Ethylene polymerization and ethylene/hexene copolymerizaion with vandium catalysts bearing thiophenolphosphine ligands

doi:10.1007/s10118-013-1282-z

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	Ethylene polymerization and ethylene/hexene copolymerizaion with vandium catalysts bearing thiophenolphosphine ligands
	Zhang, Sen-wang; Li, Yan-guo; Lu, Ling-pan; Li, Yue-sheng
刊名	CHINESE JOURNAL OF POLYMER SCIENCE
	2013-06-01
卷号	31 期号:6 页码:885-893
关键词	Ziegler-natta Polymerization Vanadium Catalyst Polyethylene Copolymerization
ISSN号	0256-7679
DOI	10.1007/s10118-013-1282-z
英文摘要	Vanadium(III) complexes bearing thiophenol-phosphine ligands (2a-2b) (2-R-6-PPh2-C6H2S) VCl2(THF)(2) (2a: R = H; 2b: R = Me3Si) were prepared from VCl3(THF)(3) by treating with 1.0 equiv of the ligand in tetrahydrofuran in the presence of excess triethylamine. The two complexes were characterized by FTIR and mass spectra as well as elemental analyses. On activation with Et2AlCl, these complexes exhibited high catalytic activities (up to 22.1 kg PE/(mmol(V)center dot h center dot bar)) even at high temperature (70 A degrees C), and produced high molecular weight polymers with unimodal molecular weight distributions, indicating the polymerization took place in a single-site nature. This result may be attributed to benefits of introduction of second-row donor atoms for adjusting charge density of the vanadium centers. In addition, these complexes also exhibited high catalytic activities for ethylene/1-hexene copolymerization. Catalytic activity, comonomer incorporation and polymer molecular weight can be controlled in a wide range by the variation of catalyst structure and the reaction parameters such as Al/V molar ratio, comonomer feed concentration and polymerization reaction temperature.
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000317985500005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/46659]
专题	中国科学院化学研究所
通讯作者	Li, Yue-sheng
作者单位	Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Sen-wang,Li, Yan-guo,Lu, Ling-pan,et al. Ethylene polymerization and ethylene/hexene copolymerizaion with vandium catalysts bearing thiophenolphosphine ligands[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2013,31(6):885-893.
APA	Zhang, Sen-wang,Li, Yan-guo,Lu, Ling-pan,&Li, Yue-sheng.(2013).Ethylene polymerization and ethylene/hexene copolymerizaion with vandium catalysts bearing thiophenolphosphine ligands.CHINESE JOURNAL OF POLYMER SCIENCE,31(6),885-893.
MLA	Zhang, Sen-wang,et al."Ethylene polymerization and ethylene/hexene copolymerizaion with vandium catalysts bearing thiophenolphosphine ligands".CHINESE JOURNAL OF POLYMER SCIENCE 31.6(2013):885-893.