Preparation of Polyamides from Thiophene-2, 5-di-β-Propionic Acid

Abstract

New polyamides having thiophene nucleus were prepared by the polycondensation reaction of thiophene-2, 5-di-β-propionic acid with polymethylene diamines of carbon number of 4 to 10. All of the polyamides obtained here, except one derived from tetramethylene-diamine, showed good melt-spinning property and gave cold-drawable filament. The effects of thiophene nucleus inserted in polyamide chain on melting point and thermal-stability were discussed.