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1. (WO2018139206) POLYCARBONATE RESIN COMPOSITION FOR OPTICAL PARTS AND OPTICAL PART

Pub. No.:    WO/2018/139206    International Application No.:    PCT/JP2018/000555
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Sat Jan 13 00:59:59 CET 2018
IPC: C08L 69/00
C08K 3/32
C08K 5/1515
C08K 5/49
C08L 63/00
C08L 71/02
G02B 1/04
Applicants: MITSUBISHI ENGINEERING-PLASTICS CORPORATION
三菱エンジニアリングプラスチックス株式会社
Inventors: TOMITA, Keisuke
冨田 恵介
Title: POLYCARBONATE RESIN COMPOSITION FOR OPTICAL PARTS AND OPTICAL PART
Abstract:
The present invention is a polycarbonate resin composition for optical parts and an optical part, which have a good hue and very little gas generation and mold contamination during molding. The polycarbonate resin composition for optical parts is characterized in containing, with respect to 100 parts by mass of a polycarbonate resin (A): 0.1-4 parts by mass of a polyalkylene glycol (B) that has a weight average molecular weight (Mw), measured in a tetrahydrofuran solvent by gel permeation chromatography and calculated as polystyrene, of greater than 4,000-7,700 and has a ratio (Mw/Mn) of the weight average molecular weight (Mw) to the number average molecular weight (Mn) of 2.5 or less; and 0.005-0.5 parts by mass of a phosphorus stabilizing agent (C).