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:
Nov. 07, 2017
Filed:
Jun. 22, 2015
Basell Polyolefine Gmbh, Wesseling, DE;
Giuseppe Penzo, Ferrara, IT;
Rodrigo Carvajal, Bonn, DE;
Reinhard Kuehl, Bornheim, DE;
Elke Damm, Bad Vilbel, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more Cto Calpha-olefins in a reactor system comprising a polymerization reactor and one or more first heat exchangers located outside the polymerization reactor where the slurry in the polymerization reactor is cooled by withdrawing slurry from the polymerization reactor, cooling the slurry in the one or more first heat exchangers and returning the cooled slurry to the polymerization reactor, wherein the one or more first heat exchangers are cooled by a first coolant having a temperature of 29° C. or higher.