Metallocenes containing ligands of 2-substituted indenyl...

Details Metallocenes containing ligands of 2-substituted indenyl... Metallocenes containing ligands of 2-substituted indenyl...

C - Chemistry, Metallurgy

07

F

C07F 7/00 (2006.01) C07F 7/08 (2006.01) C07F 9/00 (2006.01) C07F 11/00 (2006.01) C07F 17/00 (2006.01) C08F 4/60 (2006.01) C08F 10/00 (2006.01) C08F 32/04 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01) C08F 110/06 (2006.01)

Patent

CA 2055218

Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts in the polymerization of olefins. The novel metallocenes of the formula I Image in which, preferably, M1 is Zr or Hf, R1 and R2 are alkyl or halogen, R3 and R4 are hydrogen, R5 and R6 are alkyl or haloalkyl, -(CR8R9)m-R7-(CR8R9)n- is a single- or multi- membered chain in which R7 may also be a (substituted) hetero atom, m + n is zero or 1, and R10 is hydrogen, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high stereospecificity and high melting point.

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