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:
Dec. 13, 2016
Filed:
Dec. 10, 2012
Saudi Basic Industries Corporation, Riyadh, SA;
Aurora Alexandra Batinas-Geurts, Sittard, NL;
Nicolaas Hendrika Friederichs, Brunssum, NL;
Tom Schoffelen, Hulsberg, NL;
Erik Zuidema, 's-Hertogenbosch, NL;
SAUDI BASIC INDUSTRIES CORPORATION, Riyadh, SA;
Abstract
The invention relates to a catalyst system for the production of ultrahigh molecular weight polyethylene comprising I. a solid reaction product obtained by reaction of: (a) a hydrocarbon solution comprising (1) an organic oxygen containing magnesium compound or a halogen containing magnesium compound and (2) an organic oxygen containing titanium compound and (b) a mixture comprising a metal compound having the formula MeRXwherein X is a halogenide, Me is a metal of Group III of Mendeleev's Periodic System of Chemical Elements, R is a hydrocarbon radical containing 1-10 carbon atoms and 0≦n≦3 and a silicon compound of formula RSiClwherein 0≦m≦2 and R is a hydrocarbon radical containing 1-10 carbon atoms wherein the molar ratio of metal from (b): titanium from (a) is lower than 1:1 II. an organo aluminium compound having the formula AIRin which R is a hydrocarbon radical containing 1-10 carbon atoms and III. an external electron donor selected from the group of 1,2-dialkoxyalkanes, 1,2-dialkoxyalkenes or an external polymeric electron donor.