高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (12): 1936.

• 论文 • 上一篇    下一篇

杯芳烃钕配合物均相体系催化丁二烯聚合

倪旭峰, 李维实, 张一烽, 沈之荃, 张天旭   

  1. 浙江大学高分子科学研究所, 杭州 310027
  • 收稿日期:1999-10-27 出版日期:2000-12-24 发布日期:2000-12-24
  • 通讯作者: 沈之荃(1931年生),女,教授,博士生导师,中国科学院院士,主要从事高分子化学和材料研究.
  • 基金资助:

    国家重点基础研究基金(批准号:G1999064801);国家自然科学基金-燕山石化基金(批准号:29844002);国家教育部博士学科点

Polymerization of1,3-Butadiene with Novel Calixarene Rare Earth Complex Based Homogeneous Catalysts

NI Xu-Feng, LI Wei-Shi, ZHANG Yi-Feng, SHEN Zhi-Quan, ZHANG Tian-Xu   

  1. Institute of Polymer Science, Zhejiang University, Hangzhou 310027, China
  • Received:1999-10-27 Online:2000-12-24 Published:2000-12-24

摘要: 应用新型配体杯芳烃钕配合物与三异丁基铝以及添加Al(i-Bu)2Cl为第三组分构成二元、三元均相催化体系催化丁二烯聚合.研究结果表明,对于杯[6,8]芳烃钕(C[n]NdxCly)/Al(i-Bu)3/汽油体系,当n(Al)/n(Nd)=40~100,50℃时具有中等催化聚合活性,所制得聚丁二烯的粘均分子量为1×105~2×105,顺-1,4结构含量为89%左右,添加适量Al(i-Bu)2Cl能提高催化活性.杯芳烃钕(C[n]Nd)构成的三元体系在n(Al)/n(Nd)=30,n(Cl)/n(Nd)=1~3时不同杯芳烃的活性次序为:C6>C4>C8

关键词: 稀土催化剂, 杯芳烃, 丁二烯聚合

Abstract: Neodymium based homogeneous catalysts for the polymerization of1,3-butadiene, calixarene neodymium(C[n]NdxCly)/Al(i-Bu)3and C[n]Nd/Al(i-Bu)3/Al(i-Bu)2Cl were examined.The binary systems based on C[n]NdxClywere found to be active even in the absence of halogen source, while adding Al(i-Bu)2Cl as the third component, the catalytic activity was improved.Polymer obtained has Mvabout1×105~2×105and cis-1,4 content90%. The ternary systems based on C[n]Nd also had an activity of butadiene polymerization, the effect of different calixarenes on the catalytic activity of ternary system is in the order of C6>C4>C8

Key words: Rare earth catalyst, Calixarene, 1,3-Butadiene polymerization

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