摘要
柠康酸酐与4,4′-N,N′-二氨基二苯甲烷反应得到4,4′-N,N′-二苯甲烷双柠康酰胺酸(AMIC),再以共沸脱水法制得4,4′-N,N′-二苯甲烷双柠康酰亚胺(BCI)。结果表明,柠康酸酐与MDA的反应以温度35～40℃、每摩尔MDA配溶剂2.5L为佳。利用傅立叶转换红外光谱仪、核磁共振仪、元素分析仪和差示量热计等仪器对BCI进行了表征,证明与预想结构相符。选定的合成条件有效地克服了转位副反应,是制备BCI的一条较好的工艺路线。所得BCI纯度高达94%,其固化物有较好的耐热性。
N,N'-biscitraconimido-p,p'-diphenylmethane(BCI) was prepared through the reaction of citraconic anhydride and 4,4'-N,N'methylenedianiline from the corresponding biscitraconamic acid by azeotropic dehydration.Results showed that the optimal reaction conditions were reaction temperature 35～40 ℃,2.5 L solvent in each mol of MDA.BCI was characterized and analyzed by Fourier transform IR,HNME,elemental analysis,DSC etc.This synthesis route effectively overcame the side transfer reaction and was a good preparation route for BCI,whose purity could be 94% and cured product with good heat-resistance.
出处
《化工生产与技术》
CAS
2009年第4期16-19,33,共5页
Chemical Production and Technology
