Wholly aromatic mesomorphic polyester amides and the preparation thereof
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United States of America Patent
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Feb 2, 1988
Grant Date -
N/A
app pub date -
Dec 4, 1986
filing date -
Dec 4, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Wholly aromatic mesomorphic polyester amides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of (a) from 3 to 30 mol % of repeat units of the formula ##STR1## (b) from 3 to 25 mol % of one or more of the repeat units of the formulae II, III and IV ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b) of repeat units of the formulae V and/or VI ##STR3## (d) repeat units of the formula VII ##STR4## (e) if desired from 5 to 25 mol % of repeat units of the formula VIII ##STR5## the mole percentages of components (a), (b), (c), (d) and (e) adding up to 100 mol % in each case, and the preparation and use thereof.
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