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硝基乙烷制肟和肟缩合成酯的酰氨水相法简化工艺已用于工业生产。合计生产灭多威原粉200吨以上,乳剂1000吨以上,防治棉花害虫施用量为146百万亩次。获增支节收经济效益2000万元以上。该技术为独家首创,国内外创新。用硝基乙烷短程常压均相反应合成天多威肟后,肟与酰氨缩合之水相工艺无需使用任何有机溶剂,故省略产品的去溶剂工艺,节约成本且
Ammonia aqueous phase simplification of nitroethane to oxime and oxime synthesis esters has been used in industrial production. In total, more than 200 tons of original powder of methomyl can be produced, and more than 1,000 tons of emulsion can be used. The amount of cotton pests to be controlled is 146 million mu. Increased expenditures and economic benefits by more than 20 million yuan. This technology is an exclusive initiative, domestic and foreign innovation. After the synthesis of tiantenose from the homogeneous reaction of nitroethane at short range atmospheric pressure, the aqueous phase process of the condensation of hydrazine and acylamide does not require the use of any organic solvent. Therefore, the solvent removal process of the product is omitted, and the cost is saved.