| 摘要 |
Wholly aromatic mesomorphic polyester amide imides which form a liquid-crystalline fiber-forming melt below 320 DEG C. and are composed of (a) from 5 to 35 mol % of repeat units of the formula I and/or II <IMAGE> I <IMAGE> <IMAGE> II <IMAGE> where X can be identical or different, each X being -O-, -S-, -SO2-, -CO-, -CH2- or =C(CH3)2, and n is 0 or 1 (b) from 0 to 30 mol % of repeat units of the formulae III and/or IV <IMAGE> (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 <IMAGE> V (c2) from 0 to 10 mol % of units of the formula VI <IMAGE> VI (c3) from 2 to 25 mol % of units of the formula VII <IMAGE> VII (c4) from 2 to 20 mol % of units of the formula VIII <IMAGE> VIII (c5) from 0 to 20 mol % of the units of the formula IX <IMAGE> IX (c6) from 2 to 20 mol % of units of the formula X <IMAGE> X 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 <IMAGE> XI (e) from 0 to 25 mol % of one or more of the repeat units of the formula XII, XIII or XIV <IMAGE>,1 HNcff/135 OXIVC+RE 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.
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