中华医学超声杂志

应用化学 ›› 1987, Vol. 0 ›› Issue (6): 7-13.

• 研究论文 • 上一篇    下一篇

丁二烯/甲苯/叔丁氧基钾-正丁基锂体系聚合反应的研究——Ⅰ.调聚物的合成

周广滨1, 许国津2, 李晶洁2   

  1. 1. 华南工学院;
    2. 大连工学院化工学院高分子材料系
  • 收稿日期:1986-05-30 修回日期:1986-11-14 出版日期:1987-12-10 发布日期:1987-12-10
  • 基金资助:
    中国科学院基金

STUDIES ON THE POLYMFRIZATION SYSTEM OF BUTADIENE/TOLUENE/n-BUTYL LITHIUM-POTASSIUM BUTOXIDE Ⅰ.PREPARATION OF BUTADIENE TELOMERS

Zhou Guangbin1, Xu Guojin2, Li Jingjie2   

  1. 1. South China Institute of Technology;
    2. Polymer Division, Dalian Institute of Technology
  • Received:1986-05-30 Revised:1986-11-14 Published:1987-12-10 Online:1987-12-10

PDF

446

被引次数

7

摘要： 本文以叔丁氧基钾-正丁基锂作引发剂,甲苯作溶剂和链转移剂,在四甲基乙二胺等添加剂存在下合成了分子量800—3000,1,2结构为10—60%的液体聚丁二烯调聚物。实验中考察了引发剂浓度及组成,极性试剂,温度等因素对聚合的影响,并提出了最佳合成条件:引发剂浓度k'=1—2mol×10-3/75gBd;引发剂组成k"=0.1—0.6;反应温度40—70℃;极性试剂量k"'≤3.0(TMEDA)。

Abstract: Liquid poly-butadiene telomers (Mn800-3000, vinyl content 10-60%) were prepared by using n-butyl lithium-potassium butoxide as catalyst, toluene as solvent, with the addition of different polar modifiers (TMEDA, 4G, 2G, HMPA). The effects of concentration and composition of initiator, concentration of polar modifiers, temperature etc. on the reaction were investigated. The optimal reaction conditions determined were: concentration of initiator k'=1-2mol×10-3/75g Bd, relative composition of initiator k"=0.1-0.6, reaction temperature 40-70℃, relative composition of polar modifier k″′≤3.0 (TMEDA).

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