Abstract
A solvent and catalyst-free synthesis of a polyphosphate was accomplished. The reaction involved a gas-liquid polycondensation between phenylphosphoric dichloride and phenolphthalein. The polyphosphate was characterized by IR, 1H-NMR, inherent viscosity, thermal analysis and molar mass. Polyphosphate was stable up to 260oC. Keywords: gas-liquid polycondensation, polyphosphate