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. 25, 2020
Filed:
Oct. 12, 2017
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventor:
Darryl J. Morrison, Calgary, CA;
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 4/6592 (2006.01); C08F 4/659 (2006.01); C08F 210/16 (2006.01); B01J 31/18 (2006.01); C08F 2/06 (2006.01);
U.S. Cl.
CPC ...
C08F 4/6592 (2013.01); C08F 4/65908 (2013.01); C08F 4/65912 (2013.01); C08F 210/16 (2013.01); B01J 31/1845 (2013.01); C08F 2/06 (2013.01);
Abstract
A new phosphinimine polymerization catalyst exhibits restricted rotation about a carbon-phosphorous bond. The restricted rotation is demonstrated using variable temperatureH NMR. Ethylene copolymers made using the catalysts have microstructures which are dependent on the temperature at which polymerization takes place.