C - Chemistry – Metallurgy – 07 – F
Patent
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 110/06 (2006.01) C08F 4/639 (2006.01) C08F 4/6392 (2006.01)
Patent
CA 2055219
2-Substituted bisindenylmetallocenes, process for their preparation, and their use as catalysts in the poly- merization of olefins. The novel metallocenes of the formula I (see figure I) 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, and m + n is zero or 1, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high molecu- lar weight.
Antberg Martin
Dolle Volker
Rohrmann Jurgen
Spaleck Walter
Winter Andreas
Basell Polyolefine Gmbh
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Hoechst Aktiengesellschaft
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