申请人:Changchun Institute of Applied Chemistry Chinese Academy of Science
公开号:US06800774B2
公开(公告)日:2004-10-05
The present invention provides a polynuclear &agr;-diimine Ni(II) complex used as the precursor of the catalyst in polymerizing polyolefine, represented by the following formula:
wherein M is Ni; X is Cl or Br; m and n is independently an integer from 0 to 100, respectively; R1 and R2 is the same or different, and is selected from the group consisting of H, methyl, ethyl, isopropyl and tert-butyl; Y is CR3R4, wherein R3 and R4 is the same or different, and is selected from the group consisting of H, methyl, ethyl, propyl, butyl and phenyl, or R3 and R4 forming a cyclic alkyl group; R5 and R6 is the same or different, and is selected from the group consisting of methyl, ethyl, propyl and heterocyclic group; Q is a cyclic divalent residual group of the following formula or a mixture thereof:
The compound of this invention can be used to catalyze the polymerization of ethylene and to prepare high molecular weight branched polyethylene.
本发明提供了一种多核&agr;-二亚胺Ni(II)配合物,用作聚合聚烯烃催化剂的前体,其表示如下式:其中M为Ni;X为Cl或Br;m和n分别独立地为0至100之间的整数;R1和R2相同或不同,选自H、甲基、乙基、异丙基和叔丁基组成的群;Y为CR3R4,其中R3和R4相同或不同,选自H、甲基、乙基、丙基、丁基和苯基,或者R3和R4形成一个环状烷基基团;R5和R6相同或不同,选自甲基、乙基、丙基和杂环基团;Q为以下式的环状二价残基或其混合物:本发明的化合物可用于催化乙烯的聚合,制备高分子量支化聚乙烯。