COPOLYMERIZATION OF STYRENE AND DIENES CATALYZED BY 4f METAL COMPOUNDS Ⅱ. STUDIES ON COPOLYMERIZATION OF STYRENE AND BUTADINE

WANG Pi-kin; JIN king-tai; PEI Feng-kui; JING Feng-ying; Sun Yu-fang

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COPOLYMERIZATION OF STYRENE AND DIENES CATALYZED BY 4f METAL COMPOUNDS Ⅱ. STUDIES ON COPOLYMERIZATION OF STYRENE AND BUTADINE

Research Article | 更新时间：2021-03-19

- COPOLYMERIZATION OF STYRENE AND DIENES CATALYZED BY 4f METAL COMPOUNDS Ⅱ. STUDIES ON COPOLYMERIZATION OF STYRENE AND BUTADINE
- Acta Polymerica Sinica Issue 4, Pages: 392-397(1994)
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- Published：20 August 1994，
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WANG Pi-kin, JIN king-tai, PEI Feng-kui, JING Feng-ying, Sun Yu-fang. COPOLYMERIZATION OF STYRENE AND DIENES CATALYZED BY 4f METAL COMPOUNDS Ⅱ. STUDIES ON COPOLYMERIZATION OF STYRENE AND BUTADINE. [J]. Acta Polymerica Sinica (4):392-397(1994)
DOI：

WANG Pi-kin, JIN king-tai, PEI Feng-kui, JING Feng-ying, Sun Yu-fang. COPOLYMERIZATION OF STYRENE AND DIENES CATALYZED BY 4f METAL COMPOUNDS Ⅱ. STUDIES ON COPOLYMERIZATION OF STYRENE AND BUTADINE. [J]. Acta Polymerica Sinica (4):392-397(1994) DOI：

摘要

用新型稀土催化体系Ｌ３ＬｎｎＬ＇－ＲＸ－Ｒｍ＇ＡＩＨ３－ｍ对苯乙烯和丁二烯共聚合反应进行了系统地研究．探讨了配位基因、稀土元素、烷基铝和第三组份等因素对共聚合反应活性、聚合物的分子量以及立体规整性的影响．用１３Ｃ—ＮＭＲ方法解析了共聚物的序列结构．计算了苯乙烯与丁二烯的三种微现结构的键接几率，并以π－烯丙基机理和近扣配位机理，对一些实验结果进行了定性的解释．

Abstract

ew rare earth catalyst system suitable for preparing bi-and ter-copolymers of styrene(St) and conjugated dienes has ho report first in our laboratory. In this paper

the copolymerization of St and butadiene (Bd) with the L3Ln' nL'-RX- Rm'AIHM3-m catalyst system was further studied in detail on the effects of ligands

rare earths

alkyl aluminums

the third components etc. on the copolymerzation activihes

molecular weight and stereospeficities of the copolylners. The sequence structures of the copolymer were thoroughly in-vestigated by 13C-NMR spectrum. Some of the experimental results were tentatively explained by the mechanisms of π-allyl and back-biting coordination.

关键词

稀土催化剂苯乙烯和丁二烯共聚共聚合活性共聚物序列分布立体规整性

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