Imidacloprid purification method

The invention discloses a purification method of imidacloprid, which comprises the steps of pretreatment, thermal separation, resin chromatographic column separation and cooling crystallization, and the step of resin chromatographic column separation is carried out at 50-80 DEG C. According to the p...

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Main Authors WANG TONGSHUN, JIN ZUOHONG, LYU ZHI, ZHANG ZHIXUE, LIU CUNJIANG, SUN HELI, LI LANFANG, FU HAIJIE, JANG OK-HYUN
Format Patent
LanguageChinese
English
Published 03.06.2022
Subjects
CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Summary:The invention discloses a purification method of imidacloprid, which comprises the steps of pretreatment, thermal separation, resin chromatographic column separation and cooling crystallization, and the step of resin chromatographic column separation is carried out at 50-80 DEG C. According to the purification method of the imidacloprid, provided by the invention, through mutual cooperation of the steps, the whole purification process does not generate wastewater, is low in energy consumption, non-toxic, green and environment-friendly, does not cause harm to staff, is low in cost and is suitable for large-scale industrialization. 本发明公开了一种吡虫啉的纯化方法，包括预处理、热分离、树脂层析柱分离和降温结晶步骤，其中，所述树脂层析柱分离步骤在50～80℃下进行。本发明提供的吡虫啉的纯化方法，通过各步骤之间的相互配合，使得整个纯化过程不产生废水，能耗低，无毒，绿色环保，对员工不会造成伤害，成本低，适于大规模工业化。
Bibliography:Application Number: CN202210252773