Homo- and Co-Polymerization of Ethylene with Highly Active Ti/Mg Bimetallic Complexes: Effect of crystallization conditions on structure and productivity

Abstract

Homo- and co-polymerization of ethylene were performed by using a catalyst system composed of recrystallized MgCl2 TiCl4 THF complex with AlEt3. The effect of crystallization conditions during the catalyst preparation on the chemical composition and physical structure of catalysts was discussed with the help of element analysis, IR spectroscopy, and X-ray powder diffraction. The variation caused by different crystallization conditions had considerable influences on the rate profiles of homo-and co-polymerization of ethylene.