Preparation method of glyphosate isopropylamine salt aqueous solution

A technology for glyphosate isopropylamine salt and isopropylamine, which is applied in the field of preparation of glyphosate isopropylamine salt solution, can solve the problems of flammability and volatility, poor performance of isopropylamine salt, high preparation process requirements, etc. , The effect of reducing surface tension and stabilizing process technology

Pending Publication Date: 2021-10-08
JIANGSU TENGLONG BIOLOGICAL PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, ammonium salt and isopropylamine salt of glyphosate have better herbicidal effects, but because isopropylamine has a low boiling point, is flammable and volatile, and belongs to Class B fire hazards, it has high requirements for the preparation process and the production process The resulting isopropylamine salt has poor performance and needs to be improved

Method used

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  • Preparation method of glyphosate isopropylamine salt aqueous solution

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preparation example Construction

[0023] Cooperate figure 1 Shown, the invention provides a kind of preparation method of glyphosate isopropylamine saline solution, comprises the steps:

[0024] Step 1, add glyphosate technical substance and isopropylamine with a molar ratio of 1:1 to 1.2 into the reactor, and add water into the reactor, the weight ratio of water to the aforementioned mixture is 3 to 5:1, mix and stir After uniformity, adjust the temperature of the reactor to 10-20°C and keep it for 20-45 minutes;

[0025] In the step 1, each ingredient can be mixed and stirred at one time, or can be added in batches;

[0026] Step 2, pour out the mixture obtained in step 1, and filter through a 100-180-mesh filter screen, and then put the filtered mixture into the reaction kettle;

[0027] Step 3, continue to add additives and water to the reaction kettle. At this time, the mass ratio of the added additives and water to the mixture is 1.5-3:7-10:1. Adjust the temperature of the reactor to 12-23°C and stir ...

Embodiment 1

[0029] Step 1, add glyphosate technical substance and isopropylamine with a molar ratio of 1:1.1 into the reactor at one time, and add water with a weight ratio of 3:1 to the aforementioned mixture in the reactor, mix and stir evenly, Adjust the temperature of the reactor to 10°C and keep it for 45 minutes;

[0030] Step 2, pour out the mixture obtained in step 1, and filter through a 120-mesh filter, and then put the filtered mixture into the reactor;

[0031] Step 3, continue to add ST-90 penetrant and water to the reactor, the mass ratio of ST-90 penetrant and water to the mixture added at this time is 1.5:8:1, adjust the temperature of the reactor to 20°C, stir 5min to obtain glyphosate isopropylamine saline solution.

Embodiment 2

[0033] Step 1, add glyphosate technical substance and isopropylamine with a molar ratio of 1:1 into the reactor, and add water with a weight ratio of 4:1 to the aforementioned mixture in the reactor, mix and stir evenly, and then react Adjust the temperature of the kettle to 12°C and keep it for 40 minutes; then add glyphosate technical substance and isopropylamine with a molar ratio of 1:1.15 into the reaction kettle, and then add glyphosate technical substance with a molar ratio of 1:1.15 Water with a weight ratio of 4:1 to isopropylamine, keep the temperature of the reactor at 12°C for 20 minutes;

[0034] Step 2, pour out the mixture obtained in step 1, and filter through a 110-mesh filter screen, and then put the filtered mixture into the reactor;

[0035] Step 3, continue to add TAE surfactant and water to the reactor, the mass ratio of the added TAE surfactant and water to the mixture is 1.5:10:1, adjust the temperature of the reactor to 23°C, stir for 7min, Obtain gly...

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Abstract

The invention discloses a preparation method of a glyphosate isopropylamine aqueous solution. The preparation method comprises the following steps: 1, mixing and stirring a glyphosate active compound, isopropylamine and water according to a molar ratio of 1: 1-1.2, and a weight ratio of the mixture of the glyphosate active compound and the isopropylamine to the water being 1: 3-5; 2, pouring out the mixture obtained in the step 1, filtering, and putting into a reaction kettle; and 3, continuing to add an auxiliary agent and water into the reaction kettle, controlling the mass ratio of the added auxiliary agent and water to the mixture in the step 2 at (1.5-3): (7-10): 1, and stirring to obtain the glyphosate isopropylamine salt aqueous solution, wherein the auxiliary agent is an ST-90 penetrating agent or a TAE surfactant. The glyphosate isopropylamine salt aqueous solution prepared by the preparation method has relatively good permeability, moisture retention, adhesiveness and adhesiveness, so that the comprehensive drug effect of the product is improved.

Description

technical field [0001] The invention belongs to the field of herbicide preparation technology, in particular to a preparation method of glyphosate isopropylamine saline solution. Background technique [0002] Glyphosate is a high-efficiency, low-toxicity, low-residue post-emergent high-efficiency herbicide. At present, the production forms of glyphosate mainly include 10% glyphosate water solution and 30% glyphosate amine saline solution , 41% glyphosate isopropylamine salt solution, 62% glyphosate isopropylamine salt, 68% glyphosate amine salt soluble granule and 50% glyphosate ammonium salt soluble powder, etc. [0003] As we all know, ammonium salt and isopropylamine salt of glyphosate have better herbicidal effects, but because isopropylamine has a low boiling point, is flammable and volatile, and belongs to Class B fire hazards, it has high requirements for the preparation process and the production process The performance of the isopropylamine salt formed is relativel...

Claims

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Application Information

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IPC IPC(8): A01N57/20A01N25/30A01N25/02A01P13/00
CPCA01N57/20A01N25/30A01N25/02
Inventor 肖建中
Owner JIANGSU TENGLONG BIOLOGICAL PHARMA
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