Title:
液晶性ポリエステルおよびその製造方法
Document Type and Number:
Japanese Patent JP5560714
Kind Code:
B2
Abstract:
Provided is a liquid crystalline polyester which 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. A liquid crystalline polyester comprising 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 comprise 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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Inventors:
Keiko Osato
Koji Tachikawa
Hideyuki Umezu
Koji Tachikawa
Hideyuki Umezu
Application Number:
JP2009539560A
Publication Date:
July 30, 2014
Filing Date:
August 11, 2009
Export Citation:
Assignee:
TORAY INDUSTRIES,INC.
International Classes:
C08G63/60; C08G63/78; C08K3/00; C08L67/00
Domestic Patent References:
| JP2008088387A | 2008-04-17 |