Wholly aromatic mesomorphic polyester amide imides and the preparation thereof

US4788272A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Hisgen · Schifferstadt, DE
• Michael Portugall · Monsheim, DE
• Rolf Steinberger · Schifferstadt, DE

Key dates

• Filing date: Dec 4, 1986
• Grant date: Nov 29, 1988
• Expiry date: Dec 4, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/3823
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Wholly aromatic mesomorphic polyester amide imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of PA0 (a) from 5 to 35 mole % of repeat units of the formula I and/or II ##STR1## where the Xs in the formulae I and II can be identical or different and each is --O--, --S--, --SO.sub.2 --, --CO--, --CH.sub.2 --or .dbd.C(CH.sub.3).sub.2 and n is 0 or 1, PA0 (b) from 0 to 30 mole % 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 of the formulae V, VI, VII, VIII and IX ##STR3## (d) if desired from 5 to 25 mole % of one or more of the repeat units of the formulae X, XI and XII ##STR4## (e) repeat units of the formula XIII ##STR5## the mole percentages of components (a), (b), (c), (d) and (e) adding up to 100 mole % in each case, the preparation thereof and fibers, films and moldings prepared therefrom.