Polyurethane anionomers were synthesised in aqueous dispersions and used as polymer binders for powder alumina oxide used to manufacturing ceramic details. The van Oss-Good physical model describing the relation between the surface free energy of solids and wetting liquids and the experimentally determined contact angles on PTTFE, Al2O3 and ZrO2 surfaces (goniomeetry) were used for calculation the free surface energy and the long-range acid-base interactions. The calculations were carried out also for the aqueous dispersions of synthesized polyurethanes. The chemical structure of the polyol and urethane segments had the fundamental influence on the free surface energy. Type of the ionic segments influenced not only the acid-base interactions but also the dispersion interactions. The polymer coatings produced of the polyurethane anionomers were studied for volume resistivity, dielectric constant and dielectric dissipation factor. The anionomer based on HMDI cycloaliphatic diisocyanate was characterized by ionic conductivity. The material can be considered as a solid electrolyte showing significant tendency to structural modification in a variable electric field.