Lewis酸改性烷基锂负离子聚合研究进展 Ⅲ.以烷基铝为添加剂的第2代引发体系  

Progress in research of Lewis acids modified alkyl lithium intiated anionic polymerization Ⅲ. Second generation of initiator systems related to alkylaluminum

作　　者：王德充 梁爱民[2] 

机构地区：[1]中国合成橡胶工业协会,北京100120 [2]中国石化北京燕山分公司研究院,北京102500

出　　处：《合成橡胶工业》2010年第5期327-334,共8页China Synthetic Rubber Industry

摘　　要：介绍了三异丁基铝/聚苯乙烯基锂活性种引发苯乙烯阻滞负离子聚合的一些特性,评述了不同铝衍生物如烷基铝、氢化二异丁基铝和二乙基烷氧基铝对苯乙烯在高温下烃介质中的负离子聚合的影响,指出烷基铝添加剂的结构和[Al]/[Li](摩尔比)对酸根型络合物的形成、聚合的阻滞效应以及反应性有重要作用,这类引发体系为苯乙烯高温阻滞负离子聚合提供了很宽的操作范围。Several features of ionic polymerization initiated by retarded styrene an- using triisobutylalu- minum/polystyryllithium species were introduced. The influence of various aluminum derivatives, such as R3A1, AI（i-Bu）2H, Et2AIOR＇ on the anionic pol- ymerization of styrene in hydrocarbons at high tem- perature were reviewed. The importance of the structure of R3 A1 additives and [ A1 ] / [ Li ] （ mole ratio） in the formation of ＂ ate＂ complexes, the retardation effect and the reactivity of the polymerization were pointed out. A very broad operating range for high temperature retarded styrene anionic polymerization was allowed by these initiating systems.

关 键 词：铝衍生物 负离子聚合 阻滞效应 

分 类 号：TQ316.324[化学工程—高聚物工业]