论文部分内容阅读
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.