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A new method for the activation of crystalline magnesium chloride by polyethylene glycol was described.Polyethylene glycol could solubilize crystalline magnesium chloride.The resulting solution was used for the preparation of Ziegler-Natta propylene polymerization catalysts.These catalysts are highly active and stereospecific.The relationship between the catalytic activity and the Al/Ti ratio was studied in detail.
A new method for the activation of crystalline magnesium chloride by polyethylene glycol was described. Polyethylene glycol could solubilize crystalline magnesium chloride. The solution was used for the preparation of Ziegler-Natta propylene polymerization catalysts. These catalysts are highly active and stereospecific.The relationship between the catalytic activity and the Al / Ti ratio was studied in detail.