Catalyst Systems and Polymerization Processes for Using the Same

A catalyst system comprising the product of the combination of:

• a) a first metallocene catalyst and a second metallocene catalyst independently selected and represented by the formula
• wherein:
• M is a Group 4-6 metal;
• each X1 and X2 is, independently, a hydrocarbyl radical having from 1 to 20 carbon atoms, hydride, amide, alkoxide, sulfide, phosphide, halide, diene, amine, phosphine, ether, or X1 and X2 is part of a fused ring structure;
• each of R1, R2, R3, R4, R6, R7, R8, and R9 is, independently, a hydrogen, halide, alkoxide or a C1 to C40 substituted or unsubstituted hydrocarbyl group, or a pair of R1, R2, R3, R4, R6, R7, R8, and R9 form a substituted or unsubstituted fused ring structure;
• T is a bridging group comprising, independently, one or more Group 14-16 atoms;
• and
• each Ra and Rb is optional and independently, a hydrocarbyl or a substituted hydrocarbyl;
• b) at least one activator;
• and
• c) optionally, at least one support;
• wherein the bridging group T of the second metallocene catalyst comprises at least two Group 14-16 atoms and at least one more Group 14-16 atom than the bridging group T of the first metallocene catalyst.