Process for preparing aldehydes

US4299990A · kind A · utility

Assignee

• Ruhrchemie Aktiengesellschaft · DE

Inventors

• Hans Tummes · Oberhausen, DE
• Boy Cornils · Dinslaken, DE
• Heinz O. Noeske · Oberhausen, DE

Key dates

• Filing date: Jun 30, 1980
• Grant date: Nov 10, 1981
• Expiry date: Jun 30, 2000

Classification

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

Abstract

A process is described for preparing aldehyde by hydroformylation of olefins, in which the olefins together with carbon monoxide, hydrogen and paraffins are introduced into a solution of rhodium carbonyl-triphenylphosphine complexes as catalyst and phosphines as solvent, the improvement wherein the gas stream entering the catalyst solution contains 5 to 30% by volume of paraffins with 1 to 5 carbon atoms.