Ethene／norbornene copolymerization byMe2Si（3—^tertBuCp）（N^tertBu）TiCl2／MAO—catalyst

摘要

Ethene/norbomene copolymerization by the catalyat system [Me2Si(3-^tertBuCp)(N^tertBu)]TiCl2/MAO was investigated in detail at 30℃,60℃,and 90℃,A mass flow controller was used in this work to ob-tain kinetic data and investigate temperature''''''''s effects on activity, norbomene incorporation,copolymerization parameter,microgtructure,glass transition temperature,and molar masses were described.High copolymer-izstion values rE and high altemation are determined.The number of isotactic altemating sequences is much higher than that of the syndiotactic altemating sequences.