Method for preparing gyphosate solution from glyphosate raw material

A technology of technical medicine and water preparation, applied in the field of herbicides, can solve the problems of high toxicity of glyphosate dosage forms, greatly reduced herbicidal effect, and decreased yield, and achieve low production costs, high production safety, and good drug efficacy Effect

Inactive Publication Date: 2011-05-25
陈运谋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] (3) Due to the influence of additives, the toxicity of glyphosate dosage forms is high;
[0009] (4) When used in glyphosate-resistant gene crops, there is often a decline in yield;
[0011] In view of the above situation, some manufacturers who produce 41% isopropylamine saline have improved their production formula, and some manufacturers do not even add ethoxylated fatty amine, or add not enough
The weed killing effect of such products is naturally greatly reduced

Method used

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  • Method for preparing gyphosate solution from glyphosate raw material
  • Method for preparing gyphosate solution from glyphosate raw material
  • Method for preparing gyphosate solution from glyphosate raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0078] Put 320kg (1.797kmol) of glyphosate technical material with a purity of 95% into a 2000L reactor, add 200L of deionized water, and add 214kg (3.14kmol) of ammonia water with a concentration of 25% dropwise for about half the time while stirring. Hours, the temperature is controlled at 40C °-50C °, after the ammonia solution is added dropwise, it is incubated between 50C °-60C ° for one hour, and the pH value is controlled between 6.5-7.0 after the reaction is completed. Then add ammonium sulfate 50kg, glycine ethyl ester hydrochloride 40kg. Supplement the remaining amount of pigment-containing water, so that the preparation meets the requirement that N-phosphonic acid methylglycine accounts for 30% (weight) of the mass fraction. The product is packaged after precipitation to remove impurities. The product was 912kg (1.619kmol).

Embodiment 2

[0080] Put 320kg (1.797kmol) of glyphosate technical material with a purity of 95% into a 2000L reactor, add 250L of deionized water, and add 297.2kg (3.14kmol) of ammonia water with a concentration of 18% dropwise under stirring. The time is about For half an hour, the temperature was controlled at 30C°-45C°. After the ammonia solution was added dropwise, it was kept at 45C°-55C° for one hour. After the reaction, the pH value was controlled between 6.5-7.0. Then add ammonium sulfate 50kg, glycine ethyl ester hydrochloride 45kg. Supplement the remaining amount of pigment-containing water, so that the preparation meets the requirement that N-phosphonic acid methylglycine accounts for 30% (weight) of the mass fraction. The product is packaged after precipitation to remove impurities. 922kg (1.635kmol) of the product was obtained.

Embodiment 3

[0082] Put 320kg (1.797kmol) of glyphosate technical product with a purity of 95% into a 2000L reactor, add 240L of deionized water, and add 318kg (3.14kmol) of ammonia water with a concentration of 16.78% dropwise for about half the time while stirring Hours, the temperature is controlled at 35C°-55C°, after the ammonia solution is added dropwise, it is incubated between 55C°-65C° for one hour, and the pH value is controlled between 6.5-7.0 after the reaction is completed. Then add ammonium sulfate 45kg, glycine ethyl ester hydrochloride 50kg. Supplement the remaining amount of pigment-containing water, so that the preparation meets the requirement that N-phosphonic acid methylglycine accounts for 30% (weight) of the mass fraction. The product is packaged after precipitation to remove impurities. The product was 912kg (1.618kmol).

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Abstract

The invention relates to a method for preparing gyphosate solution from glyphosate raw material, comprising the following steps of: preparing materials according to 30% of gyphosate solution per ton, and feeding raw material comprising glyphosate of 95% of 320 kg; then taking deionized water of 160 L as a solvent, dropping industrial ammonia water with a concentration of 15% to 25% in stirring condition, and controlling the temperature between 35 DEG C and 60 DEG C for about half an hour; and then preserving the temperature between 50 DEG C and 65 DEG C for one hour, regulating the Ph value of the product to a scope of 6.5 to 7.0 when the reaction is ended, feeding ammonium sulfate of 50 kg as a solubilizer and a synergist, feeding glycine ethyl ester hydrochloride of 40 kg as an assistant, and finally feeding an industrial general pigment and diluting by using deionized water so as to obtain a gyphosate solution product with an active ingredient content of 30%. Compared with conventional method, the method provided by the invention has the advantages that the production device is simple, the reaction conditions are easy to be controlled, the security is high, the energy consumption is low, the yield is high, the three wastes are less and are easy to be treated, the economic benefit is obvious, and the method is suitable for the production of enterprises.

Description

Technical field: [0001] The invention belongs to the technical field of herbicides and discloses a method for preparing 30% glyphosate water by using glyphosate original drug. Background technique: [0002] In the prior art, the isopropylamine saline solution of glyphosate is prepared from the original drug of glyphosate with isopropylamine and an appropriate amount of deionized water, and 1%-12% of surfactant is added as a synergist to prepare 41% glyphosate isopropylamine saline solution. [0003] There are disadvantages: [0004] A. The use cost of isopropylamine is too high (high purchase cost, high transportation cost, high production cost and refrigeration required) [0005] B. The amount of surfactant added is between 1% and 12%. Represented by ethoxylated fatty amines, it has the following defects: [0006] (1) It has only a moderate effect on reducing surface tension; [0007] (2) The substance has mild effects on the skin and eyes; [0008] (3) Due to the inf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N57/20A01N25/04A01P13/00
Inventor 陈运谋
Owner 陈运谋
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