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:
Jan. 30, 2018
Filed:
May. 19, 2015
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
James A. Auger, Airdrie, CA;
Craig Allan Hulet, Calgary, CA;
Ross Donald Moreton, Sarnia, CA;
Benjamin Milton Shaw, Calgary, CA;
Amanda Dolores Murphy, Calgary, CA;
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 10/02 (2006.01); C08F 2/38 (2006.01);
U.S. Cl.
CPC ...
C08F 10/02 (2013.01);
Abstract
In the high pressure polymerization of ethylene homopolymers or copolymers, conditions in the high pressure recycle system may lead to the build-up of low molecular weight oligomers and waxes. Sequentially draining knock-out pots, located downstream of a high pressure separator, at regular intervals can reduce the build-up of low molecular weight oligomers and waxes during the high pressure polymerization of alpha olefins.