Concerted Steric and Electronic Strategy in Thermostable Salicylaldiminato Nickel Catalysts for Ethylene(Co)polymerization  

作　　者：Hong-Yu Ji Hong-Liang Mu Chun-Feng Tang Yu-Xing Zhang Yue Chi Zhong-Bao Jian 

机构地区：[1]Key Laboratory of Advanced Structural Materials,Ministry of Education,School of Materials Science and Engineering,Changchun University of Technology,Changchun 130012,China [2]State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China

出　　处：《Chinese Journal of Polymer Science》2024年第8期1085-1092,共8页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(Nos.22122110 and U23B6011 for Z.J.);the Jilin Provincial Science and Technology Department Program(No.20210101070JC for Y.C.)。

摘　　要：Olefin polymerization is one of the most im portant chemical reactions in industry.This work presents a strategy that emphasizes the synergistic meta/poro-steric hindrance of N-aryl groups and electronic effects in newly synthesized neutral salicylaldiminato nickel catalysts.These nickel(Ⅱ)catalysts exhibit exceptional thermostability,ranging from 30℃to 130℃,demonstrating enhanced catalytic activities and broadly regulated polyethylene molecular weights(3-341 kg·mol^(-1))and controlled polymer branch density(2-102 brs/1000C).The preferred catalyst Ni3 with concerted steric and electronic effects enables the production of solid-state semi-crystalline polyethylene materials at temperatures below 90℃.Notably,Ni3 exhibits an impressive tolerance of 110℃and can withstand even the challenging polymerization temperature of 130℃,leading to the production of polyethylene wax and oil.Also,functionalized polyethylene is produced.

关 键 词：POLYOLEFIN Salicylaldiminato ligand Nickel catalyst Oil WAX 

分 类 号：TQ325.12[化学工程—合成树脂塑料工业]