The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 1998
Filed:
Apr. 17, 1997
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, Plano, TX (US);
Kurt Schalapski, Oberhausen, DE;
Ernst Wiebus, Oberhausen, DE;
Wolfgang Zgorzelski, Oberhausen, DE;
Hoechst Aktiengesellschaft, , DE;
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).