| 摘要 |
PROBLEM TO BE SOLVED: To provide a spectacle lens made of polycarbonate resin which not only acquires hue stability and metal mold corrosion suppression effect but also retains the original characteristics of the polycarbonate resin which scarcely turns yellow even in a long-continued hot temperature state during molding a lens by extrusion compression molding or the like, has high-temperature molding heat resistance, and causes little change in the hue even when a thermal history such as re-extrusion is imparted for reuse of a product waste or the like. SOLUTION: The spectacle lens is molded from a polycarbonate resin composition containing: (1) with respect to 100 parts by weight of a polycarbonate resin with a total chlorine amount of 500 ppm or less; (2) 0.003 to 0.2 parts by weight of an epoxy compound, which is a copolymer of styrene and glycidyl methacrylate; (3) 0.05 to 0.5 parts by weight of a fatty acid ester release agent; (4) 0.01 to 0.3 parts by weight of a hindered phenol-based antioxidant; (5) 0.1 to 0.4 parts by weight of an UV stabilizer having a benzotriazole skeleton; and (6) 0.005 to 0.1 part by weight of a phosphorus-based thermal stabilizer. COPYRIGHT: (C)2012,JPO&INPIT |
