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Received: 2005-07-27

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Journal of Zhejiang University SCIENCE B 2005 Vol.6 No.10 P.1009-1014


Strong influences of polymerization temperature on ethylene/1-hexene copolymerization catalyzed by (2-PhInd)2ZrCl2/methyl aluminoxane

Author(s):  YE Jian-ding, FAN Zhi-qiang, WANG Wei

Affiliation(s):  Institute of Polymer Science, Zhejiang University, Hangzhou 310027, China

Corresponding email(s):   stonestone5678@yahoo.com.cn, fanzq@zju.edu.cn

Key Words:  Unbridged metallocene, Ethylene, 1-Hexene, Copolymerization, Temperature effect

YE Jian-ding, FAN Zhi-qiang, WANG Wei. Strong influences of polymerization temperature on ethylene/1-hexene copolymerization catalyzed by (2-PhInd)2ZrCl2/methyl aluminoxane[J]. Journal of Zhejiang University Science B, 2005, 6(10): 1009-1014.

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author="YE Jian-ding, FAN Zhi-qiang, WANG Wei",
journal="Journal of Zhejiang University Science B",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%T Strong influences of polymerization temperature on ethylene/1-hexene copolymerization catalyzed by (2-PhInd)2ZrCl2/methyl aluminoxane
%A YE Jian-ding
%A FAN Zhi-qiang
%J Journal of Zhejiang University SCIENCE B
%V 6
%N 10
%P 1009-1014
%@ 1673-1581
%D 2005
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2005.B1009

T1 - Strong influences of polymerization temperature on ethylene/1-hexene copolymerization catalyzed by (2-PhInd)2ZrCl2/methyl aluminoxane
A1 - YE Jian-ding
A1 - FAN Zhi-qiang
A1 - WANG Wei
J0 - Journal of Zhejiang University Science B
VL - 6
IS - 10
SP - 1009
EP - 1014
%@ 1673-1581
Y1 - 2005
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2005.B1009

ethylene/1-Hexene was copolymerized by an unbridged zirconocene, (2-PhInd)2ZrCl2/MAO (methyl aluminoxane) at 0 °C and 50 °C respectively. High copolymerization activity and 1-Hexene incorporation were observed at 0 °C, with the copolymer formed having random sequence distribution and narrow molecular weight distribution. ethylene polymerization at 50 °C showed high activity, but copolymerization at 50 °C showed much lower activity, which decreased sharply with increasing 1-Hexene concentration in the monomer feed. Copolymer formed at 50 °C showed blocky sequence distribution and broad molecular weight distribution. A mechanism model based on ligand rotation hindered by the propagation chain has been proposed to qualitatively explain the observed phenomena.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article


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