高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (2): 321.

• 研究简报 • 上一篇    下一篇

载体化Et(Ind)2ZrCl2催化乙烯-苯乙烯共聚

阎卫东, 张雷, 周鼐, 洪瀚, 胡友良   

  1. 中国科学院化学研究所, 北京 100080
  • 收稿日期:1998-04-13 出版日期:1999-02-24 发布日期:1999-02-24
  • 通讯作者: 胡友良
  • 作者简介:阎卫东,37岁,博士研究生,大庆石油学院副教授.
  • 基金资助:

    国家自然科学基金(批准号:29734141)

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

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摘要： 用均相亚乙基二(1-茚基)二氯化锆(Et(Ind)2ZrCl2)催化乙烯和苯乙烯共聚时,所得共聚物中苯乙烯链节含量和聚合活性不能同时满足聚乙烯功能化的要求[1,2].因此我们用SiO2对Et(Ind)2ZrCl2进行载体化.

关键词: 载体化, 茂金属, 共聚, 乙烯, 苯乙烯

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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