alpha,omega-Hydroxy-terminated vinyl prepolymers were prepared by radical polymerization of methyl methacrylate, butyl acrylate, styrene and vinyl acetate in the presence of allyl alcohol. The butyI acrylate prepolymer of molecular weight 3100 and functionality 2.2 was prepared by the following condition; [BA] = 3.85 mol/l, [ACPROL] = 0.128 mol/l and [AA] = 0.90 mol/l at 110 degrees C. The polyurethane reactions of the resulting telechelic polymers with hexamethylene diisocyanate were carried out to obtain vinyl polymer-based polyurethanes.