NOVEL POLY(ETHER BENZIMIDAZOLE)S FROM BIS(NITROBENZIMIDAZOLE) DERIVATIVES

In this paper, we present experimental findings on the synthesis and c haracterization of novel condensation of activated aromatic dinitro co mpounds containing preformed benzimidazole units and 1,6-hexandiol in N-methylpyrrolidone (NMP). These polymers were obtained in high to qua ntitative yields and with varying molecular weights (inherent viscosit ies from 0.43 to 0.77 dL/g), which in some cases were in the fiber for ming range. They show high thermal stability, decompose above 400 degr ees C and have glass transition temperatures in the 240-300 degrees C range.