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:
Sep. 12, 2017
Filed:
Mar. 16, 2017
Basell Polyolefine Gmbh, Wesseling, DE;
Dieter Littmann, Mücke, DE;
Jürgen Peter Mohrbutter, Alfter, DE;
Giulia Mei, Ferrara, IT;
Andre-Armand Finette, Köln, DE;
Sven Georg Wolfram, Euskirchen, DE;
Michael Deuerling, Weilerswist, DE;
Danir Khayrullin, Brühl, DE;
Georg Groos, Dannstadt-Schauernheim, DE;
Christoph Wolf, Pulheim-Dansweiler, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
The present technology relates to a process for polymerizing or copolymerizing ethylenically unsaturated monomers in the presence of free-radical polymerization initiators, wherein the polymerization is carried out in a continuously operated tubular reactor at temperatures from 100° C. to 350° C. and pressures from 180 MPa to 340 MPa, with a specific reactor surface area Aof 2 m/(t/h) to 5.5 m/(t/h), and the tubular reactor has a specific ratio RDof 0.0050 MPato 0.0069 MPaand an inner surface which has a surface roughness Ra of 2 μm or less.