Article

Performance of various activators in ethylene polymerization based on an iron(II) catalyst system

  1. Qi Wang*,
  2. Huaxiang Yang,
  3. Zhiqiang Fan,
  4. Hong Xu

Article first published online: 13 JAN 2004

DOI: 10.1002/pola.11078

Issue

Journal of Polymer Science Part A: Polymer Chemistry

Journal of Polymer Science Part A: Polymer Chemistry

Volume 42, Issue 5, pages 1093–1099, 1 March 2004

Additional Information

How to Cite

Wang, Q., Yang, H., Fan, Z. and Xu, H. (2004), Performance of various activators in ethylene polymerization based on an iron(II) catalyst system. J. Polym. Sci. A Polym. Chem., 42: 1093–1099. doi: 10.1002/pola.11078

Author Information

  1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China

*Department of Polymer Science and Engineering, Zhejiang University, Hangzhou, 310027, People's Republic of China

Publication History

  1. Issue published online: 13 JAN 2004
  2. Article first published online: 13 JAN 2004
  3. Manuscript Accepted: 1 NOV 2003
  4. Manuscript Received: 22 MAY 2003

Funded by

  • State Key Fundamental Research Project of China. Grant Number: G1999064801

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Keywords:

  • activator;
  • late-transition-metal catalyst;
  • olefin polymerization;
  • polyethylene;
  • catalysts

Abstract

Ethylisobutylaluminoxane (EBAO) and its analogues were synthesized by a reaction between an triethylaluminum (Et3Al)/triisobutylaluminum (i-Bu3Al) mixture and 4-fluorobenzeneboronic acid, phenylboronic acid, or n-butaneboronic acid and subsequent hydrolysis with water. They were used as cocatalysts in ethylene polymerization catalyzed by an iron complex {[(ArN[DOUBLE BOND]C(Me))2C5H3N]FeCl2, where Ar is 2,6-diisopropylphenyl}. Polyethylene with a high molecular weight and a narrow molecular weight distribution was prepared with modified EBAOs, and the performance of the iron complex at high polymerization temperatures was greatly improved. The activators for the iron complex also affected the polymerization activity and the molecular weight of the resultant polyethylene. It was suggested that the stereo and electronic effects of the substitute groups of aluminoxane contributed to the improved performance of the new activators. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 1093–1099, 2004

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