abstract |
[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.n[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).n(In formula (4), X represents an alkylene group having 1 to 4 carbon atoms.)n(In formula (5), R 1 and R 2 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.) |