Working up of hydroformylation or carbonylation reaction mixtures

US4568653A · kind A · utility

Assignee

• BASF SE

Inventors

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

Key dates

• Filing date: Jan 6, 1981
• Grant date: Feb 4, 1986
• Expiry date: Jan 6, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/78
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Reaction mixtures which are obtained on hydroformylation or carbonylation of olefinically unsaturated compounds and which contain dissolved non-volatile complex compounds of metals of group VIII of the periodic table are worked up by a method wherein the products, after distillative removal of low-boiling constituents alone, or of these constituents plus a part of the high-boiling residue, or a part of the high-boiling residue after distillative removal of the desired products, are or is extracted with carbon dioxide, a C.sub.2 -C.sub.4 -paraffin, a C.sub.2 -C.sub.4 -olefin or a normally gaseous halohydrocarbon at above the critical temperature and above the critical pressure of these (extractant) compounds.