| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a thermoplastic resin composition which is excellent in impact resistance and surface hardness and prevents deterioration of colorability or molding appearance due to the occurrence of white mist or white streaks. <P>SOLUTION: The thermoplastic resin composition contains a copolymer (A) obtained by polymerizing vinyl monomers (b1) containing an aromatic vinyl compound, a vinyl cyanide compound, and a (meth)acrylate ester compound in predetermined ratios in the presence of a rubbery polymer (a) having a volume mean particle diameter of 215-335 nm and having a gel content of 80-93%, styrene-acrylonitrile (B) with a predetermined copolymerization ratio, and a polymethyl methacrylate resin (C), wherein an intrinsic viscosity [η] (measured at 30°C in methyl ethyl ketone) of an acetone-soluble part of the copolymer (A) is 0.35-0.5 dl/g, a graft rate of the copolymer (A) is 45-85 mass%, a ratio of (A)/(B)/(C) is 3 to 70/3 to 70/3 to 70 (by mass ratio), and the total light transmittance of a resin molding having a thickness of 2.4 mm is 70% or more. <P>COPYRIGHT: (C)2013,JPO&INPIT |
