Branched-PE/i-PP reactor blends prepared through ethylene gas-phase polymerization catalyzed by α-diimine nickel supported on iPP particles

Branched-PE/i-PP reactor blends that contain above 20 wt% of the branched PE were prepared through in-situ ethylene gas-phase polymerization catalyzed by α-diimine nickel catalysts ([ArN=C(CH3)-C(CH 3)=NAr]NiCl2, Ar = 2,6-dimethylphenyl) impregnated in iPP particles. The catalytic activities, the structure and properties of the in-situ blends were investigated and discussed. The activity results from the supported gas-phase polymerization were also compared to those from its unsupported slurry counterpart. © 2006 Elsevier B.V. All rights reserved.