乙烯聚合水杨醛亚胺锆配合物的合成、结构和固定化

摘要

Two zirconium complexes,Bis[N-(3-tert-butylsalicylidene)allylaminato]zirconium dichloride(4)and Bis [N-(3-tert-butylsalicylidene)-iso-butylaminato]zirconium dichloride(5),were prepared and characterized.The molecular structure of complex 4 has been determined by X-ray crystallographic analysis.The corresponding polymer-incorporated zirconium catalyst 6 was obtained by the co-polymerization of the olefin group of catalyst 4 with styrene in the presence of a radical initiator.All catalysts (4,5 and 6)have been investigated for ethylene Polymerization.These catalysts exhibit high activity up to 3.7×106gPE·(mol Zr)-1·h-1 in the presence of modified methylaluminoxane(MMAO)as a co-catalyst.%合成和表征了2个锆的配合物:Bis[N-(3-tert-butylsalicylidene)allylaminato]zirconium dichloride(4)和Bis[N-(3-tert-butylsalicylidene)-iso-butylaminato]zirconium dichloride(5),并且得到了配合物4的单晶结构.在引发剂的作用下,配合物4和苯乙烯进行自由基共聚,得到高分子化催化剂6.在助催化剂MMAO的存在下,4,5和6都可以催化乙烯聚合.最高活性为3.7×106g PE·(mol Zr)-1·h-1.