异丁烯聚合新催化体系研究 Ⅰ.均聚与共聚反应  

A Novel Catalyst System for IB Polymerization Ⅰ.Homopolymerization and Copolymerization

作　　者：柯扬船[1] 吴天斌[1] 郭文莉[2] 李树新[2] 董鹏[1] 

机构地区：[1]石油大学,北京102200 [2]北京石油化工学院

出　　处：《应用化学》2004年第2期164-168,共5页Chinese Journal of Applied Chemistry

基　　金：CNPC创新基金 (J0 2 2 0 )与重油国家重点实验室项目资助 (J2 0 0 2 0 1)项目

摘　　要：用苯甲酰氯 (BC) /TiCl4引发异丁烯 (IB)聚合及与苯乙烯 (St)的共聚反应 ,得到分子量高、分布窄的聚异丁烯及其共聚物 ,并控制了BC的高活性。对IB均聚及其与ST共聚反应影响因素 (体系浓度、残余水、第 3组分三乙胺 (TEA) )进行优化 ,得到最佳条件为 :[BC]=2 6mmol/L、[TEA]/[BC]=1 0 (均聚 )和n(TiCl4) /n(BC) =80、[TEA]/[BC]=4 0 (共聚 ) ,BC/TiCl4/TEA是最佳体系 ,对水不敏感 ,可以制备分子量高及分子量分布 (MWD)为 1 5 (均聚 )和 2 0 (共聚 )的窄分布聚合物 (GPC曲线均为单峰 )。The catalyst system consisted of benzoyl chloride(BC), TiCl 4 and a third additive is developed to initiate polymerization of isobutene(IB) and its copolymerization with styrene(St). Polyisobutene(PIB) and PIB-PS copolymers of high molecular weight and narrow molecular weight distribution were obtained whereas the high activity of BC could be controlled effectively. Based on the examination of the effects of the catalyst concentration, residual water and the third additive(triethyl amine(TEA)) on the reaction activity, the optimized condition is obtained as: \=2.6 mmol/L and \/\=1.0 for homopolymerization and n(TiCl 4)/n(BC)=80 and \/\=4.0 for copolymerization. The BC/TiCl 4/TEA system is found to be the best optimal, it is characteristic of being insensitive to water. PIB with MWD=1.5 and P(IB-co-St) with MWD=2.0 were obtained(only single peak occurred in their GPC curves).

关 键 词：苯甲酰氯 聚异丁烯 共聚合 活性聚合 

分 类 号：O632[理学—高分子化学]