Macromolecular Rapid Communications, Vol.17, No.5, 325-331, 1996
Polymerization and copolymerization of ethene initiated with disiloxane-bridged bis cyclopentadienyl zirconium complexes and methylaluminoxane
The disiloxane-bridged zirconocene complexes, tetramethyldisiloxanediylbis(cyclopentadienyl)zirconium dichloride and tetramethyldisiloxanediylbis(cyclopentadienyl)dimethylzirconium initiate the homopolymerization of ethene as well as the copolymerization of ethene and alpha-olefin with a modified methylaluminoxane as cocatalyst. The catalyst systems give reasonable activity but the molecular weight of polyethene decreases drastically with increasing polymerization temperature.