Supported transition metal bis(phenolate) complexes and their use as catalysts for olefin polymerization
申请人:ExxonMobil Chemical Patents Inc.
公开号:US11225539B2
公开(公告)日:2022-01-18
This invention relates to supported catalyst compositions of transition metal complexes of a dianionic, tridentate ligand that features a central neutral heterocyclic Lewis base and two phenolate donors, where the tridentate ligand coordinates to the metal center to form two eight-membered rings. Preferably the bis(phenolate) complexes are represented by Formula (I):
where M, L, X, m, n, E, E′, Q, R1, R2, R3, R4, R1′, R2′, R3′, R4′, A1, A1′, A3A2, and A2′A3′ are as defined herein, where A1QA1′ are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A2 to A2′ via a 3-atom bridge with Q being the central atom of the 3-atom bridge.
本发明涉及二阴离子三叉
配体的过渡
金属络合物的支撑催化剂组合物,该二阴离子三叉
配体具有一个中心中性杂环路易斯碱和两个
苯酚供体,其中三叉
配体与
金属中心配位形成两个八元环。双(
苯酚)配合物最好用式 (I) 表示:
其中 M、L、X、m、n、E、E′、Q、R1、R2、R3、R4、R1′、R2′、R3′、R4′、A1、A1′、A3A2 和 A2′A3′ 如本文所定义、其中A1QA1′是含有4至40个非氢原子的杂环路易斯碱的一部分,该杂环路易斯碱通过3原子桥将A2和A2′连接起来,Q是3原子桥的中心原子。