| 摘要 |
PURPOSE:To obtain a thermoplastic resin composition which is excellent in transparency and heat, impact and oil resistances and can be inexpensively supplied, by mixing a specified graft copolymer with a matrix polymer. CONSTITUTION:A resin composition comprising 5-50wt% (A) graft copolymer obtained by graft-polymerizing an aromatic vinyl compound and an alkyl methacrylate with a rubber comprising polybutadiene or a butadiene copolymer containing at least 60wt% butadiene units and 95-50wt% (B) matrix polymer which comprises 20-89.5wt% methyl methacrylate units, 5-74.5wt% six-membered ring acid anhydride units of the formula (wherein R1 and R2 are each methyl or H), 5-69.5wt% aromatic vinyl compound units, and 0.5-20wt% (meth)acrylic acid units and which has a viscosity as measured in a 10wt% MEK solution at 25 deg.C of 3-20cP. The refractive index of the copolymer A should be equal to that of polymer B.
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