POLYCARBONATE RESIN COMPOSITION, AND OPTICAL MATERIAL AND OPTICAL LENS EACH MANUFACTURED USING SAME
申请人:Mitsubishi Gas Chemical Company, Inc.
公开号:EP3138876A1
公开(公告)日:2017-03-08
[Problem] To provide: a polycarbonate resin composition which has a high refractive index and fluidability at a suitable level for molding use, also has low birefringence, and rarely undergoes optical distortion; and an optical material.
[Solution] A polycarbonate resin composition comprising: a polycarbonate resin (A) which has a constitutional unit (a) represented by general formula (4); and a polycarbonate resin (B) which has a constitutional unit (b) represented by general formula (5). (In formula (4), X represents an alkylene group having 1 to 4 carbon atoms.) (In formula (5), R1 and R2 independently represent a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxyl group having 1 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, a cycloalkoxyl group having 5 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or an aryloxy group having 6 to 20 carbon atoms; and Y represents an alkylene group having 1 to 4 carbon atoms.)
[问题]提供一种聚碳酸酯树脂组合物,该组合物具有高折射率和流动性,适合模塑使用,同时具有低双折射,并且很少发生光学畸变;以及一种光学材料。
[解决方案] 一种聚碳酸酯树脂组合物,包括:具有通式(4)表示的组成单元(a)的聚碳酸酯树脂 (A);以及具有通式(5)表示的组成单元(b)的聚碳酸酯树脂(B)。式(4)中,X 代表具有 1 至 4 个碳原子的亚烷基。(在式(5)中,R1 和 R2 分别代表氢原子、具有 1 至 20 个碳原子的烷基、具有 1 至 20 个碳原子的烷氧基、具有 5 至 20 个碳原子的环烷基、具有 5 至 20 个碳原子的环烷氧基、具有 6 至 20 个碳原子的芳基或具有 6 至 20 个碳原子的芳氧基;Y 代表具有 1 至 4 个碳原子的亚烷基)。