From polyethylene waxes to HDPE using an alpha,alpha '-bis(arylimino)-2,3:5,6-bis(pentamethylene)pyridyl-chromium(III) chloride pre-catalyst in ethylene polymerisation
文献类型：期刊论文
| 作者 | Huang, CB; Du, SZ; Solan, GA; Sun, Y; Sun, WH
|
| 刊名 | DALTON TRANSACTIONS
 |
| 出版日期 | 2017-06-07 |
| 卷号 | 46期号:21页码:6948-6957 |
| ISSN号 | 1477-9226 |
| DOI | 10.1039/c7dt01077j |
| 英文摘要 | Five examples of alpha,alpha'-bis(arylimino)-2,3:5,6-bis(pentamethylene) pyridyl-chromium(III) chlorides (aryl = 2,6-Me2Ph Cr1, 2,6-Et2Ph Cr2, 2,6-i-Pr2Ph Cr3, 2,4,6-Me3Ph Cr4, 2,6-Et-2-4-MePh Cr5) have been synthesized by the one-pot template reaction of alpha,alpha'-dioxo-2,3:5,6-bis(pentamethylene)pyridine, CrCl3 center dot 6H(2)O and the corresponding aniline. The molecular structures of Cr1 and Cr4 reveal distorted octahedral geometries with the N,N,N-ligand adopting a mer-configuration. On activation with an aluminium alkyl co-catalyst, Cr1-Cr5 exhibited high catalytic activities in ethylene polymerization and showed outstanding thermal stability operating effectively at 80 degrees C with activities up to 1.49 x 10(7) g of PE (mol of Cr)(-1) h(-1). Significantly, the nature of the co-catalyst employed had a dramatic effect on the molecular weight of the polymeric material obtained. For example, using diethylaluminium chloride (Et2AlCl) in combination with Cr4 gave high density/high molecular weight polyethylene with broad molecular weight distributions (30.9-39.3). By contrast, using modified methylaluminoxane (MMAO), strictly linear polyethylene waxes of lower molecular weight and narrow molecular weight distribution (1.6-2.0) were obtained with vinyl end-groups. |
| 语种 | 英语 |
| WOS记录号 | WOS:000402550500015 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/41982]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Solan, GA (reprint author), Chinese Acad Sci, Inst Chem, Key Lab Engn Plast, Beijing 100190, Peoples R China. 2.Solan, GA (reprint author), Chinese Acad Sci, Inst Chem, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China. 3.Solan, GA (reprint author), Univ Leicester, Dept Chem, Univ Rd, Leicester LE1 7RH, Leics, England. |
| 推荐引用方式 GB/T 7714 | Huang, CB,Du, SZ,Solan, GA,et al. From polyethylene waxes to HDPE using an alpha,alpha '-bis(arylimino)-2,3:5,6-bis(pentamethylene)pyridyl-chromium(III) chloride pre-catalyst in ethylene polymerisation[J]. DALTON TRANSACTIONS,2017,46(21):6948-6957. |
| APA | Huang, CB,Du, SZ,Solan, GA,Sun, Y,&Sun, WH.(2017).From polyethylene waxes to HDPE using an alpha,alpha '-bis(arylimino)-2,3:5,6-bis(pentamethylene)pyridyl-chromium(III) chloride pre-catalyst in ethylene polymerisation.DALTON TRANSACTIONS,46(21),6948-6957. |
| MLA | Huang, CB,et al."From polyethylene waxes to HDPE using an alpha,alpha '-bis(arylimino)-2,3:5,6-bis(pentamethylene)pyridyl-chromium(III) chloride pre-catalyst in ethylene polymerisation".DALTON TRANSACTIONS 46.21(2017):6948-6957. |
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来源：化学研究所
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