高等学校化学学报

高等学校化学学报 ›› 1999, Vol. 20 ›› Issue (12): 1982.

• 研究快报 • 上一篇    下一篇

杯[8]芳烃钕-Al(i-Bu)3体系催化乙烯聚合

沈之荃1, 陈耀峰1, 张一烽1, 寇瑞强1, 陈林深2   

  1. 1. 浙江大学高分子科学与工程系, 杭州 310027;
    2. 浙江大学中心实验室, 杭州 310027
  • 收稿日期:1999-08-02 出版日期:1999-12-24 发布日期:1999-12-24
  • 通讯作者: 张一烽
  • 作者简介:沈之荃,女,68岁,教授.
  • 基金资助:

    国家自然科学基金-北京燕山石化公司研究院联合项目(批准号:29844002);浙江省自然科学基金(批准号:298024);波谱与原子物理国家重

Polymerization of Ethylene with Calix[8]arene Neodymium-Al(i-Bu)3System

SHEN Zhi-Quan1, CHEN Yao-Feng1, ZHANG Yi-Feng1, KOU Rui-Qiang1, CHEN Lin-Shen 2   

  1. 1. Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China;
    2. Central Laboratory, Zhejiang University, Hangzhou 310027, China
  • Received:1999-08-02 Online:1999-12-24 Published:1999-12-24

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关键词: 杯[8]芳烃, 稀土催化剂, 聚乙烯

Abstract: Calix[8]arene neodymium was prepared by reacting calix[8]arene with metallic sodium in a mixture of benzene and isopropanol, then with anhydrous neodymium chloride. Calix[8]arene neodymium in combination with Al(i-Bu)3as a cocatalyst was active in the polymerization of ethylene. Effects of Al/Nd molar ratio, concentration of catalyst and temperature on the ethylene polymerization were studied in detail. Polyethylene having Mv of 97×104was obtained under the following conditions: [Nd]=8×10-4mol/L, the molar ratio of Al to Nd=15, 80 ℃, 0.5 h; ethylene pressure=1.2 MPa, and the catalytic activity is 24 kg PE/(mol Nd·h) .

Key words: Calix[8]arene, Rare earth catalyst, Polymerization of ethylene

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