Hydroformylation of olefinically unsaturated compounds

US4400549A · kind A · utility

Assignee

• BASF SE

Inventors

• Wolfgang Richter · Haar, DE
• Rudolf Kummer · Bischofswerda, DE
• Kurt Schwirten · Ludwigshafen, DE

Key dates

• Filing date: Nov 23, 1981
• Grant date: Aug 23, 1983
• Expiry date: Nov 23, 2001

Classification

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

Abstract

A process for hydroformylating olefinically unsaturated compounds by means of rhodium/triphenylphosphine/carbonyl complexes formed in situ from rhodium acetate, triphenylphosphine and carbon monoxide, wherein the hydroformylation reaction is preceded by a starting phase in which the mixture of the hydroformylation medium, the triphenylphosphine and rhodium acetate is heated at from 90.degree. to 120.degree. C. under a CO/H.sub.2 pressure of from 5 to 20 bar and the acetic acid liberated is discharged from the reactor in gaseous form in a stream of CO and H.sub.2, until virtually no more acetic acid can be detected in this gaseous discharge.