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. 02, 2013
Filed:
Nov. 03, 2010
Applicants:
Tapio Kokko, Porvoo, FI;
Erno Elovainio, Helsinki, FI;
Jouni Kivela, Helsinki, FI;
Klaus Nyfors, Porvoo, FI;
Kai Hagane, Langesund, NO;
Inventors:
Tapio Kokko, Porvoo, FI;
Erno Elovainio, Helsinki, FI;
Jouni Kivela, Helsinki, FI;
Klaus Nyfors, Porvoo, FI;
Kai Hagane, Langesund, NO;
Assignee:
Borealis AG, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/00 (2006.01); C08F 4/00 (2006.01); C08F 210/00 (2006.01); B01J 8/18 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention deals with a process of producing a polymer of at least one olefin in two consecutive reactors in gas phase in the presence of an olefin polymerization catalyst where an olefin is polymerized in a first polymerization reactor in the presence of an olefin polymerization catalyst and a first reaction gas mixture to form a fluidized bed comprising an olefin polymer and said first reaction gas mixture.