SYNTHESES AND CHARACTERIZATION OF THE π-ALLYL-RARE EARTH COMPLEXES AND STUDIES ON THE MECHENISM OF OLEFIN POLYMERIZATION Ⅲ.STUDIES ON THE POLYMERIZATION OF ISOPRENE AND STYRENE WITH LiLn (π-C3H5)4·nD COMPLEXES

LI Feng-fu; JIN Ying-tai; PEI Feng-kui; WANG Fo-song

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SYNTHESES AND CHARACTERIZATION OF THE π-ALLYL-RARE EARTH COMPLEXES AND STUDIES ON THE MECHENISM OF OLEFIN POLYMERIZATION Ⅲ.STUDIES ON THE POLYMERIZATION OF ISOPRENE AND STYRENE WITH LiLn (π-C3H5)4·nD COMPLEXES

Research Article | 更新时间：2021-03-19

- SYNTHESES AND CHARACTERIZATION OF THE π-ALLYL-RARE EARTH COMPLEXES AND STUDIES ON THE MECHENISM OF OLEFIN POLYMERIZATION Ⅲ.STUDIES ON THE POLYMERIZATION OF ISOPRENE AND STYRENE WITH LiLn (π-C3H5)4·nD COMPLEXES
- Acta Polymerica Sinica Issue 3, Pages: 257-262(1994)
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- Published：20 June 1994，
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LI Feng-fu, JIN Ying-tai, PEI Feng-kui, WANG Fo-song. SYNTHESES AND CHARACTERIZATION OF THE π-ALLYL-RARE EARTH COMPLEXES AND STUDIES ON THE MECHENISM OF OLEFIN POLYMERIZATION Ⅲ.STUDIES ON THE POLYMERIZATION OF ISOPRENE AND STYRENE WITH LiLn (π-C3H5)4·nD COMPLEXES. [J]. Acta Polymerica Sinica (3):257-262(1994)
DOI：

LI Feng-fu, JIN Ying-tai, PEI Feng-kui, WANG Fo-song. SYNTHESES AND CHARACTERIZATION OF THE π-ALLYL-RARE EARTH COMPLEXES AND STUDIES ON THE MECHENISM OF OLEFIN POLYMERIZATION Ⅲ.STUDIES ON THE POLYMERIZATION OF ISOPRENE AND STYRENE WITH LiLn (π-C3H5)4·nD COMPLEXES. [J]. Acta Polymerica Sinica (3):257-262(1994) DOI：

摘要

本文研究了ＬｉＬｎ（π－Ｃ３Ｈ５）４·ｎＤ（Ｌｎ＝Ｌａ、Ｔｂ，ｎ＝３；Ｌｎ＝Ｃｅ、Ｐｒ、Ｎｄ、Ｓｍ、Ｇｄ、Ｅｒ，ｎ＝２；Ｌｎ＝Ｙ、Ｄｙ，ｎ＝２．５；Ｄ为二氧六环）催化异戊二烯和苯乙烯的均聚合反应．其中，钇配合物的催化活性为最高．聚异戊二烯顺式－１，４链节含量在４３－８１％．聚合体系内少量给电子体的加入使聚合物中３，４－链节含量高达８４％．所得聚苯乙烯为无规结构．

Abstract

LiLn (π - C3H5)4·nD (Ln=La

n=3;Ln=Ce

n = 2;Ln=Y

n= 2. 5; D=dioxane) can polymerize isoprene and styrene except Erium complexes

in which Yittrium complex is with the highest activity.About 43 -81% cis- 1.4 chains are contained in the polyisoprene with different complexes. The insertion reaction of isoprene between π-allyl and rare earth in the previoius paper was confiremed.High 3

4-polyisoprene was obtained by adding some Lewis bases to the polymerization systems.Polystyrene was identified as atactic polymer by IR spectrum.

关键词

π－烯丙基稀土配合物异成二烯苯乙烯均聚合反应

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