Catalyst component and catalyst

Details Catalyst component and catalyst Catalyst component and catalyst

C - Chemistry, Metallurgy

07

F

C07F 17/00 (2006.01) C08F 4/648 (2006.01) C08F 10/00 (2006.01) C08F 10/02 (2006.01) C08F 4/659 (2006.01) C08F 4/6592 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2186696

A catalyst component for the polyemrization of olefinic hydrocarbons comprises a modified metallocene compound derived from a starting metallocene compound of the formula R1pM1X14-p or R12Me1X1' ..... I wherein Me1 is a transition metal of Group IVa in the Periodic Table, R1 is a ligand selected from the group consisting of a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group and a substituted fluorenyl group, which may be bonded together through a C2-C18 hydrocarbon group and/or a silylene group, said substituted cyclopnetadineyl said substituted indenyl group and said substituted fluorenyl group each having at least one hydrogen atom directly bonded to their respective 5-membr rings, X1 is a halogen atom, a hydrogen atom or a C1-C24 hydrocarbon moiety, p is 1 p 4 and X1' is a C1-C20 alkylidene group; said modified metallocene compound having a 5-member ring free of hydrogen peak in 1H-NHR spectrum and said 5-member ring belonging to said ligand. A catalyst is also disclosed, which essentially comprises the above catalyst component in one aspect and a combination in another aspect of a metallocene compound mutually contacted with a modified organoaluminum compound having Al-O-Al bonds and borate and/or borane. The catalyst is characterized by the absence of hydrogen peaks at the 5-member ring in the constituent groups of the metallocene compound.

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