Thermotropic polyesters, a process for their production and their use for the production of moldings, filaments and films

US4985532A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Ralf Pakull · Krefeld, DE
• Dieter Freitag · Krefeld, DE
• Volker Eckhardt · Walsrode, DE
• Karsten-Josef Idel · Krefeld, DE
• Uwe Westeppe · Mettmann, DE

Key dates

• Filing date: Dec 11, 1989
• Grant date: Jan 15, 1991
• Expiry date: Dec 11, 2009

Classification

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

Abstract

The new thermotropic polyesters containing recurring structural units corresponding to the following formulae ##STR1## show excellent mechanical properties and good processibility. They may be used in the usual way for the production of moldings, filaments, fibers and films.