Continuous synthesis of glyphosate by dimethyl ester

A technology of dimethyl ester and glyphosate, which is applied in the field of continuous production of glyphosate by dimethyl ester method, can solve problems such as unreasonable energy utilization, lack of continuity in production, and small capacity of a single set of equipment, and achieve leakage points and Reduced contact points with the outside world, strong airtightness, and reduced equipment utilization
CN1939927AActive Publication Date: 2007-04-04ZHEJIANG XINAN CHEM INDAL GROUP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHEJIANG XINAN CHEM INDAL GROUP
Publication Date
2007-04-04

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Abstract

Continuous synthesis of glyphosate by dimethyl ester is carried out by taking paraformaldehyde, amino acetic acid and dimethyl ester as raw materials to obtain synthetic liquid, acidizing it with hydrochloric acid, mixing, entering into hydrolytic reactive zone, reacting in hydrolytic reactor continuously, acidizing synthetic liquid, hydrolyzing in hydrolytic reactive zone continuously, forming into glyphosate salt, batching continuously and neutralization crystallizing to obtain the final product. It realizes continuous hydrolysis and simplifies process and can be used in large-scale production.
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Description

technical field

[0001] The invention relates to the research field of continuous production of glyphosate by dimethyl ester method. Background technique

[0002] Glyphosate is a low-toxicity, high-efficiency, broad-spectrum herbicide. It was first successfully developed by Monsanto Company of the United States in 1974 and has applied for patent protection in many countries around the world. In the mid-to-late 1990s, with the successive expiration of its patent protection in various countries in the world and the widespread planting of glyphosate-resistant transgenic crops, the application of glyphosate has developed rapidly, becoming the largest and fastest-growing pesticide variety.

[0003] There are many synthetic methods of glyphosate, but currently only two industrialized process routes are used, namely the IDA process and the alkyl ester process. The alkyl ester process is the process route adopted by most of the production enterprises in our country. Alkyl ester pro...

Claims

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