Process for the production of aromatic polyether ketones

US4999414A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Joachim Genz · Krefeld, DE
• Erhard Tresper · Krefeld, DE
• Karsten-Josef Idel · Krefeld, DE
• Ludwig Bottenbruch · Krefeld, DE
• Volker Eckhardt · Walsrode, DE

Key dates

• Filing date: Jul 17, 1989
• Grant date: Mar 12, 1991
• Expiry date: Jul 17, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G65/4012
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention relates to a process for the production of crystalline, aromatic polyether ketones in lactams as solvent. The polymers produced have a high molecular weight, high thermal stability, high resistance to the effect of chemicals and good mechanical properties.