Process for the continuous production of aryl carbonates

US5831111A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Pieter Ooms · Krefeld, DE
• Eric Bischof · Baytown, US
• Hans-Josef Buysch · Krefeld, DE
• Steffen Kuhling · Meerbusch, DE
• Gottfried Zaby · Leverkusen, DE
• Wolfgang Jakob · Moers, DE
• Jurgen Dahmer · Krefeld, DE
• Norbert Schon · Krefeld, DE

Key dates

• Filing date: May 5, 1997
• Grant date: Nov 3, 1998
• Expiry date: May 5, 2017

Classification

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

Abstract

The present invention relates to a process for the continuous production of carbonates having aromatic ester groups by reacting aromatic hydroxy compounds with phosgene in the gas phase in the presence of heterogeneous catalysts.