中华医学超声杂志

应用化学 ›› 1986, Vol. 0 ›› Issue (5): 79-81.

• 研究简报 • 上一篇    下一篇

端烯丙基聚硅氧烷的合成及其在乙烯聚合中的行为

方天如1, 于黎1, 刘兆岩1, 徐玉伦1, 韩纪唐2, 刘汉梁2, 梁尚锦2, 魏同成2   

  1. 1. 中国科学院长春应用化学研究所;
    2. 辽阳石油化纤公司研究院
  • 收稿日期:1985-12-18 修回日期:1986-03-17 出版日期:1986-10-10 发布日期:1986-10-10
  • 通讯作者: 方天如

SYNTHESIS OF ALLYLTERMINATED POLYDIME-THYLSILOXANES AND THEIR BEHAVIOR IN ETHYLENE POLYMERIZATION

Fang Tianru1, Yu Li1, Liu Zhaoyan1, Xu Yulun1, Han Jitang2, Liu Hanliang2, Liang Shangjin2, Wei Tongcheng2   

  1. 1. Changchun Institute of Applied Chemistry, Academia Sinica;
    2. Institute of Liaoyang Petrochemical Fibre Complex
  • Received:1985-12-18 Revised:1986-03-17 Published:1986-10-10 Online:1986-10-10

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摘要： 通过与大分子单体的共聚合是合成接枝聚合物的一个重要方法。已有人合成了端苯乙烯和丙烯酸酯的聚硅氧烷大分子单体,本文报道对端烯丙基聚二甲基硅氧烷的合成以及添加聚硅氧烷对Ziegler-Natta型催化剂乙烯聚合行为的影响。

Abstract: Allyl-ended polydimethylsiloxanes (allyl-PDMS)were synthesized via anionic poly merization of octamethylcyclotetrasiloxane (D4), either by using potassium allyl alco-xide as initiator or by adding allyl bromide as chain terminator. The influence of allyl-PDMS on the polymerization of ethylene in Al(C2H5)3-TiCl4-Mg(OC2H5)2 catalyst system was investigated. It was found that the addition of a small amount of allyl-PDMS improved the catalyst activity in the whole polymeriza-tion course examined, resulting in an apparent increase of the yield of polyethylene.However, larger amounts of allyl-PDMS added detracted the activity of the catalyst system, and the lower the molecular weight of allyl-PPMS, the stronger the negative effect on the catalyst activity,

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