Method for the production of aldehydes

US6995293B2 · kind B2 · utility

Assignee

• CELANESE CHEMICALS EUROPE GMBH · DE

Inventors

• Hans Bohnen · Niedernhausen, DE
• Jurgen Herwig
• Dietmar Hoff · Altrip, DE
• Peter Wasserscheid · Cologne, DE
• Roy Hal · Schinveld, NL

Key dates

• Filing date: Sep 3, 2003
• Grant date: Feb 7, 2006
• Expiry date: Nov 13, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/50
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to a hydroformylation method by conversion of olefins or olefinically unsaturated compounds in the presence of at least one rhodium compound and in the presence of sulfonated arylphosphines in ionic liquids, which are based on a quaternary singly-charged ammonium ion or the equivalent of a multiply charged ammonium ion and organic sulfonates or sulfates.