Chem. J. Chinese Universities ›› 1999, Vol. 20 ›› Issue (2): 321.

• Articles • Previous Articles     Next Articles

Copolymerization of Ethylene and Styrene Catalyzed via Supported Et(Ind)2ZrCl2

YAN Wei-Dong, ZHANG Lei, ZHOU Nai, HONG Han, HU You-Liang   

  1. Institute of Chemistry, The Chinese Academy of Sciences, Beijing, 100080
  • Received:1998-04-13 Online:1999-02-24 Published:1999-02-24

Abstract: The poly(ethylenecostyrene) was synthesized with rac-Et(Ind)2ZrCl2/MAO supported on SiO2-955. Compared with homogeneous rac-Et(Ind)2ZrCl2/MAO, the content of styrene in the copolymer with the supported rac-Et(Ind)2ZrCl2/MAO was increased to 3.5%(molar fraction) and Al/Zr molar ratio was decreased to 300. The polymerization activity was 5.8×105g/(mol5h) at 353 K. The distribution of styrene unit in the copolymer was believed in randoMAccording to 13CNMR spectrum. The effects of Al/Zr molar ratio, the molar ratio of styrene to ethylene in the monomer feed and reaction temperature on the copolymerization were investigated in this paper.

Key words: Supporting, Metallocene, Copolymerization, Ethylene, Styrene

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