NATURAL RUBBER-CONTAINING THERMOPLASTIC RESIN COMPOSITION AND MOLDED ARTICLE THEREOF

摘要

A natural rubber-containing thermoplastic resin composition includes a graft copolymer (A) obtained by graft-polymerizing a vinyl monomer mixture (a) including at least an aromatic vinyl monomer to a rubbery polymer (R) composed of 10 to 70% by mass of a natural rubber having a weight average particle size of 0.3 to 1.2 μm and 30 to 90% by mass of a synthetic rubber having a weight-average particle size of 0.2 to 0.4 μm, wherein particles of the natural rubber include not less than 5% by mass of natural rubber articles with a size of 1.0 μm or larger; and particles of the rubbery polymer (R) with a size of 1.0 μm or larger have an internal graft ratio of 20% or higher.