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1. (WO2018008612) WHOLLY AROMATIC LIQUID CRYSTAL POLYESTER RESIN, MOLDED ARTICLE, AND ELECTRICAL/ELECTRONIC COMPONENT

Pub. No.:    WO/2018/008612    International Application No.:    PCT/JP2017/024405
Publication Date: Fri Jan 12 00:59:59 CET 2018 International Filing Date: Tue Jul 04 01:59:59 CEST 2017
IPC: C08G 63/60
H01B 3/42
H01B 17/56
Applicants: JXTG NIPPON OIL & ENERGY CORPORATION
JXTGエネルギー株式会社
Inventors: WASHINO Gosuke
鷲野 豪介
Title: WHOLLY AROMATIC LIQUID CRYSTAL POLYESTER RESIN, MOLDED ARTICLE, AND ELECTRICAL/ELECTRONIC COMPONENT
Abstract:
[Problem] To provide a wholly aromatic liquid crystal polyester resin that exhibits excellent heat resistance while having an extremely low dielectric loss tangent. [Solution] This wholly aromatic liquid crystal polyester resin is characterized by containing constituent units (I) derived from 6-hydroxy-2-naphthoic acid, constituent units (II) derived from an aromatic diol compound, and constituent units (III) derived from an aromatic dicarboxylic acid compound, with the constituent units (III) containing constituent units (IIIA) derived from terephthalic acid and further containing at least one type selected from among constituent units (IIIB) derived from 2,6-naphthalenedicarboxylic acid and constituent units (IIIC) derived from isophthalic acid, and with the compositional ratios of the constituent units satisfying the following conditions: 40 mol.% ≤ constituent unit (I) ≤ 80 mol.% 10 mol.% ≤ constituent unit (II) ≤ 30 mol.% 3 mol.% ≤ constituent unit (IIIA) ≤ 28 mol.% 0 mol.% ≤ constituent unit (IIIB) ≤ 9 mol.% 0 mol.% ≤ constituent unit (IIIC) < 5 mol.% (However, it is not possible for the quantity of both constituent units (IIIB) and constituent units (IIIC) to be 0 mol.%).