无卤阻燃剂1,2-亚乙基双膦酸四甲酯的合成研究

Studies on Synthesis of Halogen-free Flame Retardant 1,2-Ethylene Bis(Dimethyl Phosphonate)

摘要:

以亚磷酸三甲酯和1,2-二溴乙烷为原料，在催化剂(CH3)4NI的作用下合成了一种无卤环保型阻燃剂1,2-亚乙基双膦酸四甲酯。当反应温度为160℃，反应时间为4.0h，反应物料比为3.0:1.0，催化剂用量为原料质量的0.5%时，该产品产率可达到90.9%。用高分辨质谱仪、红外光谱仪及核磁共振仪对产品结构进行了表征，并对其反应条件进行了探讨。

Abstract:

1,2-ethylene bis(dimethyl Phosphonate) was synthesized by trimethyl phosphite and 1,2-dibromoethane, using tetramethyl ammonium iodide as catalyst. It’s a kind of flame retardant which is environment-friendly and halogen-free. The optimal reaction conditions were obtained: the reaction temperature 160 ℃, the reaction time 4.0 h ,the ratio of trimethyl phosphite to1,2-dibromoethane 3.0:1.0, the mass of the catalyst 0.5% of reactant. The yield under this optimum reaction conditions was up to 90•9%. ESI-MS、IR and1HNMR were used to characterize its chemical structure. Its reaction conditions were discussed.