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    • 1. 发明申请
    • METHOD FOR PREPARING MELAMINE SALT OF BIS(PENTAERYTHRITOL PHOSPHATE) PHOSPHORIC ACID
    • 磷酸二甲酯盐酸盐(PENTAERYTHRITOL PHOSPHICIC酸)的制备方法
    • US20080255353A1
    • 2008-10-16
    • US12020454
    • 2008-01-25
    • Kuen-Yuan HWANGAn-Pang TuGai-Chi Chen
    • Kuen-Yuan HWANGAn-Pang TuGai-Chi Chen
    • C07D251/12
    • C07D251/56C07D251/18
    • A method for producing a melamine salt of bis(pentaerythritol phosphate) phosphoric acid is proposed. The method includes the steps of reacting and mixing pentaerythritol and diphosphorous pentaoxide in an extruder to carry out esterification to produce bis(pentaerythritol phosphate) phosphoric acid; and mixing bis(pentaerythritol phosphate) phosphoric acid with melamine or a derivative thereof to carry out quaternization in the presence of a solvent, followed by removing water to obtain a melamine salt of bis(pentaerythritol phosphate) phosphoric acid. Diphosphorous pentaoxide is used in the method as a reactant, so that no hydrogen chloride is produced and it is not necessary to recollect trichlorophosphoric acid. Moreover, in the method of the present invention, such that esterification time can be shortened and a high pressure in a closed reaction system that causes explosion can be avoided.
    • 提出了制备双(季戊四醇磷酸酯)磷酸三聚氰胺盐的方法。 该方法包括在挤出机中使季戊四醇与五氧化二磷反应混合,进行酯化反应,生成双(季戊四醇磷酸酯)磷酸; 并将双(季戊四醇磷酸酯)磷酸与三聚氰胺或其衍生物混合,在溶剂的存在下进行季铵化,然后除去水,得到双(季戊四醇磷酸酯)磷酸的三聚氰胺盐。 在该方法中使用五氧化二磷作为反应物,使得不产生氯化氢,并且不需要回收三氯磷酸。 此外,在本发明的方法中,可以缩短酯化时间,并且可以避免引起爆炸的封闭反应体系中的高压。