Aromatic Substituted Group 4 Metallocene Catalysts for the Polymerization of α-Olefins
作者:Patrick Foster、James C. W. Chien、Marvin D. Rausch
DOI:10.1021/om960519x
日期:1996.11.12
Six new group4metallocene complexes were synthesized as precursors for the polymerization of α-olefins. The phenyl-substituted precursors 2b−4b when activated by methylaluminoxane (MAO) were highly active for the polymerization of ethylene but exhibited no activity for the polymerization of propylene. Bis(2-methylbenz[e]indenyl)zirconium dichloride (5b) was activated with both MAO and triphenylcarbenium
合成了六个新的第4组茂金属配合物,作为α-烯烃聚合的前体。当被甲基铝氧烷(MAO)活化时,苯基取代的前体2b - 4b对乙烯的聚合具有高活性,但对丙烯的聚合则没有活性。双(2-甲基苯并[ e ]茚基)二氯化锆(5b)被MAO和三苯基碳四(五氟苯基)硼酸酯(三苯甲基)/三异丁基铝活化,其分子量根据聚合温度而变化。与锆类似物5b相比,钛前体6b对乙烯的活性较低。 当被MAO或三苯甲基活化时,对丙烯几乎没有活性。