Multinuclear metallocene catalyst complexes for olefin polymerisation and copolymerisation and method of preparing thereof

Abstract

The invention relates to a multinuclear metallocene catalyst of general formula (1); wherein Y and Y′ are the same or different and independently selected from a C1-20 linear hydrocarbyl group; C1-20 branched hydrocarbyl group; C1-20 cyclic hydrocarbyl group; a C1-30 aryl group and a C1-30 substituted aryl group; L and L′ are the same or different and each is an electron-donating group independently selected from the elements of Group 15 of the Periodic Table; Q and Q′ are the same or different and independently selected from hydrogen, a C1-30 alkyl group and a C1-30 aryl group; M″ is a metal selected from Group 3, 4, 5, 6, 7, 8, 9 and 10 elements and from lanthanide series elements of the Periodic Table; Z is selected from the group consisting of hydrogen; a halogen element; a C1-20 hydrocarbyl group; C1-20 alkoxy group and a C1-20 aryloxy group; B and B′ are the same or different and each is a half sandwich metallocene compound, with B being represented by Formula 2 and B′ being represented by Formula 3: W-M-Xx (Formula 2), W′-M′-X′x′, (Formula 3) wherein: W and W′ are the same or different and independently a ligand compound having a cyclo pentadienyl skeleton selected from the group consisting of cyclopentadienyl, substituted cyclopentadienyl, indenyl, substituted indenyl, fluorenyl and substituted fluorenyl; M and M′ are the same and each is independently selected from the group consisting of scandium; yttrium; lanthanoid series elements; titanium; zirconium; hafnium; vanadium; niobium; and tantalum; X and X′ are the same or different and each is selected from the group consisting of hydrogen; a halogen element; a C 1-20 hydrocarbyl group, C1-20 alkoxy group; and C1-20 aryloxy group; x and x′ are independently integers from 0 to 3; z is an integer from 1 to 5; n, n′ are independently 0 or 1, with 1≦(n+n′)≦2. The invention further relates to a method to prepare said multinuclear metallocene catalyst compound. The invention further relates to a catalyst system and to a process for the polymerisation of olefins.

Dependencies are inferred from the claim text.