Catalyst for Olefin Polymerization and Preparation Thereof and Polymerization Process
申请人:Wang Licai
公开号:US20080161513A1
公开(公告)日:2008-07-03
The catalyst for olefin polymerization contains three components A, B and C. The component A is a solid catalyst containing titanium, magnesium, chlorine element and an internal electron donor, the internal electron donor consists of 1,4-diether [2,2′-dialkoxy-1,1′-biphenyl, 2,2′-dialkoxy-1,1′-binaphthalene, 10,10′-dialkoxy-9,9-biphenanthrene] and organic acid ester or 1,3-diether [9,9-bis(methoxymethyl)fluorine, 2,2-dialky 1-1,3-dimethoxypropane]; the component B is an organoaluminum compound; the component C is external electron donor-organic silicon compound or the 1,4 aromatic diether. The catalyst has high catalytic activity, and can be adjusted in the range from 40,000 to 150,000 gPP/gCat when used in propylene polymerization. The polymer made therefrom has isotactivity of 80 to 99 percent and the molecular weight distribution can be adjusted in a wide range. The invention provides a novel method for preparing the 1,4 aromatic diether.
烯烃聚合反应的催化剂包含三个组分A、B和C。组分A是一种固体催化剂,包含钛、镁、氯元素和内部电子给体。内部电子给体由1,4-二醚[2,2'-二烷氧基-1,1'-联苯、2,2'-二烷氧基-1,1'-联萘、10,10'-二烷氧基-9,9-联苯并]和有机酸酯或1,3-二醚[9,9-双(甲氧基甲基)氟、2,2-二烷基-1,3-二甲氧基丙烷]组成;组分B是一种有机铝化合物;组分C是外部电子给体-有机硅化合物或1,4-芳香二醚。该催化剂具有高催化活性,在丙烯聚合中使用时,可以在40,000至150,000 gPP/gCat的范围内调整。由此制成的聚合物具有80至99%的同构活性,分子量分布范围可以广泛调整。本发明提供了一种制备1,4-芳香二醚的新方法。