Poly(urethane-urea)s based on oligocarbonatediols comprising bis(carbamate)alkanes

Abstract

In this work the results of studies on the prepolymeric method of obtaining poly(urethane-urea)s from oligocarbonatediols and isophoronediisocyanate (IPDI), cured with water vapor, are presented. α,ω-Bis(2- hydroxyethoxycarbonylamino)alkanes (dihydroxydiurethanes, DHDU) incorporated into the structure of oligocarbon-atediols and as pseudo-chain extenders were used for the synthesis of prepolymers. The oligocarbonatediols were obtained by the thermal polymerization of trimethylene carbonate (TMC) using 1,3-propanediol and DHDU as initiators. The poly(urethane-urea)s obtained exhibited very good mechanical properties (e.g.: tensile strength of 45.5MPa and elongation at break up to 580%).