Amides and polyamides of m‐phenylenedioxydiacetic acid

Abstract

Abstract The reaction between m‐phenylenedioxydiacetic acid (m‐PhDDA) and phenoxyacetic acid (PhA) with isocyanic esters was studied in order to establish the working conditions for the synthesis of some polyamides prepared from m‐PhDDA and diisocyanic esters. The polymers were characterized with respect to some physical properties as melting point, viscosity and IR‐spectra. In the latter the peak at 1668–1700 cm −1 was assigned to the CO amide function. The thermogravimetrical curves show better thermal properties for the polymers obtained in high boiling solvents as trichlorobenzene (TCB) and tetraline (THN).