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. 18, 2020
Filed:
Jan. 19, 2017
Applicant:
Sabic Global Technologies B.v., Bergen op Zoom, NL;
Inventors:
Assignee:
SABIC Global Technologies B.V., Bergen op Zoom, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/34 (2006.01); C08F 110/02 (2006.01); C08F 4/02 (2006.01); C08F 4/69 (2006.01); C08F 4/642 (2006.01);
U.S. Cl.
CPC ...
C08F 2/34 (2013.01); C08F 4/025 (2013.01); C08F 4/6423 (2013.01); C08F 4/69 (2013.01); C08F 110/02 (2013.01); C08F 2410/04 (2013.01); C08F 2500/04 (2013.01); C08F 2500/07 (2013.01); C08F 2500/12 (2013.01); C08F 2500/18 (2013.01);
Abstract
The invention relates to a process for the production of polyethylene by gas phase polymerisation of ethylene in the presence of a supported chromium oxide based catalyst which is modified with an amino alcohol wherein the molar ratio of amino alcohol:chromium ranges between 0.5:1 and 1.5:1 wherein the support is silica having a surface area (SA) between 250 m2/g and 400 m2/g and a pore volume (PV) between 1.1 cm3/g and less than 2.0 cm3/g.