中华医学超声杂志

应用化学 ›› 1992, Vol. 0 ›› Issue (3): 76-78.

• 研究简报 • 上一篇    下一篇

乙酰丙酮钇催化环氧氯丙烷的均聚合与共聚合

张一烽, 沈之荃, 郑荣华, 陈仙海   

  1. 浙江大学化学系, 杭州 310027
  • 收稿日期:1991-06-10 修回日期:1991-09-16 出版日期:1992-06-10 发布日期:1992-06-10
  • 基金资助:
    国家自然科学基金

POLYMERIZATION OF EPICHLOROHYDRIN BY YTTRIUM ACETYLACETONATE

Zhang Yifeng, Shen Zhiquan, Zheng Ronghua, Chen Xianhai   

  1. Department of Chemistry Zhejiang University, Hangzhou 310027
  • Received:1991-06-10 Revised:1991-09-16 Published:1992-06-10 Online:1992-06-10

PDF

400

被引次数

1

摘要： 用过渡金属络合催化剂聚合环氧氯丙烷能获高分子量的聚合物[1]。稀土络合催化剂对环氧乙烷[2],环氧丙烷[3]及环硫丙烷[4]的开环聚合具有明显效果。本文选用Y(acac)3-H2O-Al(i-Bu)3催化剂,考察环氧氯丙烷的均聚合及其与环氧乙烷,环氧丙烷的共聚合,并用核磁共振方法测定其竞聚率。

关键词: 乙酰丙酮钇, 环氧乙烷, 环氧丙烷, 环氧氯丙烷, 聚合, 共聚合

Abstract: Y(acae)3-H2O-Al(i-Bu)3 was used for homopolymerization of epichlorohydrin(ECH) and copolymerization of ECH with propylene oxide(PO) or ethylene oxide(EO). The molecular weight distribution of PECH determined by GPC showed that the number of the active species in the catalyst depends on the method of catalyst preparation. For copolymerization the monomer reactivity ratios obtained by NMR as follows: 2.08/0.21 for PO/ECH, 11.9/0.21 for EO/ECH.

Key words: yttrium acetylacetonate, epichlorohydrin, propylene oxide, ethylene oxide polymerization, copolymerization

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