NOVEL PHOPHORIC FLAME RETARDANDT, METHOD FOR PREPARING THE SAME AND FLAMEPROOF THERMOPLASTIC RESIN COMPOSITION CONTAINING THE SAME

摘要

A phosphorus-based flame retardant is provided to ensure excellent fire retardancy and stability against fire and to prepare a thermoplastic resin composition with environment-friendliness and excellent fire retardancy. A phosphorus-based flame retardant has a structure represented by chemical formula 1. A method for manufacturing the phosphorus-based flame retardant comprises the steps of: adding a compound represented by chemical formula 3 to a mixture of phloroglucinol and solvent in a temperature range of 0~25°C; after completion of dropping, and increasing the reaction solution to 65~120 °C for 3~5 hours to react the reaction solution; and cooling the reaction solution to 0~20 °C and filtering and evaporating the reaction solution.