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:
Feb. 21, 2006
Filed:
Sep. 16, 2003
Applicants:
Xiaoliang Gao, Calgary, CA;
Jessie Leighton, Calgary, CA;
Matthew Gerald Kowalchuk, Calgary, CA;
P. Scott Chisholm, Calgary, CA;
Inventors:
Xiaoliang Gao, Calgary, CA;
Jessie Leighton, Calgary, CA;
Matthew Gerald Kowalchuk, Calgary, CA;
P. Scott Chisholm, Calgary, CA;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/646 (2006.01);
U.S. Cl.
CPC ...
Abstract
A catalyst system comprises 1) a group 4 organometallic catalyst and 2) an activator comprising a solid zirconium acid component and a metal alkyl. The catalyst system is inexpensive and is highly active for the polymerization of olefins. Preferred organometallic catalysts contain a cyclopentadienyl ligand, a phosphinimine ligand and or a ketimide ligand.