Polymer Bulletin, Vol.59, No.5, 629-636, 2007
Synthesis of (C5H5)(2)Zr(O2C)CH3 and (C5H5)(2)Zr(O2C)CH2CH3 for olefin polymerization
(C5H5)(2)Zr(O2C)CH3 and (C5H5)(2)Zr(O2C)CH2CH3 complexes were synthesized, characterized and activated with MAO for ethylene polymerization. The highest catalytic activity was achieved at Al/Zr molar ratio of 3000 for both systems. The effects of the size of the R group in the carboxylate ligands, the Al/Zr molar ratio and reaction temperature on the catalytic activity and polymer properties were studied and discussed.