| 摘要 |
PROBLEM TO BE SOLVED: To obtain a transparent resin molding for high-temperature and high- humidity environment, having slight change in transparency when exposed to a high-temperature and high-humidity environment. SOLUTION: The resin molding for a high-temperature and high-humidity environment comprises a rubber-reinforced styrene-based resin which is constituted of a rubber-like polymer and an aromatic vinyl-based monomer or the aromatic vinyl-based monomer and another copolymerizable vinyl-based monomer, characterized in that (1) the weight-average particle diameter of the rubber-like polymer is 0.05-0.20μm and (2) the difference in refractive index between an acetone-insoluble part and an acetone-soluble part in the resin is <0.02. COPYRIGHT: (C)2004,JPO |
