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. 03, 2018
Filed:
Mar. 23, 2016
Basell Polyolefine Gmbh, Wesseling, DE;
Gerd Mannebach, Muenstermaifeld, DE;
Bernd Lothar Marczinke, Roemerberg, DE;
Gerhardus Meier, Frankfurt, DE;
Ulf Schueller, Weiterstadt, DE;
Shahram Mihan, Bad Soden, DE;
Andreas Maus, Frankfurt, DE;
Pietro Baita, Ferrara, IT;
Maria Di Diego, Ferrara, IT;
Lorella Marturano, Ferrara, IT;
Basell Polyolefine GmbH, Wesseling, DE;
Abstract
A process for preparing a polyolefin, including polymerizing olefins in the presence of an antistatic agent made from or containing an alkylene oxide derived polymer made from or containing in average from about 10 to about 200 repeating units —(CH—CHR—O)— with R being hydrogen or an alkyl group having from 1 to 6 carbon atoms, wherein the alkylene oxide derived polymer is a random copolymer of ethylene oxide and other alkylene oxides and a ratio of n:m is in the range of from 6:1 to 1:1, wherein (n) is the average number of repeating units —(CH—CH—O)— derived from ethylene oxide and (m) is the average number of repeating units —(CH—CHR'—O)— derived from the other alkylene oxides with R′ being an alkyl group having from 1 to 6 carbon atoms, and the end groups of the alkylene oxide derived polymer are —OH groups.