Toray Industries, Inc.

Keiko Osato

Hideyuki Umetsu

Koji Tachikawa

A liquid crystalline polyester has a specifically high fluidity, a low anisotropy, a high toughness, a low gas property, an excellent heat resistance and a high dielectric breakdown resistance. The liquid crystalline polyester includes 38 to 74 mol % of structural unit(s) obtained from a hydroxycarboxylic acid, 31 to 13 mol % of a structural unit obtained from 4,4'-dihydroxybiphenyl and 31 to 13 mol % of a structural unit obtained from 2,6-naphthalenedicarboxylic acid (100 mol % in total), characterized in that the hydroxycarboxylic acid structural units include a structural unit obtained from 2-hydroxy-6-naphthoic acid in an amount of 89 mol % or more and the average sequence length of the structural unit obtained from 2-hydroxy-6-naphthoic acid is 0.1 to 1.

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Nagoya, Japan

Keiko Osato