SYNTHESIS OF CALIXTITANIUM COMPOUNDS AND USING FOR ETHYLENE AND STYRENE POLYMERIZATIONS

LI Yong; ZHENG Yansong; XIE Guanghua

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SYNTHESIS OF CALIXTITANIUM COMPOUNDS AND USING FOR ETHYLENE AND STYRENE POLYMERIZATIONS

Research Bulletin | 更新时间：2021-03-19

- SYNTHESIS OF CALIXTITANIUM COMPOUNDS AND USING FOR ETHYLENE AND STYRENE POLYMERIZATIONS
- Acta Polymerica Sinica Issue 1, Pages: 101-103(1998)
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- Published：20 February 1998，
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LI Yong, ZHENG Yansong, XIE Guanghua. SYNTHESIS OF CALIXTITANIUM COMPOUNDS AND USING FOR ETHYLENE AND STYRENE POLYMERIZATIONS. [J]. Acta Polymerica Sinica (1):101-103(1998)
DOI：

LI Yong, ZHENG Yansong, XIE Guanghua. SYNTHESIS OF CALIXTITANIUM COMPOUNDS AND USING FOR ETHYLENE AND STYRENE POLYMERIZATIONS. [J]. Acta Polymerica Sinica (1):101-103(1998) DOI：

摘要

杯芳烃钛化合物的合成及用于乙烯和苯乙烯聚合的研究李勇郑炎松谢光华（中国科学院化学研究所北京１０００８０）关键词杯芳烃

钛化合物

聚乙烯

间规聚苯乙烯在茂金属／甲基铝氧烷（ＭＡＯ）均相催化体系中

催化剂的结构起着至关重要的作用

配体的空间效应、电子效应、中心金属原子的性质决定了聚合活性以及聚合物的性质．制备间规聚苯乙烯的催化剂已有大量专利和文献报道

主催化剂主要是有机钛化合物

助催化剂主?...

Abstract

Several calix n titanium compounds( n =4

8) have been synthesized and used for ethylene and styrene polymerization.Results show that ethylene was polymerized by calix n titanium /MAO systems with mild activity and very high molecular weight

and styrene was polymerized with high activity and syndiotacticity.In the case of calix 4 titanium and calix 6 titanium

the polystyrene obtained had syndiotacticity more than 90%.No syndiotactic polymer but only atactic polystyrene was obtained by calix [8] titanium compound.

关键词

杯芳烃钛化合物聚乙烯间规聚苯乙烯

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