首页> 外文期刊>Journal of Applied Polymer Science >Synthesis of atactic polypropylene: Propylene polymerization reactions with TiCl4-Al(C2H5)(2)Cl/Mg(C4H9)(2) catalyst
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Synthesis of atactic polypropylene: Propylene polymerization reactions with TiCl4-Al(C2H5)(2)Cl/Mg(C4H9)(2) catalyst

机译:atClatic聚丙烯的合成:用TiCl4-Al(C 2 H 5)(2)Cl / Mg(C4H9)(2)催化剂的丙烯聚合反应

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The Ziegler catalyst, a combination of TiCl4 and Al(C2H5)(2)Cl, is a very poor catalyst for propylene polymerization. However, the addition of Mg(C4H9)(2) to the Ziegler catalyst at a [Mg]:[Al] molar ratio < 0.5 leads to the formation of a potent catalyst system for homopolymerization of propylene. Polymers produced with the TiCl4-Al(C2H5)(2)Cl/Mg(C4H9)(2) catalyst are mostly atactic and amorphous, their minor partially crystalline isotactic components constitute merely 5-10% of the combined polymer material. Principal advantages of the TiCl4-Al(C2H5)(2)Cl/Mg(C4H9)(2) catalyst for the manufacture of atactic PP include high activity, low cost, and the ease of use: the catalyst is prepared in situ from three commercially available components. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47692.
机译:Ziegler催化剂,TiCl4和Al(C 2 H 5)(2)Cl的组合是丙烯聚合的催化剂非常差。 然而,在[Mg]的Ziegler催化剂中加入Ziegler催化剂的Mg(C 4 H 9)(2):[Al]摩尔比<0.5导致形成用于丙烯的均聚制的有效催化剂体系。 用TiCl4-Al(C 2 H 5)(2)Cl / Mg(2)Cl / Mg(2)催化剂制备的聚合物主要是attactic和无定形的,它们的次要部分结晶的全同立构组分仅为5-10%的组合聚合物材料。 用于制备Atactic PP的TiCl4-Al(C2H5)(2)Cl / Mg(2)催化剂的主要优点包括高活性,低成本和易用性:催化剂由三个原位制备 市售的部件。 (c)2019 Wiley期刊,Inc.J.Phill。 聚合物。 SCI。 2019,136,47692。

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