烯烃聚合用二亚胺催化剂的研究进展  

Research progress of diimide catalysts for olefin polymerization

作　　者：王琪[1] 宋昊 刘振宇[1] Wang Qi;Song Hao;Liu Zhenyu(Research Institute of Maoming Petrochemical Branch Company,SINOPEC,Maoming 525011,China)

机构地区：[1]中国石油化工股份有限公司茂名石化分公司研究院,广东茂名525011

出　　处：《合成树脂及塑料》2024年第2期72-77,共6页China Synthetic Resin and Plastics

摘　　要：综述了近几年烯烃聚合用α-二亚胺催化剂的研究进展,聚焦于配体结构的修饰,包括空间效应和电子效应的调控策略,以及配体结构变化对催化剂活性和热稳定性的影响。调控α-二亚胺配体的轴向位阻可达到提高催化剂活性、热稳定性,聚合物相对分子质量,以及调节支化度的目的。在适当的空间位阻下,引入不同电子效应的取代基对配体进行结构修饰同样也可提高α-二亚胺催化剂的性能。The research progress ofα-diimide catalysts for olefin polymerization is reviewed,which focuses on the modification of ligand structures,including the control strategies of spatial and electronic effects,as well as the influence of ligand structure changes on the activity and thermal stability of catalysts.The regulation of axial steric hindrance ofα-diimide ligands can improve the activity and thermal stability of catalysts,relative molecular mass of polymers and regulate branching degree.Substituents with different electronic effects are introduced to modify the structure of ligands under appropriate steric hindrance,which can improve the performance ofα-diimide catalyst as well.

关 键 词：烯烃聚合 α-二亚胺催化剂 “链行走”机理 催化剂活性 热稳定性 

分 类 号：TQ325.1[化学工程—合成树脂塑料工业]