中华医学超声杂志

应用化学 ›› 1988, Vol. 0 ›› Issue (2): 34-37.

• 研究论文 • 上一篇    下一篇

丁二烯在稀土催化体系中的本体聚合

廖玉珍, 赵立群, 柳希春   

  1. 中国科学院长春应用化学研究所
  • 收稿日期:1986-12-11 修回日期:1987-03-26 出版日期:1988-04-10 发布日期:1988-04-10

BULK POLYMERIZATION OF BUTADIENE WITH RARE EARTH CATALYST

Liao Yuzhen, Zhao Liqun, Liu Xichun   

  1. Changchun, Institute of Applied Chemistry, Academia Sinica
  • Received:1986-12-11 Revised:1987-03-26 Published:1988-04-10 Online:1988-04-10

PDF

370

被引次数

5

摘要： 本工作利用一新型稀土催化剂,在实验室中通过本体聚合成功地合成出了顺式含量高达97%以上,特性粘数[η]在1,0—5,0范围内的无疑胶聚丁二烯.实验结果表明,本体聚合的某些基本规律与溶液聚合的规律一致.所不同的是,本体聚合具有较高的聚合活性,并可得到分子分量分布较窄的聚合物并且具有良好的加工性能.

关键词: 丁二烯, 络合聚合, 稀土催化剂, 本体聚合

Abstract: Bulk polymerization technique so far has not been successfully realized for cis-1,4 polybutadiene synthesis. In this research a type of rare earth based catalyst was developed for the synthesis of gel free polybutadicne(PB) with high cis-1,4 content. The results show that the catalyst has a higher activity than in solution polymerization and the molecular weight distribution of PB obtained in bulk polymerization is more narrow than those obtained in solution polymerization. It is also found that when the ratio of Cl/Ln is between 1.0 and 7.0 the conversion of monomer is 70% and more.

Key words: Butadiene, Coordination polymerization, Rare earth, catalyst, Bulk polymerization

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