【作者】 魏文平； 张丹枫； 黄葆同；

【Author】 Wei Wenping, Zhang Danfeng, Huang Baotong School of Material Science and Technology, East China University of Science and Technology, Shanghai 200237, Email:zdf93102@ecust.edu.cn Changchu Institute of Applied Chemistry, Chinese Academy of Sciences,Changchun 130022

【机构】 华东理工大学材料科学与工程学院； 中科院长春应用化学研究所；

【摘要】 基于前已得到的研究结果,吡啶烷氧配体与前过波金属形成的催化体系对乙烯聚合贝有良好的催化活性,在本研究中,我们则采用微波合成法制备了一系列(口恶)唑啉烷氧配体(1-4)。以这些配体与Ti就地生成配合物,在助催化剂MAO的引发下,对乙烯聚合显示出较高的催化活性。通过对一系列不同的Al/Ti比,温度及配体/Ti比的试验,得到了最佳的聚合条件。其中,配体4与Ti形成的催化体系对乙烯聚合有较高的催化活性。1.R1=R2=CH3,R3=R4=CH32.R1=R2=CH3,R3=R4=Ph3.R1=CH3,R2=H,R3=R4=CH3~~更多还原

【Abstract】 Our previous research results, ethylene polymerization by pyridine alkoxide titanium complexes, showed high activity. In the present work, oxazoline alkoxide ligands (1 -4) were prepared under microwave irradiation. Activities of catalytic systems formed by these ligands and TiCI4, activated by MAO, for in situ ethylene polymerization were investigated. The optimum conditions of the polymerization were studied. Ligand 4 shows high activity in ethylene polymerization.更多还原