乙酰丙酮氧钛催化碳酸二苯酯与1,4-丁二醇酯交换合成聚碳酸酯二醇  

Transesterification Between Diphenyl Carbonate and 1,4-Butanediol to Polycarbonate Diols Catalyzed by Titanium Oxide Acetylacetonate

作　　者：王丽苹[1,2,3] 萧斌[1,2,3] 王公应[1,2] 

机构地区：[1]中国科学院成都有机化学研究所,四川成都610041 [2]常州化学研究所常州市绿色化学和技术重点实验室,江苏常州213164 [3]中国科学院研究生院,北京100049

出　　处：《高分子材料科学与工程》2011年第10期8-10,共3页Polymer Materials Science & Engineering

基　　金：国家"十一五"科技支撑计划(2006BAE02803)资助项目

摘　　要：研究了乙酰丙酮氧钛(TiO(acac)2)在碳酸二苯酯(DPC)和1,4-丁二醇(1,4-BD)酯交换法合成聚碳酸酯二醇(PCDL)中的催化活性,并与钛酸丁酯和钛酸异丙酯催化剂进行了比较。在酯化过程中,以生成的苯酚的产率表征催化剂的活性,在缩聚过程中,以产品的数均分子量-Mn、羟基值和多分散性来表征。在优化的反应条件下,获得了分子量分布较窄的PCDL,其数均分子量为2600,羟基值为45.2 mg KOH/g。The catalytic activity of titaniumoxide acetylacetonate（TiO（acac）2） for the transesterification between diphenyl carbonate（DPC） and 1,4-butanediol to polycarbonate diols（PCDL） was investigated,and its catalytic activity was compared with that of titanium teraisopropoxide and titanium terabutoxide.The yield of phenol was used to evaluate the catalytic activity in the esterification process,and the n,hydroxyl value and polydispersity were used as the index in the polycondensation process.Under optimal reaction conditions,PCDL with narrow molecular weight distribution was synthesized,whose n and hydroxyl value is 2600 and 45.2 mg KOH/g,respectively.

关 键 词：乙酰丙酮氧钛 碳酸二苯酯 1 4-丁二醇 酯交换反应 

分 类 号：TQ323.41[化学工程—合成树脂塑料工业]