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:
Jun. 07, 2016
Filed:
Jul. 28, 2015
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
Darryl J. Morrison, Calgary, CA;
Charles Ashton Garret Carter, Calgary, CA;
Amy Marie Baltimore, Calgary, CA;
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/02 (2006.01); C08F 4/6592 (2006.01); C08F 4/642 (2006.01); C08F 210/16 (2006.01); C08F 4/659 (2006.01);
U.S. Cl.
CPC ...
C08F 4/65916 (2013.01); C08F 4/02 (2013.01); C08F 4/022 (2013.01); C08F 4/025 (2013.01); C08F 210/16 (2013.01); C08F 4/6592 (2013.01); C08F 4/65912 (2013.01); C08F 2410/01 (2013.01);
Abstract
A phosphinimine catalyst immobilized on a passivated inorganic oxide support, had high activity at low co-catalyst concentrations and gave, under gas phase polymerization conditions, ethylene copolymer with a high molecular weight. A method of making a passivated silica support involves treatment of silica with an organoaluminum compound, a diorganomagnesium compound and a source of chloride (to make MgCl) under anhydrous conditions and in the absence of polar solvents.