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W. Ochędzan-Siodłak, M. Nowakowska

A new supported zirconocene catalyst for ethylene polymerization. RAPID COMMUNICATION (in English)

Polimery 1998, No 11-12, 747

DOI: dx.doi.org/10.14314/polimery.1998.747


The catalytic activity of Cp2ZrCl2 supported on MgCl2(THF)2 with MAO as a cocatalyst, was investigated in low-pressure polymerization of ethylene. This catalyst system was found to be active [110 kg PE/(g Z·h)] and stable during the polymerization process. The PE obtainedhas a Barrow molecular weight distribution (MWD); its molecular weight (Mw) was about 200 000. The kinetic investigation of the polymerization process revealed 12% of the zirconium atoms to be involved in the formation of catalytic active sites.

Keywords: low-pressure polymerization of ethylene, supported zirconocene catalyst, catalytic activity, molecular weight of polyethylene

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