Wholly aromatic mesomorphic polyether esters and the preparation thereof

US4797465A · kind A · utility

Assignee

• BASF SE

Inventors

• Michael Portugall · Monsheim, DE
• Gerd Blinne · Worms, DE
• Hans-Josef Sterzel · Schifferstadt, DE

Key dates

• Filing date: Dec 4, 1986
• Grant date: Jan 10, 1989
• Expiry date: Dec 4, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/605
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Wholly aromatic mesomorphic polyesters which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of PA0 (a) not less than 10 mol % of repeat units of the formula I ##STR1## (b) a molar amount equivalent to the total amount of components (c) and (d) of repeat units of the formula II ##STR2## (c) from 3 to 20 mol % of repeat units of the formulae III and/or IV ##STR3## and (d) from 5 to 30 mol % of repeat units of the formula V ##STR4## the molar proportions of components a, b, c and d adding up to 100 mol % in each case, the preparation thereof and moldings and coatings prepared therefrom.