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. 17, 1996
Filed:
May. 23, 1995
Applicant:
Inventors:
Arpad F Somogyvari, Calgary, CA;
Beth L Creed, Airdrie, CA;
Antonio P Nicola, Calgary, CA;
Alan R Sanger, Edmonton, CA;
David J Law, Edmonton, CA;
Ronald G Cavell, Edmonton, CA;
Assignee:
The Governors of the University of Alberta, Edmonton, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C / ; C07C / ;
U.S. Cl.
CPC ...
585513 ; 585510 ; 585511 ; 585512 ; 585514 ; 585515 ; 585520 ; 585526 ; 585527 ; 585528 ; 585530 ; 585531 ;
Abstract
The present invention relates to the oligomerization of lower alpha olefins, and particularly ethylene, to higher olefins in the presence of a catalyst precursor having either or both of a dithiophosphinate complex and a heterobifunctional ligand having a phosphine center and an imine or similar center, in the presence of an activator. The catalysts have a high reactivity and a good selectivity.