Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands:   Synthesis, Characterization, and Ethylene (Co)polymerization

doi:10.1021/ma300384w

CORC > 北京大学 > 化学与分子工程学院

	Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization
	Han, Shuliang ; Yao, Erdong ; Qin, Wei ; Zhang, Shaofei ; Ma, Yuguo
刊名	macromolecules
	2012
关键词	IMINE CHELATE LIGANDS OLEFIN POLYMERIZATION CATALYSIS COMONOMER ENCHAINMENT BLOCK-COPOLYMERS CHAIN-TRANSFER SYNDIOTACTIC POLYPROPYLENE POLYOLEFIN ELASTOMERS LIVING POLYMERIZATION PROPYLENE COPOLYMERS COMPLEXES
DOI	10.1021/ma300384w
英文摘要	A binuclear heteroligated titanium(IV) catalyst based on phenoxyimine ligands (FI2-Ti-2) with its crystal structure elucidated has been developed for the first time for olefin (co)polymerization. In ethylene polymerization, the activity of the binuclear catalyst FI2-Ti-2 can reach 3.0 X 106 g mol(-1) h(-1), and the polydispersity of the resulting polymers is narrow. In copolymerization of ethylene and other olefins, similar incorporation ratios for monoenes are obtained for FI2-Ti-2 and FI-Ti-1. However, the incorporation ratio of 1,5-hexadiene increases from 3.2% using FI-Ti-1 to 8.8% with FI2-Ti-2. In comparison, the binuclear monophenoxyimine catalyst, [FI2-Ti-2(THF)(2)], exhibits higher catalytic activity and incorporates more alpha-olefins than its mononuclear analogue [FI-Ti-1(THF)] in the copolymerization. These results are interpreted as consequences of two effects. First, the cooperativity between the two metal centers facilitates the coordination of olefin. Second, the substitutions near the active sites exert a steric effect by blocking and suppressing the binding of comonomers.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000304224700004&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Polymer Science; SCI(E); 7; ARTICLE; 10; 4054-4059; 45
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/233425]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Han, Shuliang,Yao, Erdong,Qin, Wei,et al. Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization[J]. macromolecules,2012.
APA	Han, Shuliang,Yao, Erdong,Qin, Wei,Zhang, Shaofei,&Ma, Yuguo.(2012).Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization.macromolecules.
MLA	Han, Shuliang,et al."Binuclear Heteroligated Titanium Catalyst Based on Phenoxyimine Ligands: Synthesis, Characterization, and Ethylene (Co)polymerization".macromolecules (2012).