Polycarbonate resin composition for optical parts and molded article containing same

Abstract

To provide a polycarbonate resin that is excellent in light transmittance and color tone even when molded at high temperatures without losing the inherent properties of polycarbonate resins such as heat resistance and mechanical strength, and is also excellent in hydrolysis resistance. A polycarbonate resin composition for optical parts and a molded article composed thereof. A kind of polycarbonate resin composition for optical parts, it is characterized in that, for containing polycarbonate resin (A), polyether derivative (B), except bis(2,4-di-tert-butyl-4-methyl A polycarbonate resin composition for optical parts comprising a phosphite compound (C) other than phenyl) pentaerythritol diphosphite and an epoxy compound (D), relative to 100 mass of polycarbonate resin (A) parts, the polyether derivative (B) is 0.1-2.0 parts by mass, the phosphite compound (C) is 0.01-0.5 parts by mass, and the epoxy compound (D) is 0.001-0.2 parts by mass.

Description

technical field [0001] The present invention relates to a polycarbonate resin composition for optical parts having good color tone and brightness and excellent hydrolysis resistance without losing heat resistance, mechanical strength, etc., which are inherent properties of polycarbonate resin, and a polycarbonate resin composition containing the same Formed products. Background technique [0002] For example, as disclosed in Patent Document 1, a planar light source device incorporated into a liquid crystal display device includes a light guide plate as an optical component. [0003] Conventionally, polymethyl methacrylate (hereinafter referred to as PMMA) has been used as a material for the light guide plate. However, due to its high heat resistance and high mechanical strength, the replacement of PMMA to polycarbonate resin is being promoted. [0004] Compared with PMMA, polycarbonate resin has excellent mechanical properties, thermal properties, and electrical properties,...

AI Technical Summary

Problems solved by technology

[0006] However, the resin compositions disclosed in Patent Documents 2 to 6 cannot fully meet the requirements as materials for light guide plates in recent years (even if they are exposed to high temperature and high humidity conditions for a long time, the cumulative transmittance decreases, the color tone changes little, and the long-term reliability is high. )

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