Patent ID: 8455386
Filing Date: 2013-06-04
Classification: C08F,Y10S

Abstract:
1. A catalyst composition comprising: a) at least one metallocene catalyst component of formula (I): wherein Cp is a cyclopentadienyl ring; C′p is a fluorenyl ring; R″ is a structural bridge between Cp and C′p; each R or R′ is the same or different and is selected from a hydrocarbyl group having from 1-20 carbon atoms, a halogen, an alkoxy group, an alkoxyalkyl group, an alkylamino group or an alkylsilyl group or two neighbouring substituents can be linked to form a cycle; M is a metal atom from group 4 of the Periodic Table; and each Q is a hydrocarbon having from 1-20 carbon atoms or is a halogen; m is an integer from 1 to 4 and n is an integer from 1 to 8 or wherein R″, M, Q and R are as described above, Ind is an indenyl group and q is an integer from 1 to 6, or wherein R″, Cp, M, Q, R and m are as defined previously and X is an heteroatom, substituted or unsubstituted selected from P or O, wherein the metal is hafnium in the metallocene catalyst components of formula I or I′; b) a single site polymerisation catalyst component of formula (II): wherein L is an heteroatom-containing ligand; n is an integer of 1, 2, or 3; Me is Fe; each Q′ is independently a hydrocarbon having 1-20 carbon atoms or a halogen; and p is the valence of Fe minus the sum of the coordination numbers of all L; c) an activating agent comprising methylaluminoxane combined with a sterically hindered Lewis base, wherein for Formulas (I) and (I′), the methylaluminoxane is MMAO.