IONIZATION OF MGCL2 DURING THE FORMATION OF ALPHA-OLEFIN POLYMERIZATION CATALYST

The examination of the reaction between [MgCl2(THF)(2)], TiCl4(3), AlC l3, AlEt(3), AlEt(2)Cl and the synthesis and isolation of compounds as crystals and resolution of their structure by the X-ray method were t he subject of our study. It was expected that these investigations wou ld help to understand the behaviour of MgCl2 towards the transition me tal and furnish useful relationships to the structure of catalyst acti ve center and to the polymerization mechanism in TiCl4(3)/MgCl2/AlEt(3 ) system. Our studies have revealed that the main difference between t he first and higher generations of Ziegler-Natta catalysts is only the number of active centers.