US Patent 6984712 Liquid-crystal polyester resin
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Patent abstract
The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.
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Patent Inventor Names
Hiroyuki Kato0
Kazunori Ueda0
Kiichi Kometani0
Masaya Kitayama0
Ryuzo Ueno0
Date of Patent
January 10, 2006
0Patent Application Number
104964900
Date Filed
November 25, 2002
0Patent Primary Examiner
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US Patent 6984712 Liquid-crystal polyester resin
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