Petroleum Processing and Petrochemicals ›› 2014, Vol. 45 ›› Issue (11): 38-43.

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ETHYLENE HOMOGENEOUS POLYMERIZATION CATALYZED BY NEW TYPE BUTANEDIONE TITANIUM COMPLEX

  

  • Received:2014-04-08 Revised:2014-05-21 Online:2014-11-12 Published:2014-10-28

Abstract: A new type double imine ligand was synthesized by the addition condensation reaction of butanedione carbonyl group and O-aminophenol amino. The butanedione o-aminophenol titanium complexe (titanium complex) was prepared by treatment of TiCl4 with the ligand. Activated by the methylaluminoxane (MAO), the performance of the complex for ethylene homopolymerization in toluene solvent was evaluated. The catalytic activity of the titanium complex reaches 1.53×106 g PE/(mol?h) at the reaction conditions: 40℃,0.8MPa,reaction time of 45 min and the mole ratio of [MAO]/[Ti-complex] of 4500, The high linearity and crystallinity PE product has a relative molecular weight higher than 4.5 x 105 and a high melting point (> 130 ℃).