中华医学超声杂志

应用化学 ›› 1998, Vol. 0 ›› Issue (6): 57-60.

• 研究论文 • 上一篇    下一篇

稀土催化丁二烯顺式聚合过程中的环化改性

王朝阳, 杨继华, 董为民, 逄束芬   

  1. 中国科学院长春应用化学研究所 长春130022
  • 收稿日期:1998-04-20 修回日期:1998-09-04 出版日期:1998-12-10 发布日期:1998-12-10
  • 基金资助:
    国家自然科学基金(29574179)

Cyclization Modification in Course of Cis-polymerization of Butadiene Initiated by Rare Earth Catalyst

Wang Chaoyang, Yang Jihua, Dong Weimin, Pang Shufen   

  1. Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022
  • Received:1998-04-20 Revised:1998-09-04 Published:1998-12-10 Online:1998-12-10

PDF

464

被引次数

11 | 3

摘要： 采用NdCl3·3i-PrOH-AlEt3稀土催化剂进行丁二烯的顺式聚合,在聚合过程中引入烯丙基氯,进行分子内环化反应以及单体的环聚反应。考察了稀土催化剂用量、n(烯丙基氯)/n(AlEt3)、环化时间、反应温度、单体浓度等对环化反应的影响,并对产物进行了红外光谱、核磁共振光谱的表征.

关键词: 丁二烯, 稀土催化剂, 顺式聚合, 烯丙基氯, 环化, 环聚

Abstract: Butadiene was polymerized to some extent in the presence of binary catalyst system NdCl3·3i-PrOH-AlEt3 in toluene and the allylchloride was then added to the solution in order to cyclize the formed polybutadiene and cyclopolymerize the unreacted butadiene monomers. Influ-ences of the amount of rare earth catalyst, molar ratio of allylchloride to AlEt3, cyclization reaction time and temperature, and concentration of the monomers on the cyclization reaction have been investi-gated. The microstructures of the end polymers have been characterized by IR and 1H NMR mea-surements.

Key words: butadiene, rare earth catalyst, cis-polymerization, allylchloride, cyclization, cyclopoly-merization

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