Metallocenes having benzo-fused indenyl derivatives as ligands,

Details Metallocenes having benzo-fused indenyl derivatives as ligands, Metallocenes having benzo-fused indenyl derivatives as ligands,

1995-06-06

1999-08-03

Nagumo, Mark

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526127, 526134, 526943, 526150, 502117, 502103, C08F 4642

Patent

active

059326697

ABSTRACT:
A very effective catalyst system for olefin polymerization comprises a cocatalyst, preferably an aluminoxane, and a metallocene of the formula I ##STR1## in which, preferably, M.sup.1 is Zr or Hf, R.sup.1 and R.sup.2 are halogen or alkyl, R.sup.3 is alkyl, R.sup.4 to R.sup.10 are alkyl or hydrogen and R.sup.11 is a (substituted) alkylene or heteroatom bridge.

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