Ethylene Polymerization by the New Chromium Catalysts Based on Amino-Pyrrolide Ligands
文献类型：期刊论文
| 作者 | He LP ; Liu JY ; Pan L ; Wu JQ ; Xu BC ; Li YS |
| 刊名 | journal of polymer science part a-polymer chemistry
 |
| 出版日期 | 2009 |
| 卷号 | 47期号:3页码:713-721 |
| 关键词 | OLEFIN POLYMERIZATION TRIAZACYCLOHEXANE COMPLEXES TRIMERIZATION BEHAVIOR COPOLYMERIZATION OLIGOMERIZATION CHEMISTRY DISCOVERY OXIDE CR |
| ISSN号 | 0887-624x |
| 通讯作者 | li ys |
| 中文摘要 | a series of amino-pyrrolide ligands (1-4a) and their derivatives aminothiophene ligand (5a), amino-indole ligand (6a) were prepared. chromium catalysts, which were generated in situ by mixing the ligands with crcl3(thf)(3) in toluene, were tested for ethylene polymerization. the preliminary screening results revealed that the tridentate amino-pyrrolide ligands containing soft pendant donor, 3a, 4a/crcl3(thf)(3) systems displayed high catalytic activities towards ethylene polymerization in the presence of modified methyaluminoxane. the electronic and steric factors attached to the ligand backbone significantly affected both the catalyst activity and the polymer molecular weight. complex 4b was obtained by the reaction of crcl3(thf)(3) with one equivalent of the lithium salts of 4a, which was the most efficient ligand among the tested ones. the effect of polymerization parameters such as cocatalyst concentration, ethylene pressure, reaction temperature, and time on polymerization behavior were investigated in detail. the resulting polymer obtained by 4b display wax-like and possess linear structure, low molecular weight, and unimodal distribution. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000262931800019 |
| 公开日期 | 2010-05-27 |
| 源URL | [http://202.98.16.49/handle/322003/12469]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | He LP,Liu JY,Pan L,et al. Ethylene Polymerization by the New Chromium Catalysts Based on Amino-Pyrrolide Ligands[J]. journal of polymer science part a-polymer chemistry,2009,47(3):713-721. |
| APA | He LP,Liu JY,Pan L,Wu JQ,Xu BC,&Li YS.(2009).Ethylene Polymerization by the New Chromium Catalysts Based on Amino-Pyrrolide Ligands.journal of polymer science part a-polymer chemistry,47(3),713-721. |
| MLA | He LP,et al."Ethylene Polymerization by the New Chromium Catalysts Based on Amino-Pyrrolide Ligands".journal of polymer science part a-polymer chemistry 47.3(2009):713-721. |
入库方式： OAI收割
来源：长春应用化学研究所
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