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. 13, 2021
Filed:
Dec. 11, 2018
Applicant:
Nova Chemicals (International) S.a., Fribourg, CH;
Inventors:
Assignee:
NOVA Chemicals (International) S.A., Fribourg, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/06 (2006.01); C08F 2/00 (2006.01); C08F 2/01 (2006.01); C08F 4/6592 (2006.01); C08F 4/659 (2006.01); C08F 4/02 (2006.01); C08F 4/12 (2006.01); C08F 210/16 (2006.01); B01J 19/18 (2006.01);
U.S. Cl.
CPC ...
C08F 2/06 (2013.01); B01J 19/1837 (2013.01); C08F 2/001 (2013.01); C08F 2/01 (2013.01); C08F 4/022 (2013.01); C08F 4/12 (2013.01); C08F 4/6592 (2013.01); C08F 4/65912 (2013.01); C08F 210/16 (2013.01); B01J 2219/00038 (2013.01); B01J 2219/00121 (2013.01); C08F 4/65908 (2013.01); C08F 2410/02 (2013.01); C08F 2420/04 (2013.01);
Abstract
A solution polymerization process uses a reactor system in which a first stage is operated in a non adiabatic (cooled) manner and is connected to a second stage containing a downstream reactor that is operated adiabatically. In an embodiment, the first reactor stage includes at least one loop reactor and the second stage includes a tubular reactor. In an embodiment, the first stage is operated with a single site catalyst and at least one downstream reactor uses a Ziegler Natta catalyst.