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    • 8. 发明公开
    • METHOD FOR PREPARING IMINODISUCCINATE CHELATING AGENT
    • 制备亚胺基琥珀酸螯合剂的方法
    • EP3127896A1
    • 2017-02-08
    • EP15772328.9
    • 2015-02-28
    • Hebei Think-Do Environment Co.,Ltd.
    • LI, WenxiXING, Zhenping
    • C07C229/24C07C227/18
    • C07C227/18C07C229/24
    • A method for preparing an iminodisuccinate chelating agent, wherein a reaction comprising raw material A, raw material B, an alkali metal hydroxide, and water is carried out under ambient pressure, and at a pH in the range of 6-12 and a reaction temperature ranging from 65°C to a boiling reflux temperature, and the mixed liquid obtained after the reaction is a mixture containing the iminodisuccinate chelating agent. The raw material A is a compound capable of obtaining a maleate through alkaline hydrolysis; and the raw material B is a compound capable of obtaining an aspartic acid through alkaline hydrolysis. With mild reaction conditions, a short reaction time and a high reaction yield, the preparation method is able to shorten the production process, improve the production efficiency, and reduce the production cost, and it is truly a preparation method which is highly efficient, environmentally friendly, and extremely suitable for industrial scale production.
    • 制备亚氨基二琥珀酸盐螯合剂的方法,其中包括原料A,原料B,碱金属氢氧化物和水的反应在环境压力下进行,并且在6-12的pH和反应温度 在65℃至沸腾回流温度范围内,并且反应后获得的混合液体是含有亚氨基二琥珀酸盐螯合剂的混合物。 原料A是能够通过碱水解获得马来酸盐的化合物, 原料B是能够通过碱水解获得天冬氨酸的化合物。 该方法反应条件温和,反应时间短,反应收率高,能够缩短生产工艺,提高生产效率,降低生产成本,是一种真正高效,环保的制备方法 友好,非常适合工业规模生产。