中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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

浏览0
下载0
收藏0
其他版本

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。