butyl methacrylate (BMA), pentyl methacrylate (PMA) and hexyl methacrylate (HMA), and 0 to 20% by weight of other copolymerizable monomers, the copolymer having a reduced viscosity measured according to ASTM D2857 at 1 mg/mL in chloroform at 25° C. of greater than 8 dL/g is provided.