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:
Oct. 02, 2018
Filed:
Aug. 12, 2016
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
Victoria Ker, Calgary, CA;
Peter Phung Minh Hoang, Calgary, CA;
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 210/14 (2006.01); C08F 210/16 (2006.01);
U.S. Cl.
CPC ...
C08F 210/14 (2013.01); C08F 210/16 (2013.01); C08F 2410/01 (2013.01); C08F 2410/02 (2013.01);
Abstract
A method for altering the melt flow ratio (MFR) of ethylene copolymers made in a gas phase reactor using a supported Ziegler-Natta catalyst treated with a catalyst modifier. The method involves changing the amount of the catalyst modifier added to the supported Ziegler-Natta polymerization catalyst to effect changes in the MFR of the resulting polymer.