Liquid crystalline copoly(ester-imide)s and a process for the preparation thereof
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United States of America Patent
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Dec 1, 1998
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N/A
app pub date -
Dec 23, 1996
filing date -
Jul 1, 1994
priority date (Note) -
Expired
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Abstract
The present invention relates to liquid crystalline copoly(ester-imides) and a process for the preparation thereof. In particular, the invention relates to liquid crystalline copoly(esteri-imides) comprising structural units derived from N-(3'-hydroxyphenyl)-trimellitic acid imide or N-(4'-carboxyphenyl)trimellitic acid imides optionally in combination with aromatic dicarboxylic acids, dioles or hydroxy acids. The invention also concerns the use of these copolymers in polymer blends, in moulded articles, in fibres, filaments and sheets.
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