Patent · US Expired

Process for the hydroformylation of olefinically unsaturated compounds

US5808168A · kind A · utility

3Cited by

1References

23Claims

0Family size

Assignee

Hoechst GmbH · DE

Inventors

Helmut Bahrmann · Hamminkeln, DE
Dieter Frohning · Wesel, DE
Wilhelm Gick · Duisburg, DE
Wolfgang Hofs · Oberhausen, DE
Heinz Kalbfell · Schermbeck, DE
Harald Kappesser · Oberhausen, DE
Peter Lappe · Dinslaken, DE
Kurt Schalapski · Oberhausen, DE
Ernst Wiebus · Oberhausen, DE
Wolfgang Zgorzelski · Oberhausen, DE

Key dates

Filing date	Apr 17, 1997
Grant date	Sep 15, 1998
Priority date	—
Expiry date	Apr 17, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C45/50
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Waste gas obtained in the hydroformylation of olefinically unsaturated compounds in the presence of an aqueous catalyst solution comprising water-soluble rhodium complexes (1st reaction stage) is fed to a homogeneous reaction system in which residual amounts of the olefinically unsaturated compounds from the first reaction stage are reacted in a homogeneous reaction system (2nd reaction stage).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.