Catalyst composition for the preparation of polyethylene

摘要

A novel catalyst composition preferably for polyethylene polymerisation is devised.
The catalyst composition comprises at least two different polymerization catalysts of which A) is at least one polymerization catalyst based on a hafnocene (A) and B) is at least one polymerization catalyst based on an iron component having a tridentate ligand bearing at least two aryl radicals with each bearing a halogen or tert-alkyl substituent in the ortho position.