Synthesis of 7-Arylimino-6,6-dimethylcyclopentapyridyl Nickel Complexes and Their Behavior Toward the Ethylene Polymerization

摘要：

Studies of late-transition metal nickel complexes pre-catalysts in ethylene polymerization have seen a significant rise in the emergence of α-diiminonickel complex precatalysts.1 Modifications of existing α-diiminonickel complexes have been focused towards higher activities of the catalytic systems and better properties of the obtained polyethylenes,2 meanwhile alternative models of nickel pre-catalysts have also been developed including 8-arylimino-5,6,7-trihydroquinolylnickel3 and 9-arylimino-5,6,7,8-tetrahydrocycloheptabpyridlynickel,4 performing high activities toward ethylene polymerization in all cases, and can distinctively improve the catalytic performance and the properties of the obtained polyethylenes by finely tuning the framework backbones.The success of these models inspired us to synthesize the 7-arylimino-6,6-dimethylcyclopentapyridine derivatives and the corresponding nickel complexes.Upon activation with either methylaluminoxane (MAO) or modified methylaluminoxane (MMAO), all nickel complexes showed high activities toward ethylene polymerization;the obtained polyethylene possessed low molecular weight and narrow polydispersity.

作者: Youfu Zhang Fang Huang Xinquan Hu Wen-Hua Sun

作者单位: College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014,China;Key Labora College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014,China Key Laboratory of Engineering Plastics, Institute of Chemistry, Chinese Academy of Sciences, Beijing

会议类型: 国际会议

会议名称: 9th International Symposium on High-Tech Polymer Materials(第9届国际高技术高分子材料学术会议)(HTPM-9)

会议地点: 郑州

会议语种:英文

页码: 109-109

在线出版日期: 2016-07-11（万方平台首次上网日期，不代表论文的发表时间）