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:
Oct. 26, 2021
Filed:
Aug. 16, 2018
Basell Polyolefine Gmbh, Wesseling, DE;
Christoph Wolf, Pulheim-Dansweiler, DE;
Dieter Littmann, Mücke, DE;
Michael Deuerling, Weilerswist, DE;
Andre-Armand Finette, Cologne, DE;
Danir Khayrullin, Bruehl, DE;
Juergen Mohrbutter, Alfter, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A process for the preparation of ethylene homopolymers or copolymers in a facility having a high-pressure tubular reactor and a preheater, wherein a reaction fluid introduced into the reactor at a reactor inlet is heated in the preheater and the average velocity of the reaction fluid in the preheater is lower than the average velocity of the reaction fluid in the tubular reactor and the ratio of the average velocity in the tubular reactor to the average velocity of the reaction fluid in the preheater is in the range from 1.5 to 5.