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首页> 外文期刊>Macromolecular symposia >External Donor Induced Direct Contact Effects onMg(OC_2H_5)_2-Based Ziegler-Natta Catalysts forPropylene Polymerization
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External Donor Induced Direct Contact Effects onMg(OC_2H_5)_2-Based Ziegler-Natta Catalysts forPropylene Polymerization

机译：外部给体对基于Mg（OC_2H_5）_2的Ziegler-Natta丙烯聚合催化剂的直接接触作用

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摘要

Effects of external donor induced direct contact without alkylaluminumwere studied for Ziegler-Natta catalysts containing monoester and diester as internaldonors on the catalytic performances such as activity and stereoselectivity.Traditional slurry polymerizations were carried out for rather short period afterdirect contact for a variety of time. GC analysis was also performed to observereplacement phenomena of donors during direct contact. It was postulated that thedifferent performances of the catalysts were greatly affected by the pair of internaland external donors.
机译：研究了含有单酯和二酯作为内给体的Ziegler-Natta催化剂在没有烷基铝的情况下外部给体诱导的直接接触对催化性能（如活性和立体选择性）的影响。在直接接触后短时间内进行了传统的淤浆聚合反应。还对直接接触过程中供体的观察者置换现象进行了GC分析。据推测，催化剂的不同性能受到内部和外部供体对的极大影响。

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