Metallocenes containing aryl-substituted indenyl derivatives...

Details Metallocenes containing aryl-substituted indenyl derivatives... Metallocenes containing aryl-substituted indenyl derivatives...

C - Chemistry, Metallurgy

07

F

C07F 17/00 (2006.01) C07C 17/14 (2006.01) C07C 45/46 (2006.01) C07C 49/67 (2006.01) C07F 7/08 (2006.01) C08F 10/00 (2006.01) C08F 297/08 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01) C08F 110/02 (2006.01) C08F 110/06 (2006.01) C08F 210/06 (2006.01) C08F 210/16 (2006.01)

Patent

CA 2099214

A very effective catalyst system for the polymerization or copolymerization of olefins comprises a cocatalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I (see formula I) in which, in the preferred form, M1 is Zr or Hf, R1 and R2 are halogen or alkyl, R3 is alkyl, R4 to R12 are alkyl or hydrogen and R13 is a (substituted) alkylene or heteroatom bridge. The metallocenes, in particular the zirconocenes, produce polymers of very high molecular weight, in the case of prochiral monomers polymers of very high molecular weight, very high stereotacticity and very high melting point, at high catalyst activities in the industrially particularly interesting temperature range between 50 and 80°C. In addition, reactor deposits are avoided by means of supported catalyst systems.

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