Method for preparing diethylacetonitrile in imino group

A technology of iminodiacetonitrile and hydroxyacetonitrile, which is applied to the preparation of carboxylic acid nitriles, the preparation of organic compounds, chemical instruments and methods, etc., can solve the problems of large amount of auxiliary raw material ammonium sulfate, harsh reaction conditions, and difficult handling, and achieve The preparation process is continuous and stable, the yield and quality are improved, and the stability is good
CN101050191AInactive Publication Date: 2007-10-10四川省天然气化工研究院
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
四川省天然气化工研究院
Publication Date
2007-10-10
Estimated Expiration
Not applicable · inactive patent
Patent Text Reader

Abstract

This invention provides a method for preparing iminodiacetonitrile. The method comprises: reacting hydroxyacetonitrile and 95-100 wt. % liquid ammonia to obtain iminodiacetonitrile. The method has such advantages as high yield, high product quality, and continuous and stable process.
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Description

Technical field:

[0001] The invention relates to a preparation method of iminodiacetonitrile, in particular to a method for preparing iminodiacetonitrile by reacting hydroxyacetonitrile with high-concentration liquid ammonia. Background technique:

[0002] Iminodiacetonitrile (CAS 628-87-5), white or light gray needle-like crystalline powder, melting point: 74-76°C. Soluble in water, soluble in organic solvents such as methanol, ethanol and chloroform, flammable and toxic. It is mainly used in the manufacture of glyphosate and other pesticides, and also in the fields of pesticides, synthetic resins, water treatment and electronic appliances.

[0003] Existing preparation methods about iminodiacetonitrile are more, but there are some weak points:

[0004] 1. Use hydrocyanic acid, hexamethylenetetramine and formaldehyde as raw materials. That is, under the conditions of above 130°C, 1Mpa, and a residence time of 1-2 minutes, the mixed aqueous solution of hydrocyanic acid, h...

Claims

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