Solvent-resistant polyurethanes have been prepared from polyols containing pendant nitrile functions. The polyols were prepared by cationic co- & terpolymerization of β-cyanoethyl glycidyl ether (CEGE) with tetrahydrofuran, ethylene oxide, propylene oxide or epichlorohydrin. CEGE-based polyurethanes combine the hydrolytic, stability of the polyether-based materials with the solvent resistance of polyester-based materials. Physical properties of the polyurethanes are somewhat defensive, but sufficient to prepare coated fabrics. Solvent-resistant polyurethane foams were prepared from the triol produced via reaction of CEGE and N-aminoethylpiperazine.