Wholly aromatic mesomorphic polyester amide imides and the preparation thereof

Abstract

Abstract Wholly aromatic mesomorphic polyester amide imides which form a liquid-crystalline fiber-forming melt below 320° C. and are composed of (a) from 5 to 35 mol % of repeat units of the formula I and/or II ##STR1## where X can be identical or different, each X being --O--, --S--, --SO 2 --, --CO--, --CH 2 -- or ═C(CH 3 ) 2 , and n is 0 or 1 (b) from 0 to 30 mol % of repeat units of the formulae III and/or IV ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b) of one or more of the repeat units V, VI, VII, VIII, IX or X in an amount of (c1) from 3 to 35 mol % of units of the formula V ##STR3## (c2) from 0 to 10 mol % of units of the formula VI ##STR4## (c3) from 2 to 25 mol % of units of the formula VII ##STR5## (c4) from 2 to 20 mol % of units of the formula VIII ##STR6## (c5) from 0 to 20 mol % of the units of the formula IX ##STR7## (c6) from 2 to 20 mol % of units of the formula X ##STR8## the total of the mole percentages of components (c1), (c2), (c3), (c4), (c5) and (c6) equalling in each case the total of the mole percentages of components (a) and (b); (d) not less than 10 mol % of repeat units of the formula XI ##STR9## (e) from 0 to 25 mol % of one or more of the repeat units of the formula XII, XIII or XIV ##STR10## the mole percentages of components (a), (b), (c), (d) and (e) adding up to 100 mol % in each case, the preparation thereof and fibers, films and moldings prepared therefrom.

Inventors

• 👤 Bernd Hisgen
• 👤 Hans-Jakob Kock

Bibliographic Details