Monocyclopentadienyl binuclear complexes, ligands used in their preparaion, catalyst systems comprising them and olefin polymerisation process
申请人:Basell Polyolefine GmbH
公开号:EP2606970A1
公开(公告)日:2013-06-26
A complex of formula (I)
wherein R1 is a hydrogen atom or C1-C40 hydrocarbon radical Ra and Rb equal to or different from each other, are hydrogen atoms or C1-C40 hydrocarbon radical or Ra and Rb can be joined to form a from 4 to 7 membered ring, M is selected from titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum or tungsten; X, equal to or different from each other, are a hydrogen atom, a halogen atom, a R, OR, OSO2CF3, OCOR, SR, NR2 or PR2 group where R is as defined in the claims; Z is a divalent bridging group; T2 is a radical comprising at least one uncharged donor containing at least one atom of group 15 or 16 of the Periodic Table; L is a divalent bridging group. The invention also relates to a catalyst system comprising complex (I), an alumoxane or a compound capable of forming an alkyl metallocene cation, and optionally an oranoaluminium compound. The catalyst system is employed in the polymerisation of one or more α-olefins. The ligands making up the complex (I) are also claimed.
一种化学式(I)的复合物,其中R1是氢原子或C1-C40烃基Ra,而Rb则等于或不同于彼此,是氢原子或C1-C40烃基,或者Ra和Rb可以结合形成由4到7个成员组成的环,M选自钛、锆、铪、钒、铌、钽、铬、钼或钨;X相等或不同,是氢原子、卤素原子、R、OR、OSO2CF3、OCOR、SR、NR2或PR2基团,其中R如权利要求中所定义;Z是二价桥接基团;T2是一个基团,包括至少一个非带电的供体,其中至少有一个原子属于周期表的15或16族元素;L是二价桥接基团。本发明还涉及包括复合物(I)、铝氧化物或能够形成烷基金属茂阳离子的化合物,以及可选的有机铝化合物的催化剂体系。该催化剂体系用于聚合一种或多种α-烯烃。本发明还要求组成复合物(I)的配体。