C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/54 (2006.01) C08F 4/60 (2006.01) C08F 4/622 (2006.01) C08F 4/623 (2006.01) C08F 10/00 (2006.01) C08F 4/619 (2006.01) C08F 4/6192 (2006.01) C08F 110/02 (2006.01) C08F 210/16 (2006.01)
Patent
CA 2139064
Disclosed in an olefin polymerization catalyst comprising a transition metal compound having at least two transition metals in which at least one of said metals is bonded to a ligand having a cyclopentadienyl skeleton, at least one of said metals is selected from Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and lanthanoid metals and at least one of the others is selected from the specific transition metals; and an organoaluminum oxy-compound or an organoboron compound. Corresponding to the kind of the metal combined with said metal selected from Sc, Y, Ti, Zr, Hf, V, Nb, Ta, Cr, Mo, W and lanthanoid metals, the olefin polymerization catalyst exhibit a property to give polymers having a wide molecular weight distribution in spite of the catalyst system using one kind of a transition metal compound, or to give polymers having high molecular weight and be excellent in the polymerization activity at low polymerization temperature.
Mitani Makoto
Mukaiyama Teruaki
Oouchi Kunihiro
Mitsui Chemicals Inc.
Smart & Biggar
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