Polyaroylenebenzimidazoles based on 2,3-di(3,4-diaminophenyl)quinoxaline

Polyaroylenebenzimidazoles containing quinoxal-2,3-diyl groups are synthesized by interaction of 2,3-di(3,4-diaminophenyl)quinoxaline with dianhydrides of 3,4,9,10-perylenetetracarboxylic, 1,4,5,8-naphthalenetetracarboxylic, and some bisnaphthalic acids. It is shown that polyaroylenebenzimidazoles thus obtained combine solubility in phenolic solvents with high thermal stability and heat resistance.