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:
Mar. 12, 1985
Filed:
Sep. 20, 1983
Applicant:
Inventors:
Roderich Gartner, Dinslaken, DE;
Boy Cornils, Dinslaken, DE;
Ludger Bexten, Hunxe, DE;
Dieter Kupies, Duisburg, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J / ;
U.S. Cl.
CPC ...
502 24 ; 423 22 ; 502 26 ; 502 27 ;
Abstract
To recover a hydroformylation catalyst system containing rhodium and phosphine, the aqueous solution containing the catalyst system is mixed with acid and then extracted with an amine which is dissolved in an organic solvent. The organic phase is separated and treated with the aqueous solution of an inorganic base, thereby recovering the catalyst in essentially pure form as an aqueous solution.