Ethene homo- and ethene/propene copolymerization using a MAO activated cyclopentadienyl-amido half-sandwich complex

摘要

The half-sandwich complex [{eta (5):sigma -C5H4(CH2)(2)NEt}Ti(NEt2)(2)] was synthesized and characterized by means of IR-spectroscopy. This compound was activated by methylaluminoxane (MAO) for homogeneous ethene polymerization and ethene/propene copolymerization. The effect of the Al/Ti molar ratio on the polymerization activity, the molecular masses, and the thermal properties of the polymers was studied. The molecular weight distributions and the DSC measurements of the copolymers show the presence of two different catalytic sites. [References: 15]