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:
Aug. 22, 2017
Filed:
Aug. 06, 2015
Basell Polyolefine Gmbh, Wesseling, DE;
Reinhard Kuehl, Bornheim, DE;
Harald Prang, Erftstadt, DE;
Rodrigo Carvajal, Bonn, DE;
Elke Damm, Bad Vilbel, DE;
Phil Pyman, Bad Soden, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
The present disclosure relates to a process for the preparation of polyethylene by polymerizing in a slurry ethylene and optionally one or more Cto Calpha-olefins. In some embodiments, the polymerization is carried out in a cylindrical polymerization reactor equipped with an agitator for mixing the contents of the reactor and inducing a flow of the slurry, the ethylene is fed into the reactor by an ethylene injection system comprising one or more injection nozzles which project through the bottom reactor head or through the reactor wall and extend from 0.02-0.5 times the inner diameter D into the reactor, and the ethylene exits the injection nozzle with an exit velocity from 10-200 m/s.