本文以马来酸酐、苯胺为原料 ,三乙胺为脱水催化剂合成了 7种含苯取代基的马来酰亚胺单体 ( Ph MI) ,采用元素分析 EA、核磁共振 NMR、傅立叶红外 FT-IR等仪器对产物及中间产物的结构进行表征 ,并对单体熔、溶性能和聚合反应性进行考察。结果表明 ,合成产物与预期产品结构一致 ;7种单体中 ,(邻或间 -甲 )苯基马来酰亚胺的熔、溶性能最好 ;除邻 -甲苯基马来酰亚胺较难聚合外 ,其余单体具有良好的聚合性能。 In this paper, seven kinds of maleic anhydride monomers (Ph MI) containing benzene substituents were synthesized by using maleic anhydride and aniline as raw materials and triethylamine as dehydration catalyst. Elemental analysis, nuclear magnetic resonance NMR, Fourier transform infrared FT- IR and other equipment to characterize the structure of the product and the intermediate product, and to investigate the monomer melting, solubility and polymerization reactivity. The results show that the synthesized product is consistent with the expected product structure. Among the seven monomers, (o- or m-tolyl) maleimide has the best melting and dissolution behavior. In addition to o-tolylmaleimide Difficult polymerization, the other monomer has a good polymerization performance.