Polymerization process using dual catalyst compositions

An ethylene polymerization process, the process comprising:

• contacting at least one catalyst composition with ethylene, optionally hydrogen, and optionally one or more olefin comonomers;
• and polymerizing said ethylene and the optional one or more olefin comonomers, in the presence of the at least one catalyst composition, and optional hydrogen, thereby obtaining an ethylene polymer, wherein the at least one catalyst composition comprises:
• catalyst component A comprising a bridged metallocene compound represented by compound of formula (III):
• wherein
• Ar2 is cyclopentadienyl, optionally substituted with one or more substituents each independently selected from the group comprising alkyl, alkenyl, cycloalkyl, cycloalkenyl, cycloalkenylalkyl, aryl, alkoxy, alkylaryl, arylalkyl, halogen, Si(R10)3, and heteroalkyl;
• wherein each R10 is independently hydrogen, alkyl, or alkenyl;
• Ar3 is fluorenyl, optionally substituted with one or more substituents each independently selected from the group comprising alkyl, alkenyl, cycloalkyl, cycloalkenyl, cycloalkenylalkyl, aryl, alkoxy, alkylaryl, arylalkyl, halogen, Si(R10)3, and heteroalkyl;
• wherein each R10 is independently hydrogen, alkyl, or alkenyl;
• M2 is zirconium;
• Q3 and Q4 are each independently selected from the group comprising halogen, alkyl, —N(R11)2, alkoxy, cycloalkoxy, aralkoxy, cycloalkyl, aryl, alkylaryl, aralkyl, and heteroalkyl;
• wherein R11 is hydrogen or alkyl;
• L2 is a divalent group or moiety bridging Ar2 and Ar3 groups;
• catalyst component B comprising a bridged metallocene compound represented by compound of formula (IV):
• wherein
• each Ar1 is independently indenyl, each indenyl being independently substituted with one or more substituents, wherein at least one of the substituents is an unsubstituted or substituted aryl or heteroaryl;
• wherein the unsubstituted or substituted aryl or heteroaryl substituent is not on the position 3 and/or 5 of the indenyl, preferably wherein the unsubstituted or substituted aryl or heteroaryl is on the 4-position of each indenyl;
• M1 is zirconium;
• Q1 and Q2 are each independently selected from the group comprising hydrogen, halogen, alkyl, —N(R11)2, alkoxy, cycloalkoxy, aralkoxy, cycloalkyl, aryl, alkylaryl, aralkyl, and heteroalkyl;
• wherein R11 is hydrogen or alkyl;
• L1 is a divalent group or moiety bridging the two Ar1 groups;
• and an optional activator;
• an optional support;
• and an optional co-catalyst.