Verbessertes Katalysatorsystem zur Herstellung von Polyethylen-Copolymeren in einem Hochtemperatur-Lösungspolymerisationsverfahren

Details

Veröffentlichungs-Nr.

EP2933276

Aktenzeichen

EP14165142

Anmeldetag

17. April 2014

Veröffentlichung

9. Dezember 2020

Erteilung

9. Dezember 2020

Rechtsraum

EP

IPC

C08F210/16C08F4/659

Abstract

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) <img class="EMIRef" id="471013521-ia01" /> wherein M is Hf or Zr X is a sigma ligand, L is a bridge of the formula -SiR<8>2 -, wherein each R<8>is independently a C<1>-C<20>-hydrocarbyl, tri(C<1>-C<20>-alkyl)silyl, C<6>-C<20>-aryl, C<7>-C<20>-arylalkyl or C<7>-C<20>-alkylaryl n is 0, 1 or 2 R<1>and R<1'>are the same or can be different and can be a linear or branched C<1>-C<6>-alkyl group, R<2>and R<2'>are the same or are different and are a CH<2>-R<9>group, with R<9>being H or linear or branched C<1>-C<6>-alkyl group R<5>and R<5'>are the same or are different and can be H or a linear or branched C<1>-C<6>-alkyl group or a OR group, wherein R is a C<1>-C<6>-alkyl group R<6>and R<6'>are the same or are different and can be H or a C(R<10>)<3>group, with R<10>being the same or different and R<10>can be H or a linear or branched C<1>-C<6>-alkyl group or R<5>and R<6>and/or R<5'>and R<6'>taken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety, and R<7>and R<7'>can be the same or are different and can be H or a linear or branched C<1>-C<6>-alkyl group (ii) an aluminoxane cocatalyst and (iii) a boron containing cocatalyst

Anmelder

Firma

Borealis AG

Land

🇦🇹 Österreich

Fachgebiete