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Ethylene Polymerization by the Chromium Catalysts Based on Bidentate [O, P=O] or [S, P] Ligands
He, Li-Peng1,2; Mu, Hong-Liang1,2; Li, Bai-Xiang1; Li, Yue-Sheng1
2010-01-15
Source PublicationJOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
ISSN0887-624X
Volume48Issue:2Pages:311-319
AbstractNovel chromium catalysts based on bidentate phenoxy-phosphinoyl (HO-2R(1)-4R(2)-6(Ph(2)P=O)C(6)H(2): R(1) = R(2) = H, 3a; R(1) = tBu, R(2) = H, 3b; R(1) = R(2) = tBu, 3c; R(1) = R(2) = cumyl, 3d; R(1) = anthracenyl, R(2) = H, 3e) and thiophenol-phosphine (HS-2R(1)-4R(2)-6(Ph(2)P)C(6)H(2): R(1) = R(2) = H, 4a; R(1) = SiMe(3), R(2) = H, 4b) were prepared and characterized. Treatment with modified methyaluminoxane, these catalysts displayed moderate to high-catalytic activities for ethylene polymerization. The activities of them were higher than those of the corresponding catalysts based on bidentate phenoxy-phosphine ligands. Both the coordinated donors and the ortho-substituent of the ligands played an important role in improving catalytic activity. The effects of reaction parameters, such as cocatalyst and Al/Cr molar ratio as well as reaction temperature, on ethylene polymerization behaviors were investigated in detail for two favorable catalytic systems, 3b/CrCl(3)(thf)(3) and 4b/CrCl(3)(thf)(3). Catalyst 4b/CrCl(3)(thf)(3) displayed higher catalytic activity and better temperature tolerance for ethylene polymerization than 3b/CrCl(3)(thf)(3). (C) 2009 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 48: 311-319, 2010
KeywordCatalysis Polyolefins Ziegler-natta Polymerization
DOI10.1002/pola.23785
Indexed BySCI
Language英语
WOS IDWOS:000273581700005
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/70504
Collection中国科学院化学研究所
Corresponding AuthorLi, Yue-Sheng
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Changchun Branch, Changchun 130022, Peoples R China
Recommended Citation
GB/T 7714
He, Li-Peng,Mu, Hong-Liang,Li, Bai-Xiang,et al. Ethylene Polymerization by the Chromium Catalysts Based on Bidentate [O, P=O] or [S, P] Ligands[J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2010,48(2):311-319.
APA He, Li-Peng,Mu, Hong-Liang,Li, Bai-Xiang,&Li, Yue-Sheng.(2010).Ethylene Polymerization by the Chromium Catalysts Based on Bidentate [O, P=O] or [S, P] Ligands.JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,48(2),311-319.
MLA He, Li-Peng,et al."Ethylene Polymerization by the Chromium Catalysts Based on Bidentate [O, P=O] or [S, P] Ligands".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 48.2(2010):311-319.
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