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1. (WO2017038580) THERMOPLASTIC POLYESTER RESIN COMPOSITION AND LIGHT REFLECTOR USING SAME

Pub. No.:    WO/2017/038580    International Application No.:    PCT/JP2016/074662
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Thu Aug 25 01:59:59 CEST 2016
IPC: C08L 67/02
C08K 3/26
C08K 9/00
C08K 13/06
C08L 25/08
G02B 5/08
Applicants: TOYOBO CO., LTD.
東洋紡株式会社
Inventors: YASUI, Junichi
安井 淳一
HORIGUCHI, Satoru
堀口 悟
SHIMOHARAI, Takuya
下拂 卓也
Title: THERMOPLASTIC POLYESTER RESIN COMPOSITION AND LIGHT REFLECTOR USING SAME
Abstract:
The present invention is a thermoplastic polyester resin composition which is suitable for forming a light-reflecting surface of a light reflector, can provide a molded article having excellent surface smoothness and low fogging properties, and can also suppress mold staining during continuous molding. This thermoplastic polyester resin composition contains 100-50 parts by mass of a poly(butylene terephthalate) resin (A) and 0-50 parts by mass of a poly(ethylene terephthalate) resin (B), and contains 1-20 parts by mass of a surface treated calcium carbonate (C) having an average particle diameter of 0.05-2 µm and 0.05-3 parts by mass of a polyfunctional glycidyl group-containing styrene-based polymer (D) relative to a total of 100 parts by mass of the polyester resins contained in the resin composition.