Patent ID: 7767613
Filing Date: 2010-08-03
Classification: C08F,Y10T

Abstract:
1. A catalyst composition comprising at least two different polymerization catalysts, wherein A is at least one polymerization catalyst based on a monocyclopentadienyl complex of metal of groups 4-6 of the Periodic Table of the Elements wherein the cyclopentadienyl system is substituted by an uncharged donor (A1) or a hafnocene (A2); and B) is at least one polymerization catalyst based on an iron component having a tridentate ligand bearing a least two ortho, ortho-disubstituted aryl radicals (B); wherein A1 has the general formula III E R R Z is a divalent bridge between A and Cp which is selected from L R R A is an uncharged donor group containing one or more atoms of groups 15 and 16 of the Periodic Table of the elements; M K is 0 is 1. and wherein A2 has the general formula VI; wherein X E l is 1, 2 or 3 and is, depending on the valence of Hf, provided that the metallocene complex of the general formula (VI) is uncharged; R R radicals R Z wherein R 9B -R 13B are each, independently of one another, hydrogen, C 1 -C 22 alkyl, 5- to 7-membered cycloalkyl or cycloalkenyl which optionally bears C 1 -C 10 alkyl groups as substituents, C 2 -C 22 alkenyl, C 6 -C 22 aryl, arylalkyl having from 1 to 16 carbon atoms in the alkyl part and 6-21 carbon atoms in the aryl part, NR 14B 2 , N(SiR 14B 3 ) 2 , OR 14B , OSiR 14B 3 , SiR 14B 3 ; radicals R 8B -R 13B are optionally substituted by halogens and two radicals R 9B -R 13B are optionally joined to form a five-, six- or seven-membered ring; optionally two vicinal radicals R 9B -R 13B are joined to form a five-, six- or seven-membered heterocycle containing at least one atom from the group consisting of N, P, O and S; radicals R E R R M A R R v is 1 or when A optionally R