Molten, catalytic process for the preparation of polycarbonates

US5314985A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Steffen Kuhling · Meerbusch, DE
• Wolfgang Alewelt · Krefeld, DE
• Hermann Kauth · Krefeld, DE
• Dieter Freitag · Krefeld, DE

Key dates

• Filing date: May 24, 1993
• Grant date: May 24, 1994
• Expiry date: May 24, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G64/307
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The object of the present invention is to provide a process for the preparation of aromatic polycarbonates in the molten state using fluoride catalysts.