MULTINUCLEAR METALLOCENE CATALYST COMPLEXES FOR OLEFIN POLYMERISATION AND COPOLYMERISATION AND METHOD OF PREPARING THEREOF

摘要

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 C_1-20 linear hydrocarbyl group; C_1-20 branched hydrocarbyl group; C_1-20 cyclic hydrocarbyl group; a C_1-30 aryl group and a C_1-30 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 C_1-30 alkyl group and a C_1-30 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 C_1-20 hydrocarbyl group; C_1-20 alkoxy group and a C_1-20 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-X_x (Formula 2), W'-M'-X'_x' (Formula 3) wherein: W and W' are the same or different and independently a ligand compound having a cyclopentadienyl 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, C_1-20 alkoxy group; and C_1-20 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.