Abstract
AbstractMiddle‐range n‐alkyl chlorides are the most suitable components among a variety of tested alkyl halides in the preparation process of the highly active Ti‐Mg catalyst MTKST. A material balance of the initial components RCl, THF and CCl4 revealed the formation of oligomers, chloro‐containing telomers and poly‐THF apart from low‐molecular side products. The former are important modifiers of the suspension catalyst and exert a positive influence on catalyst activity and polymer properties, as was shown in the polymerization of ethylene. Schlenk equilibrium and extent of Wurtz type coupling in the Grignard synthesis step, which have been evaluated by titration of RMg bonds and Cl analysis of both the liquid and solid phase of the catalyst, predetermine the quality of the catalyst being formed.
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