Synthesis and characterization of N,N′-bis(p-aminophenyl)terephthalamide

A novel aryldiamidediamine was synthesized by using sodium hydride as catalyst,1,4-phenyleneamine and a series of terephthalic acid esters as starting materials.The dimethyl terephthalate was found to be the most active among those terephthalic acid esters used to react with 1,4-phenyleneamine at 40℃ to produce the N,N′-bis(p-aminophenyl)terephthalamide.The component and structure of the product were characterized by using elemental analysis,IR and 1HNMR .