Wholly aromatic mesomorphic polyether ester imide and the preparation thereof

US4762906A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Hisgen · Schifferstadt, DE
• Michael Portugall · Monsheim, DE
• Gerd Blinne · Worms, DE

Key dates

• Filing date: Dec 4, 1986
• Grant date: Aug 9, 1988
• Expiry date: Dec 4, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09K19/3809
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Wholly aromatic mesomorphic polyether ester imides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of PA0 (a) from 5 to 35 mol % of repeat units of the formula I ##STR1## (b) from 5 to 35 mol % of repeat units of the formula II ##STR2## where X is a chemical bond, --O--, --S--, --SO.sub.2 --, --CO--, --Ch.sub.2 -- or .dbd.C(CH.sub.3).sub.2, and n is 0 or 1, PA0 (c) from 15 to 30 mol % of repeat units of the formula III ##STR3## (d) a molar amount corresponding to the total amount of (b) plus (c) minus (a) of repeat units of the formulae IV and/or V ##STR4## (e) repeat units of the formula VI ##STR5## the mole percentages of components a, b, c, d and e adding up to a 100 mol % in each case, PA0 the preparation thereof and fibers, films and molding prepared therefrom.