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. 20, 2022
Filed:
Dec. 12, 2017
Borealis Ag, Vienna, AT;
Noureddine Ajellal, Helsinki, FI;
Anna Fait, Neuhofen an der Krems, AT;
Luigi Resconi, Neuhofen an der Krems, AT;
Vyatcheslav Izmer, Moscow, RU;
Dmitry Kononovich, Moscow, RU;
Alexander Voskoboynikov, Moscow, RU;
Rafael Sablong, Eindhoven, NL;
Timo Sciarone, DX Eindhoven, NL;
Borealis AG, Vienna, AT;
Abstract
Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I), M is Hf or a mixture with Zr, provided that more than 50% by moles of the complex of Formula I has M=Hf, X is a sigma ligand, R are the same or different from each other and can be saturated linear or branched C-Calkyl, C-Caryl, C-Calkylaryl or C-Carylalkyl groups, which can optionally contain up to 2 heteroatoms or silicon atoms, Ris a C-C-aryl, which can be unsubstituted or substituted by one or up to 5 linear or branched C-Calkyl group(s), Ris a saturated linear or cyclic C-Calkyl group or a branched CRRRgroup, wherein Ris hydrogen or an C-Calkyl group and Rand Rare the same or are different and can be an C-Calkyl group and (ii) a boron containing cocatalyst.