Method for producing diaryl carbonate

US9765012B2 · kind B2 · utility

Assignee

• Covestro Deutschland AG · DE

Inventors

• Karl-Heinz Köhler · Aachen, DE
• Henning Kahnis
• Johan Vanden Eynde · Zwijnaarde, BE
• Gabriel Denecker · Kalmthout, BE
• Ricarda Leiberich · Langen, DE
• Kaspar Hallenberger · Leverkusen, DE
• Korbinian Krämer
• Florian Lipski · Mülheim an der Ruhr, DE

Key dates

• Filing date: Dec 17, 2013
• Grant date: Sep 19, 2017
• Expiry date: Feb 5, 2034

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C68/02
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present application relates to a method for the continuous production of diaryl carbonate from phosgene and of at least one monohydroxy compound (monophenol) in the presence of catalysts, and to the use thereof for the production of polycarbonates.