Preparation and characterization of a novel hyperbranched polyphosphate ester

► We prepared three novel hyperbranched polyphosphate esters (HPPE-1, HPPE-2 and HPPE-3). ► Their chemical structures were characterized by FT-IR, 1D NMR and 2D NMR techniques. ► Their degrees of branching were over 0.87. ► TG-FTIR was used to study thermal degradation mechanism of the HPPE-2.