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:
Dec. 15, 1992
Filed:
Jul. 01, 1991
Applicant:
Inventors:
Michael S Matson, Bartlesville, OK (US);
Stan A Zisman, Bartlesville, OK (US);
Assignee:
Phillips Petroleum Company, Bartlesville, OK (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
585250 ; 585270 ; 585271 ; 585274 ; 585277 ;
Abstract
A cobalt carbonyl phosphine complex useful for hydrogenation of cyclic polyenes to corresponding cyclic monoenes is prepared by reaction of dicobalt carbonyl and a phosphine compound in at least one non-oxygenated aliphatic solvent. Selective hydrogenation of the cyclic polyenes comprises an induction period during which the polyenes are contacted with the cobalt carbonyl complex catlayst under hydrogen pressure followed by decreasing the reaction temperature and pressure for a period of time sufficient to complete the hydrogenation.