In Poland from few years undertaken research work to determine the possibility of the exploitation of new materials for ceramic shell moulds preparation. Most of methods of fabrication ceramic slurries for investment casting are based on alcohol binders. This is a one of first research for determine how to prepare ceramic slurries using a new ecological method of production based on water soluble binders. Work present rheological properties of ceramic slurries based on silicon carbide and new binders additions (polyvinyl alcohol and two polyacrylic binders). To modification rheological properties of investigated slurries deflocculants in amount 15 wt.% as a solution were added. Solid phase content in ceramic slurries were 62.5 wt.%. Standard industrial parameters like: pH, density, Zhan 4# Cup viscosity and dynamic viscosity on rheometer were studied. To characterization silicon carbide material grain size, SEM and Zeta potential were studied. Ceramic slurries were made in mechanical mixer. Time of mixed was 96h. Obtained results shown that ceramic slurries were stable vs. time and meet standard industrial requirements. Ceramic slurries had very promising properties and there are very perspective for future shell moulds fabrication.