文献类型：期刊文献

英文题名：Syntheses of titanium(IV) complexes with mono-Cp and Schiff base ligands and their catalytic activities for ethylene polymerization and ethylene/1-hexene copolymerization

作者：Huang, Jiling[1]; Lian, Bing[1]; Qian, Yanlong[1]; Zhou, Weizhen[1]; Chen, Wei[1]; Zheng, Gang[1]

机构：[1]E China Univ Sci & Technol, Organomet Chem Lab, Shanghai 200237, Peoples R China;[2]SINOPEC, Res Inst Petr Proc, Beijing 100083, Peoples R China

年份：2002

卷号：35

期号：13

起止页码：4871

外文期刊名：MACROMOLECULES

收录：;EI(收录号：2002287008905);WOS:【SCI-EXPANDED(收录号:WOS:000176215500007)】；

语种：英文

外文关键词：Catalysis - Characterization - Copolymerization - Ethylene - Infrared spectroscopy - Mass spectrometry - Molecular weight distribution - Nuclear magnetic resonance spectroscopy - Synthesis (chemical)

摘要：The syntheses of two kinds of titanium(IV) complexes with mono-Cp and Schiff base as the mixed ligands are reported. These complexes are synthesized by the reaction of CpTiCl3 with the Schiff base lithium salt, and they are characterized by H-1 NMR, EA, IR, and MS. When activated by excess methylaluminoxane (MAO), all complexes are active for ethylene polymerization and ethylene/1-hexene copolymerization. 1/MAO shows 3 times as active as complex 7 (Cp2TiCl2) to the ethylene/1-hexene copolymerization, and the molecular weight of the copolymer obtained by 1/MAO is almost 2 times that of complex 3 and 5 times that of complex 7. Complex 1 combines the advantages of non-metallocene (complex 3) and metallocene (complex 7) to the ethylene polymerization and ethylene/1-hexene copolymerization.