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:
Sep. 08, 2020
Filed:
Oct. 24, 2017
Sabic Global Technologies B.v., Bergen Op Zoom, NL;
Remy Peter Theresia Smeets, Geleen, NL;
Nicolaas Hendrika Friederichs, Geleen, NL;
Robert Lap Key Chan, Geleen, NL;
SABIC GLOBAL TECHNOLOGIES B.V., Bergen op Zoom, NL;
Abstract
The invention relates to a process for the production of ultra high molecular weight polyethylene in the presence of a catalyst system that comprises (I) the solid reaction product obtained from the reaction of a) a hydrocarbon solution containing 1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and 2) an organic oxygen containing titanium compound and b) an aluminium compound of the formula AlRXwhere R is a hydrocarbylgroup containing (3-10) carbon atoms, X is an halogenide and 0<a<3 and (I!) an aluminium compound having the formula AlRin which R is a wherein the molar ratio of aluminium from (b): titanium from (a) is higher than 3:1 and the average particle size of the catalyst ranges between 0.1 μm and 1.0 μm and The obtained polymer is in the form of spheroidal particles with an average particle size of less than 50 μm or is in the form of loosely bound agglomerates consisting of spheroidal sub-particles with an average particle size of less than 50 μm.