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:
Apr. 29, 2014
Filed:
Dec. 20, 2010
Christian-ulrich Schmidt, Bonn, DE;
Klaus Berhalter, Bornheim-Dersdorf, DE;
Steve Makin, Cheshire, EP;
Kevin Taylor, Manchester, EP;
Christian-Ulrich Schmidt, Bonn, DE;
Klaus Berhalter, Bornheim-Dersdorf, DE;
Steve Makin, Cheshire, EP;
Kevin Taylor, Manchester, EP;
Basell Polyoefine GmbH, Wesseling, DE;
Abstract
Process for the preparation of ethylene homopolymers or copolymers in the presence of free-radical polymerization initiator at from 100° C. to 350° C. and pressures in the range of from 160 MPa to 350 MPa in a high-pressure polymerization unit comprising a high-pressure reactor with one or more reaction zones, to each of which free-radical polymerization initiator is fed, which is controlled by a model based predictive controller carrying out the steps.