| 摘要 |
An aromatic vinyl resin composition which is transparent and has impact resistance. It is an impact-resistant thermoplastic resin composition comprising (A) 5 to 50 parts by weight of a graft copolymer and (B) 95 to 50 parts by weight of a thermoplastic resin comprising an aromatic vinyl polymer having a syndiotactic structure, wherein the graft copolymer (A) is one obtained by polymerizing 60 to 15 wt % monomer mixture (d) comprising 20 to 100 wt. % aromatic vinyl monomer in the presence of 40 to 85 wt. % latex-form rubber particles (c) having an average particle diameter of 3,000 to 20,000 Å obtained by aggregating and enlarging latex-form rubber particles (a) having an average particle diameter of 3,000 Å or smaller by adding thereto 0.1 to 15 parts by weight (on solid basis) of an acid-group-containing copolymer latex (b) obtained by polymerizing a monomer mixture comprising 5 to 25 wt % unsaturated carboxylic acid and 95 to 75 wt. % monomer copolymerizable with the unsaturated carboxylic acid, per 100 parts by weight (on solid basis) of the particles (a).
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