Process for the production of aryl carbonates

US5527942A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Pieter Ooms · Krefeld, DE
• Norbert Schon · Krefeld, DE
• Hans-Josef Buysch · Krefeld, DE

Key dates

• Filing date: Sep 15, 1994
• Grant date: Jun 18, 1996
• Expiry date: Sep 15, 2014

Classification

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

Abstract

Carbonates with aromatic ester groups can be produced by reaction of aromatic monohydroxy compounds with phosgene or with chloroformic acid esters of aromatic monohydroxy compounds, working at a temperature in the range of 50.degree. to 350.degree. C. in presence of oxides of the metals of Group IV B of the Mendeleeff periodic table as heterogeneous catalysts.