Synthesis, characterization, and properties of polyurethanes containing 1,4:3,6‐dianhydro‐ D ‐sorbitol

Two‐ and three‐component polyurethanes containing 1,4:3,6‐dianhydro‐D‐sorbitol (isosorbide) derived from glucose were synthesized using n‐BuSn(O)OH·H2O as a catalyst, and the thermal properties (Tg, Td) of the polymers were investigated by differential scanning calorimetry and thermogravimetric analysis. We carried out molds for polyurethanes, the molds of polyurethanes were obtained. The dynamic mechanical analyzes showed that the storage modulus values of the three‐component polymers were constant to a higher temperature than those of the two‐component polymers. The storage moduli (E′), loss moduli (E″), and values of tan δ for the polymers were obtained. The rigidity of three‐component polymers was increased by the introduction of bisphenol A and diphenylmethane group to two‐component polymer.