Process for the production of polycarbonates

US5384389A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

• Filing date: Nov 19, 1993
• Grant date: Jan 24, 1995
• Expiry date: Nov 19, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G64/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the production of polycarbonates is disclosed. Accordingly, oligocarbonate in the melt is passed through a heated tube and inert gas is simultaneously introduced by injecting to the melt.