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:
Feb. 13, 2024
Filed:
Sep. 19, 2019
Applicant:
Borealis Ag, Vienna, AT;
Inventors:
Klaus Nyfors, Porvoo, FI;
Vasileios Kanellopoulos, Linz, AT;
Erno Elovainio, Porvoo, FI;
Ravindra Tupe, Porvoo, FI;
Victor Sumerin, Porvoo, FI;
Assignee:
BOREALIS AG, Vienna, AT;
Primary Examiner:
Int. Cl.
CPC ...
C08F 10/02 (2006.01); C08F 2/00 (2006.01); C08F 2/34 (2006.01); C08F 4/02 (2006.01); C08F 4/64 (2006.01); C08F 210/02 (2006.01); C08F 210/06 (2006.01); C08F 210/14 (2006.01);
U.S. Cl.
CPC ...
C08F 2/001 (2013.01); C08F 2/34 (2013.01); C08F 4/022 (2013.01); C08F 4/64 (2013.01); C08F 210/02 (2013.01); C08F 210/06 (2013.01); C08F 210/14 (2013.01);
Abstract
The present invention relates to a multi-stage process for producing a Cto Colefin polymer composition in a process comprising at least two reactors, wherein a pre-polymerized solid Ziegler-Natta catalyst is prepared by carrying out an off-line pre-polymerization of a solid Ziegler-Natta catalyst component with a Cto Colefin monomer before feeding to the polymerization process.