Wholly aromatic mesomorphic polyester amides and the preparation thereof

US4722993A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Hisgen · Schifferstadt, DE
• Michael Portugall · Monsheim, DE
• Hans-Josef Sterzel · Schifferstadt, DE

Key dates

• Filing date: Dec 4, 1986
• Grant date: Feb 2, 1988
• Expiry date: Dec 4, 2006

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G69/32
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Wholly aromatic mesomorphic polyester amides which form a liquid-crystalline fiber-forming melt below 320.degree. C. and are composed of PA0 (a) from 3 to 30 mol % of repeat units of the formula ##STR1## (b) from 3 to 25 mol % of one or more of the repeat units of the formulae II, III and IV ##STR2## (c) a molar amount corresponding to the total amount of components (a) and (b) of repeat units of the formulae V and/or VI ##STR3## (d) repeat units of the formula VII ##STR4## (e) if desired from 5 to 25 mol % of repeat units of the formula VIII ##STR5## the mole percentages of components (a), (b), (c), (d) and (e) adding up to 100 mol % in each case, and the preparation and use thereof.