阻燃剂RDP的合成研究

Study on the Synthesis of Flame Retardant RDP

提出了以间苯二酚、三氯氧磷和苯酚为原料合成四苯基间苯二酚二磷酸酯(RDP)。研究了原料配比、反应温度、反应时间等因素对产品质量和收率的影响,从而确定最佳的工艺条件:三氯氧磷、间苯二酚和苯酚的摩尔比为5:1:4.2,酰氯化反应温度为114℃,保温反应4小时,酯化反应阶段,120℃保温反应3小时,150℃保温反应3.5小时,产品收率为92.6%,RDP单体含量为72.5%。

This article introduced that the flame retardant RDP was synthesised with phosphorus oxychloride,resorcinol and phenol as raw materials.The effects of molecular ratio,reactant temperature and reactant time on the quality and yield of the product was studied.The optimum reaction conditions are the follows：phosphorus oxychloride：resorcinol：phenol is 5：1：4.2.The temperature of acylchlorination is 114℃ and reaction time is 4h.The esterification temperature is 120℃ and reaction time is 3h at first,and then is 150℃ for 3.5h.Under the optimum reaction conditions,the yield of the product can be up to 92.6%,the content of RDP can be up to 72.5%.