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. 17, 2014
Filed:
Jul. 19, 2011
Craig Hulet, Calgary, CA;
Joel Racle, Bright's Grove, CA;
Ian Woods, Strathroy, CA;
Benjamin Milton Shaw, Calgary, CA;
Yves Lacombe, Calgary, CA;
Craig Hulet, Calgary, CA;
Joel Racle, Bright's Grove, CA;
Ian Woods, Strathroy, CA;
Benjamin Milton Shaw, Calgary, CA;
Yves Lacombe, Calgary, CA;
Nova Chemicals (International) S.A., Fribourg, CH;
Abstract
In the high pressure of polymerization of ethylene homopolymer or copolymers conditions in the reactor may become unstable leading to the decomposition ('decomp') of the reaction mixture. Monitoring temperature excursions traveling through the reactor over close thermocouples (a roller) to detect changes in the mean temperature and the moving temperature front for a group of thermocouples detects conditions potentially leading to a decomp.