POLYPHOSPHATE DERIVATIVE OF 1,3,5-TRIAZINE COMPOUND, SYNTHESIS METHOD AND USE THEREOF Russian patent published in 2010 - IPC C08G79/04 C09K21/12 C07D251/00 

FIELD: chemistry.

SUBSTANCE: invention relates to polyphosphate derivatives of 1,3,5-triazine compound, preferably melamine polyphosphate, which have high heat resistance during processing and are used as antipyrene. The compounds have average degree of condensation n (number average) of over 20, pH value of a 10% suspension of the corresponding polyphosphate derivative in water at 25°C is equal to or greater than 5, molar ratio of 1,3,5-triazine compound to phosphorus (M/F) less than 1.1 and decomposition temperature above 320°C. The polyphosphate derivatives are obtained through thermal treatment of orthophosphate or condensed phosphate with average degree of condensation n (number average) less than 20 in an ammonium atmosphere at temperature ranging from 300 to 400°C until attaining average degree of condensation greater than 20 and molar ratio of 1,3,5-triazine compound to phosphate (M/F) less than 1.1.

EFFECT: increased heat resistance with low water-solubility and low conductivity of obtained compounds.

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