Solid phase post polymerization condensation of thermotropic polyester imides

US4954606A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Rudolf Dicke · Bestwig, DE
• Joachim Genz · Krefeld, DE
• Volker Eckhardt · Walsrode, DE
• Ludwig Bottenbruch · Krefeld, DE

Key dates

• Filing date: Oct 19, 1988
• Grant date: Sep 4, 1990
• Expiry date: Oct 19, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G73/16
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Thermotropic polyester imides having recurrent units corresponding to the following formulae: ##STR1## have excellent dimensional stability under heat and are suitable for the production of moulded articles, filaments, fibres and films.