Synthesis of Flame Retardant of Melamine Phosphate

This paper was reported a method of making intumescent flame retardant from pentaerythritol, Phosphorus oxychloride and melamine, The effects of molar ratio, reaction temperature and time on the reaction were obtained ,and the best reaction condition was established : the molar of PDD and melamine is 1:2.5, reaction temperature60°C, reaction time about 10h, the yield was 82%.