Liquid-crystal polyester resin
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United States of America Patent
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Issued Date -
Jan 11, 2007
app pub date -
Sep 29, 2004
filing date -
Oct 2, 2003
priority date (Note) -
Abandoned
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Abstract
The present invention provides a liquid-crystalline polyester resin, essentially consisting of the repeating units represented by formulae [I]-[IV]: wherein p, q, r and s satisfy the following formulae: 0.4.ltoreq.p/q.ltoreq.2.0, 2.ltoreq.r.ltoreq.15, 2.ltoreq.s.ltoreq.15, and p+q+r+s=100, provided that the liquid-crystalline polyester resin has a melting point of 190-250.degree. C. determined by differential scanning calorimetry. The liquid-crystalline polyester resin of the present invention exhibits a good molding processability at low temperatures and excellent mechanical properties.
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