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Title:
LIQUID CRYSTALLINE POLYESTER AND PROCESS FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2011/018837
Kind Code:
A1
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.

Inventors:
OSATO KEIKO (JP)
TACHIKAWA KOJI (JP)
UMETSU HIDEYUKI (JP)
Application Number:
PCT/JP2009/064149
Publication Date:
February 17, 2011
Filing Date:
August 11, 2009
Export Citation:
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Assignee:
TORAY INDUSTRIES (JP)
OSATO KEIKO (JP)
TACHIKAWA KOJI (JP)
UMETSU HIDEYUKI (JP)
International Classes:
C08G63/60; C08G63/78; C08L67/04
Foreign References:
JP2007154169A2007-06-21
JP2009108191A2009-05-21
JPH11322910A1999-11-26
JP2004256656A2004-09-16
JPH0370730A1991-03-26
JPS5610562A1981-02-03
JP2002037869A2002-02-06
JP2004196930A2004-07-15
JP2004244452A2004-09-02
JP2005213418A2005-08-11
JP2007100078A2007-04-19
Other References:
See also references of EP 2465889A4
SUENAGA, IN POLYMER JOURNAL, vol. 25, no. 3, 1993, pages 315
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