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

被引：0
|
作者：
叶坚定
范志强
王伟
机构：
[1] China
[2] Hangzhou 310027
[3] Institute of Polymer Science
[4] Zhejiang University
来源：
Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) | 2005年 / 10期
基金：
中国国家自然科学基金;
关键词：
Unbridged metallocene; Ethylene; 1-Hexene; Copolymerization; Temperature effect;
D O I：
暂无
中图分类号：
O631 [高分子物理和高分子物理化学];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
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 co- polymer 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 mo- lecular weight distribution. A mechanism model based on ligand rotation hindered by the propagation chain has been proposed to qualitatively explain the observed phenomena.
引用
收藏
页码：1009 / 1014
页数：6
相关论文
共 50 条
  • [1] Strong influences of polymerization temperature on ethylene/1-hexene copolymerization catalyzed by (2-PhInd)2ZrCl2/methyl aluminoxane
    Ye Jian-ding
    Fan Zhi-qiang
    Wang Wei
    [J]. Journal of Zhejiang University Science B, 2005, 6 (10): : 1009 - 1014
  • [2] Copolymerization of ethylene and 1-hexene with Et(Ind)2ZrCl2 in hexane
    Britto, ML
    Galland, GB
    dos Santos, JHZ
    Forte, MC
    [J]. POLYMER, 2001, 42 (15) : 6355 - 6361
  • [3] Copolymerization of ethylene and 1-hexene with in-situ supported Et[Ind]2ZrCl2
    Chu, KJ
    Shan, CLP
    Soares, JBP
    Penlidis, A
    [J]. MACROMOLECULAR CHEMISTRY AND PHYSICS, 1999, 200 (10) : 2372 - 2376
  • [4] Polymerization of ethylene, propylene and 1-hexene over (2-MeInd)2ZrCl2/MAO catalyst
    Yoon, JS
    Kwon, OJ
    Lee, HK
    Lee, IM
    Lee, GY
    Kang, MS
    Xue, M
    [J]. EUROPEAN POLYMER JOURNAL, 1998, 34 (5-6) : 879 - 881
  • [5] Terpolymerization of Ethylene/Propylene/Diene Monomers Using (2-PhInd)2ZrCl2 Metallocene Catalysts
    Ahmadjo, Saeid
    Arabi, Hassan
    Nekoomanesh, Mehdi
    Zohuri, Gholam Hossein
    Mortazavi, Mohammad Mehdi
    Naderi, Ghasem
    [J]. MACROMOLECULAR REACTION ENGINEERING, 2010, 4 (11-12) : 707 - 714
  • [6] Influence of trimethylaluminum on kinetics of rac-Et(Ind)2ZrCl2/aluminoxane catalyzed ethylene polymerization
    Guo, Yintian
    He, Feng
    Zhang, Zhen
    Khan, Akbar
    Fu, Zhisheng
    Xu, Junting
    Fan, Zhiqiang
    [J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2016, 808 : 109 - 116
  • [7] Kinetic study on copolymerization of ethylene and 1-hexene catalyzed by CP2ZrCl2/MAO catalytic system
    Wang, Jianfeng
    Wang, Li
    Gao, Haoqi
    Wang, Wenqin
    Jiang, Guohua
    Dong, Xiaocheng
    Wang, Wei
    Feng, Lianfang
    [J]. POLYMER ENGINEERING AND SCIENCE, 2007, 47 (04): : 540 - 544
  • [8] Dynamic model of the copolymerization of propylene and 1-hexene with the Me2Si(2-Me-Ind)2ZrCl2 catalytic system:: Effect of 1-hexene concentration
    Palza, Humberto
    Velilla, Teresa
    Quijada, Raul
    [J]. POLYMER-PLASTICS TECHNOLOGY AND ENGINEERING, 2006, 45 (11) : 1233 - 1241
  • [9] Indirect Synthesis of Bis(2-PhInd)ZrCl2 Metallocene Catalyst, Kinetic Study and Modeling of Ethylene Polymerization
    Ahmadjo, Saeid
    Arabi, Hassan
    Nekoomanesh, Mehdi
    Mortazavi, Seyed M. M.
    Zohuri, Gholam
    Ahmadi, Mostafa
    Bolandi, Shiva
    [J]. CHEMICAL ENGINEERING & TECHNOLOGY, 2011, 34 (02) : 249 - 256
  • [10] Relative reactivity enhancement of (Me5Cp)2ZrCl2 in mixture with (1,2,4-Me3Cp)2ZrCl2 during ethene/1-hexene copolymerization
    Bruaseth, I
    Rytter, E
    [J]. MACROMOLECULAR SYMPOSIA, 2004, 213 : 69 - 78
12345