Supported Transition Metal Bis(Phenolate) Complexes and Their Use as Catalysts for Olefin Polymerization
申请人:ExxonMobil Chemical Company - Law Technology
公开号:US20200255561A1
公开(公告)日:2020-08-13
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, R
1
, R
2
, R
3
, R
4
, R
1′
, R
2′
, R
3′
, R
4′
, A
1
, A
1′
, A
3
A
2
, and A
2′
A
3′
are as defined herein, where A
1
QA
1′
are part of a heterocyclic Lewis base containing 4 to 40 non-hydrogen atoms that links A
2
to A
2′
via a 3-atom bridge with Q being the central atom of the 3-atom bridge.
该发明涉及一种过渡金属配合物的支持催化剂组合物,该配合物包括一种双阴离子、三牙配体,其具有一个中性杂环路易斯碱和两个酚醇供体,其中该三牙配体与金属中心配位形成两个八元环。优选的双(酚醇)配合物由式(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'是包含4至40个非氢原子的杂环路易斯碱的一部分,通过Q作为3原子桥连接A2和A2',形成A2到A2'的连接。