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Cyclic organosilicon compounds as electron donors in Ziegler-Natta catalyst systems for making propylene polymers with high melt fluidity
Cyclic organosilicon compounds as electron donors in Ziegler-Natta catalyst systems for making propylene polymers with high melt fluidity
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机译:环状有机硅化合物作为齐格勒-纳塔催化剂体系中的电子给体,用于制备高熔体流动性的丙烯聚合物
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摘要
Cyclic organosilicon compounds having a structure represented by the general formula and a method for using thereof as a component of catalysts for producing propylene polymer having a very high melt-flowability are disclosed. The cyclic organosilicon compounds are employed as external electron donors in Ziegler-Natta catalyst systems to dramatically improve the hydrogen response, and therefore the catalyst systems can be used to prepare polymer having high melt-flowability and high isotacticity at high yield.
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