文章摘要
芳氧亚胺锆络合物的合成及其催化乙烯聚合
Synthesis of Bis(phenoxy-imine) Zirconium Complex and its Application in Ethylene Polymerization
投稿时间:2017-09-21  修订日期:2018-01-25
DOI:
中文关键词: 芳氧亚胺  锆络合物  乙烯聚合  超高分子量聚乙烯
英文关键词: Phenoxy-imine  zirconium complex  ethylene polymerization  ultra-high molecular weight polyethylene
基金项目:上海浦江人才计划
作者单位E-mail
王原 上海化工研究院有限公司 wangrecoba@163.com 
郑浩 上海化工研究院有限公司  
叶晓峰 上海化工研究院有限公司  
罗勇 上海化工研究院有限公司 real-luoyong@hotmail.com 
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中文摘要:
      合成了水杨醛亚胺配体1和芳氧基亚胺二氯化锆络合物2,用MS、1H NMR和13C NMR表征了配体及络合物。在甲基铝氧烷(MAO)助催化下,2成功催化乙烯聚合。在50 oC、0.9 MPa乙烯压力,2在甲苯中的催化活性为53.5 kg-PE/mmol.Zr.h,所得聚合物为超高分子量聚乙烯,粘均分子量达3.3 x 106 g/mol。当使用正己烷作溶剂时,催化所得聚合物分子量提高至4.1 x 106 g/mol。
英文摘要:
      Salicylaldehyde imine ligand (1) and bis(phenoxy-imine) zirconium dichloride complex (2) have been synthesized. Both ligand and complex were characterized by mass spectrum, 1H NMR and 13C NMR. In the presence of MAO as a cocatalyst, the complex 2 was capable to catalyze ethylene polymerization. 2 displayed ethylene polymerization activity of 53.5 kg of PE/mmol of Zr.h at 50 oC and 0.9 MPa pressure in toluene, resulting in ultra-high molecular weight polyethylene with a viscosity average molecular weight value of 3.3x106 g/mol. The introduction of n-hexane as reaction solvent could further increase the molecular weight of obtained polymer to 4.1x106 g/mol.
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