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:
Aug. 02, 2022
Filed:
Oct. 25, 2018
Applicant:
Borealis Ag, Wien, AU;
Inventors:
Günter Weickert, Ahaus, DE;
Eric-Jan Prinsen, Aadorp, NL;
Klaus Nyfors, Porvoo, FI;
Erno Elovainio, Porvoo, FI;
Vasileios Kanellopoulos, Linz, AU;
Assignee:
BOREALIS AG, Vienna, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 8/18 (2006.01); B01J 8/44 (2006.01); C08F 2/34 (2006.01); C08F 10/02 (2006.01); C08F 10/06 (2006.01);
U.S. Cl.
CPC ...
B01J 8/1827 (2013.01); B01J 8/1836 (2013.01); B01J 8/44 (2013.01); C08F 10/02 (2013.01); C08F 10/06 (2013.01); B01J 2208/00274 (2013.01);
Abstract
The present invention relates to a process for polymerizing olefin monomer(s) in a gas solids olefin polymerization reactor wherein the fluidization gas is split and returned to the reactor into the bottom zone of the reactor and directly into the dense phase formed by particles of a polymer of the olefin monomer(s) suspended in an upwards flowing stream of the fluidization gas in the middle zone of the reactor.