Catalyst Composition for Polymerization of Olefins, Polymerization Process Using the Same, and Method for Its Preparation

A process for homopolymerization or copolymerization of alpha-olefins using a catalyst composition comprising

• a) a catalytic metallocene component (A) of the formula (I)
• wherein:
• M1 is a transition metal from the lanthanides or from group 3, 4, 5 or 6 of the periodic system of elements, Q1 is an activatable ligand to M1, k is the number of Q1 groups and is equal to the valence of M1 minus 2, R1 is a bridging group and Z1-Z6 and X1-X4 are substituents, wherein R1 is bonded to the indenyl group at the 2-position thereof,
• b) at least one catalytic Ziegler-Natta type transition metal component (B),
• c) at least one activator, and
• d) support material.

A method for preparing a catalyst composition, comprising the steps of:

• (i) contacting a support material with an organomagnesium compound;
• (ii) optionally contacting the magnesium treated support with an alkyl chloride, a silane chloride, an alcohol, an amine, a sulfonate, an antistatic agent or mixtures thereof;
• (iii) contacting the magnesium-treated support with a transition metal component selected from the group 3-10 of the periodic table of elements;
• (iv) contacting the intermediate obtained in step (iii) with a catalytic component (A) of the formula (I)
• wherein:
• M1 is a transition metal from the lanthanides or from group 3, 4, 5 or 6 of the periodic system of elements, Q1 is an activatable ligand to M1, k is the number of Q1 groups and is equal to the valence of M1 minus 2, R1 is a bridging group and Z1-Z6 and X1-X4 are substituents, wherein R1 is bonded to the indenyl group at the 2-position thereof, optionally together with an activator;
• and
• (v) optionally modifying the catalyst composition with an antistatic reagent in step (ii)-(iv), optionally in presence of an organoaluminum compound.