Borealis Ag

David Quin

Luigi Resconi

Alexander Z Voskoboynikov

Vyatcheslav V Izmer

Dmitry S Kononovich

Anna Fait

Noureddine Ajellal

Oleg Vladimirovich Samsonov

Irfan Saeed

Luigi Maria Cristoforo Resconi

Maria Ranieri

Oleg Samsonov

Catalyst system, the catalyst system comprising (i) at least one metallocene complex of formula (I) wherein Mt1 is Hf, X is a sigma-donor ligand, R, R, Rare the same or different from each other and can be hydrogen or a saturated linear or branched C-Calkyl, whereby the alkyl group can optionally contain up to 2 heteroatoms belonging to groups 14-16 of the periodic table, or Rand Ror Rand Rcan form a ring having 4 to 6 C-atoms and 1 to 3 double bonds, Rand Rare 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 belonging to groups 14-16 of the periodic table, n can be 1 to 5, Ar is a C-C-aryl or -heteroaryl group, which can be unsubstituted or substituted by 1 to 5 linear or branched C-Calkyl group(s), and (ii) an aluminoxane cocatalyst and (iii) optionally an aluminium alkyl compound AI(R), with Rbeing a linear or branched C-C-alkyl group. 

Aluminoxane-activated metallocene catalysts

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Teignmouth, United Kingdom

David Quin