Hydroformylation process

US6331656A · kind A · utility

Assignee

• BASF SE

Inventors

• Heinrich-Josef Blankertz · Hamm (Sieg), DE
• Armin Volker Grenacher · Mutterstadt, DE
• Friedrich Sauer · Grünstadt, DE
• Harald Schwahn · Wiesloch, DE
• Willi Schönmann · Schifferstadt, DE
• Michael Roper · Monsheim, DE

Key dates

• Filing date: Mar 4, 1999
• Grant date: Dec 18, 2001
• Expiry date: Mar 4, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/00
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In a process for the hydroformylation of olefins having from 12 to 100 carbon atoms in the presence of a cobalt carbonyl catalyst at pressures of from 100 to 400 bar and at from 100 to 200.degree. C., depressurization and recovery of the cobalt catalyst by extraction with an aqueous acid solution in the presence of atmospheric oxygen, PA0 (a) the extraction is carried out in the presence of a polymeric emulsion breaker selected from the group consisting of alkoxylated compounds containing amino, imino or OH groups, and PA0 (b) to achieve complete phase separation in the organic phase still containing small amounts of aqueous phase, the formation of relatively large droplets of the dispersed aqueous phase is effected in a coalescence stage.