Patent ID: 8598287

Claim:
A process for improving the film haze of a polymer, said process comprising: a) forming a polymer by polymerizing ethylene, an olefin monomer having from 3 to 8 carbon atoms, and, optionally, one or more other olefin monomers having from 2 to 30 carbon atoms in the presence of a catalyst system comprising a cyclic bridged metallocene activated by an activator, the activator comprising aluminoxane, a modified aluminoxane, or a mixture thereof, and a support, wherein the cyclic bridged metallocene is L A (R′SiR′)L B ZrQ 2 ), where L A and L B are independently an unsubstituted or a substituted cyclopentadienyl ligand bonded to Zr and defined by the formula (C 5 H 4-d R d ), where R is hydrogen, a hydrocarbyl substituent, a substituted hydrocarbyl substituent, or a heteroatom substituent, and where d is 0, 1, 2, 3 or 4; L A and L B are connected to one another with a cyclic silicon bridge, R′SiR′, where R′ are independently hydrocarbyl or substituted hydrocarbyl substiuents that are connected with each other to form a silacycle ring; each Q is labile hydrocarbyl or a substituted hydrocarbyl ligand; and b) blending the polymer with another polymer comprising olefin monomers having 2 to 30 carbon atoms to produce a polymer blend, wherein the amount of polymer a) in the blend is a minor amount of about 1% to about 50% by weight of the blend, and wherein a film extruded from said polymer blend has a haze, according to ASTM D-1003, that is less than a film extruded under identical conditions from said another polymer comprising olefin monomers having 2 to 30 carbon atoms alone.