Disclosed herein is a group IV transition metal catalyst for producing an ethylene homopolymer or an ethylene-olefin copolymers, having high catalytic activity, which includes a cyclopentadiene derivative and one or more anionic ligands having an aryl group substituted with an aryl derivative at an ortho-position thereof around a transition metal, the ligands not being crosslinked to each other, a catalyst system including the group IV transition metal catalyst and an aluminoxane cocatalyst or a boron compound cocatalyst, and a method of producing ethylene homopolymers or ethylene-olefin copolymers using the catalyst system.
本文披露了一种用于生产
乙烯均聚物或
乙烯-烯烃共聚物的IV族过渡
金属催化剂,具有高催化活性,包括一种
环戊二烯衍
生物和一个或多个带有芳基取代物的阴离子
配体,其在过渡
金属周围的邻位处与芳基衍
生物进行取代,这些
配体之间没有交联,一个包括IV族过渡
金属催化剂和氧化铝烷共催化剂或
硼化合物共催化剂的催化剂系统,以及使用该催化剂系统生产
乙烯均聚物或
乙烯-烯烃共聚物的方法。