Investigation of polymerization conditions on polyethylene properties Synthesized by Bis-2PhIndZrCl2 Metallocene Catalyst

Bis-2PhIndZrCl2 was synthesized by indirect method simply and quantitatively. The performance of the catalyst in ethylene polymerization was investigated using different polymerization conditions. The activity of the catalyst went up as the Al:Zr molar ratio increased to 2333:1 following to reduction by using higher Al/Zr ratio. The maximum activity of the catalyst was obtained at polymerization temperature of 60 oC. The viscosity average molecular weight (Mv) of the polymer decreased as the polymerization temperature increased; on the other hand the reaction pressure increased the Mv of the polymer and the catalyst activity, as well.

کلیدواژه ها:

Metallocene catalyst ، polyethylene ، molecular weight ، polymerization condition ، activity