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1. (WO2018003233) POLYACETAL RESIN COMPOSITION FOR MOLDING PLATE-SHAPED MOLDED ARTICLE, PLATE-SHAPED MOLDED ARTICLE, AND CARRIER PLATE OF WINDOW REGULATOR

Pub. No.:    WO/2018/003233    International Application No.:    PCT/JP2017/015017
Publication Date: Fri Jan 05 00:59:59 CET 2018 International Filing Date: Thu Apr 13 01:59:59 CEST 2017
IPC: C08L 59/00
B29C 45/00
C08J 5/00
C08K 5/13
B60J 1/17
Applicants: POLYPLASTICS CO., LTD.
ポリプラスチックス株式会社
Inventors: HORIGUCHI, Tadahiro
堀口 忠洋
KOTANI, Sonae
小谷 供
OHI, Kazuki
大井 和樹
Title: POLYACETAL RESIN COMPOSITION FOR MOLDING PLATE-SHAPED MOLDED ARTICLE, PLATE-SHAPED MOLDED ARTICLE, AND CARRIER PLATE OF WINDOW REGULATOR
Abstract:
Provided is a polyacetal resin composition suitable for providing a plate-shaped resin molded article that satisfies all of the following: high flatness, low shrinkage ratio anisotropy (high dimensional stability), high creep resistance, high impact strength, and excellent color stability during residence in the molder. The polyacetal resin composition for molding a plate-shaped molded article according to the present invention comprises: (A) 100 mass parts of a polyacetal resin having a melt index (according to ASTM D1238, 190℃, 2.16 kgf) of 2.0 g/10 min to 4.0 g/10 min; (B) 0.1 mass parts to 2 mass parts of a polyacetal copolymer that is a copolymer of (b1) trioxane, (b2) a compound having two to four cyclic ether units in each molecule, and (b3) a compound having one cyclic ether unit in each molecule, the polyacetal copolymer having a branched or crosslinked structure; and (C) 0.1 mass parts to 1 mass part of a hindered phenol antioxidant.