Highly active ethylene polymerization and copolymerization with norbornene using bis(imino-indolide) titanium dichloride-MAO system
文献类型：期刊论文
| 作者 | Zuo, Weiwei; Sun, Wen-Hua ; Zhang, Shu; Hao, Peng; Shiga, Akinobu
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| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2007-08-01 |
| 卷号 | 45期号:15页码:3415-3430 |
| 关键词 | Addition Polymerization Cationic Polymerization Copolymerization Ethylene Polymerization Imino-indolide Norbornene Polyethylene (Pe) Titanium |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.22094 |
| 英文摘要 | A catalytic system of new titanium complexes with methylaluminoxane (MAO) was found to effectively polymerize ethylene for high molecular weight polyethylene as well as highly active copolymerization of ethylene and norbornene. The bis (imino-indolide)titanium dichlorides (L2TiCl2, 1-5), were prepared by the reaction of N-((3-chloro-1H-indol-2-yl)methylene)benzenamines with TiCl4, and characterized by elemental analysis, H-1 and C-13 NMR spectroscopy. The solid-state structures of I and 4 were determined by X-ray diffraction analysis to reveal the six-coordinated distorted octahedral geometry around the titanium atom with a pair of chlorides and ligands in cis-forms. Upon activation by MAO, the complexes showed high activity for homopolymerization of ethylene and copolymerization of ethylene and norbornene. A positive 11 comonomer effect" was observed for copolymerization of ethylene and norbornene. Both experimental observations and paired interaction orbital (PIO) calculations indicated that the titanium complexes with electron-withdrawing groups in ligands performed higher catalytic activities than those possessing electron-donating groups. Relying on different complexes and reaction conditions, the resultant polyethylenes had the molecular weights Mw in the range of 200-2800 kg/mol. The influences on both catalytic activity and polyethylene molecular weights have been carefully checked with the nature of complexes and reaction conditions. (C) 2007 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000248021700025 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62755]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Sun, Wen-Hua |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Natl Lab Mol Sci, Beijing 100080, Peoples R China 2.LUMMOX, Res Lab, Tsukuba, Ibaraki 3050032, Japan |
| 推荐引用方式 GB/T 7714 | Zuo, Weiwei,Sun, Wen-Hua,Zhang, Shu,et al. Highly active ethylene polymerization and copolymerization with norbornene using bis(imino-indolide) titanium dichloride-MAO system[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2007,45(15):3415-3430. |
| APA | Zuo, Weiwei,Sun, Wen-Hua,Zhang, Shu,Hao, Peng,&Shiga, Akinobu.(2007).Highly active ethylene polymerization and copolymerization with norbornene using bis(imino-indolide) titanium dichloride-MAO system.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,45(15),3415-3430. |
| MLA | Zuo, Weiwei,et al."Highly active ethylene polymerization and copolymerization with norbornene using bis(imino-indolide) titanium dichloride-MAO system".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 45.15(2007):3415-3430. |
入库方式： OAI收割
来源：化学研究所
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