Process for the preparation of diaryl carbonates or arylalkyl carbonates from dialkyl carbonates

US8003817B2 · kind B2 · utility

Assignee

• Bayer MaterialScience AG · DE

Inventors

• Andre Düx · Bogen, DE
• Pieter Ooms · Krefeld, DE
• Johann Rechner · Krefeld, DE
• Kaspar Hallenberger · Leverkusen, DE
• Georg Ronge · Mülheim an der Ruhr, DE
• Johan Vanden Eynde · Zwijnaarde, BE

Key dates

• Filing date: May 16, 2008
• Grant date: Aug 23, 2011
• Expiry date: Mar 15, 2029

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

The invention provides a process for the preparation of diaryl carbonates and/or alkylaryl carbonates from dialkyl carbonates and aromatic hydroxy compounds using one or more intermediate condensers for improving heat integration.