Catalysts containing metallocenes with arylsubstituted indenyl derivatives as ligands, process and intermediates for the preparation of these metallocenes and their use

摘要

A very active catalyst system for the polymerisation or copolymerisation of olefins consists of a co-catalyst, preferably an aluminoxane or a supported aluminoxane, and a metallocene of the formula I in which, in the preferred form, M<1> denotes Zr or Hf, R<1> and R<2> denote halogen or alkyl, R<3> denotes alkyl, R<4> to R<12> denote alkyl or hydrogen and R<13> denotes a (substituted) alkylene or heteroatom bridge. The metallocenes, in particular the zirkonocenes, produce polymers of very high molecular weight in the industrially particularly interesting temperature range between 50 and 80 DEG C if the catalyst activities are high, and polymers of very high molecular weight, very high stereotacticity and high melting point in the case of prochiral monomers. Moreover, using supported catalyst systems, reactor coatings are avoided.