申请人:HEBEI THINK-DO ENVIRONMENT CO., LTD.
公开号:US20170121277A1
公开(公告)日:2017-05-04
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.
一种制备亚胺二琥珀酸螯合剂的方法,其中在常压下进行包括原料A、原料B、碱金属氢氧化物和水的反应,在pH值为6-12范围内和反应温度在65°C至沸点回流温度范围内进行,反应后得到的混合液体是含有亚胺二琥珀酸螯合剂的混合物。原料A是一种能够通过碱性水解得到马来酸盐的化合物;原料B是一种能够通过碱性水解得到天冬氨酸的化合物。在温和的反应条件下,短的反应时间和高的反应产率,该制备方法能够缩短生产过程,提高生产效率,降低生产成本,是一种高效、环保且非常适合工业规模生产的制备方法。