Process for olefin preparation using metallocenes having benzo-f

Details Process for olefin preparation using metallocenes having benzo-f Process for olefin preparation using metallocenes having benzo-f

1995-06-06

1998-11-03

Nazario-Gonzalez, Porfirio

Catalyst, solid sorbent, or support therefor: product or process

Catalyst or precursor therefor

Plural component system comprising a - group i to iv metal...

502152, 526127, 526160, 526170, 526172, 526943, 556 7, 556 11, 556 20, 556 43, 556 53, C08F 460, B01J 3100, C07F 1700

Patent

active

058308210

ABSTRACT:
Metallocenes having benzo-fused indenyl derivatives as ligands, processes for their preparation and their use as catalysts
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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