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:
Jul. 10, 2012
Filed:
Jan. 14, 2010
Dieter Littmann, Mücke, DE;
Andre-armand Finette, Köln, DE;
Jürgen Peter Mohrbutter, Alfter, DE;
Sven George Wolfram, Euskirchen, DE;
Dieter Littmann, Mücke, DE;
Andre-Armand Finette, Köln, DE;
Jürgen Peter Mohrbutter, Alfter, DE;
Sven George Wolfram, Euskirchen, DE;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
Process for the preparation of ethylene homopolymers or copolymers in a high pressure reactor with at least two spatially separated initiator injection points by polymerizing ethylene and optionally further monomers in the presence of at least two different mixtures of free-radical polymerization initiators at from 100° C. to 350° C. and pressures in the range of from 160 MPa to 350 MPa, wherein the process comprises the following steps: