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A kind of preparation method of the glyphosate composition containing sulfate radical or bisulfate ion

A technology of bisulfate and glyphosate, which is applied in the fields of botanical equipment and methods, biocides, animal repellants, etc., can solve the problems of inability to prepare high-content glyphosate preparations, limited solubility of ammonium sulfate, etc. Reduce production equipment and labor input, save resources, and achieve excellent efficacy

Active Publication Date: 2011-12-28
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High glyphosate formulations cannot be prepared due to limited ammonium sulfate solubility
So far, there is no research report on the preparation of high-concentration preparations of glyphosate (calculated as glyphosate acid) greater than or equal to 20% by using the sulfuric acid oxidation method of diglyphosate

Method used

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  • A kind of preparation method of the glyphosate composition containing sulfate radical or bisulfate ion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1 Get 425g of bisglyphosate (96% content) in a stirred flask, add 260g sulfuric acid (98% content) and 0.5g lanthanum nitrate, heat up to 95°C ± 5°C, and react for 3-4 hours to no Bubbles are generated to obtain the mixed glyphosate mother liquor. In mixed glyphosate mother liquor, add isopropylamine salt 150g, and add alkyl glucoside 30g, naphthalene sulfonate 25g, thickener xanthan gum 1g, antifreeze agent ethylene glycol 30g, defoamer silicone 0.01g simultaneously, The remaining amount was replenished to 1000 g with water to obtain a 30% glyphosate (calculated as glyphosate acid) suspension containing bisulfate ions.

Embodiment 2

[0016] Example 2 Get 425g of bisglyphosate (96% content) in a stirred flask, add 630g sulfuric acid (98% content) and 0.5g cerium nitrate, heat up to 75°C ± 5°C, react for 3-4 hours to no Bubbles are generated to obtain the mixed glyphosate mother liquor. Add 25g of ammonia to the mixed glyphosate mother liquor, and at the same time add 30g of alkyl glycoside, 25g of naphthalene sulfonate, 1g of thickener xanthan gum, 30g of antifreeze ethylene glycol, 0.01g of antifoaming agent silicone, and the balance Make up to 1500g with water, promptly make the 20% glyphosate (calculated as glyphosate acid) suspension concentrate containing bisulfate ion.

Embodiment 3

[0017] Example 3 Take 425g of bisglyphosate (96% content) in a stirred flask, add 260g sulfuric acid (98% content) and 20g polyphosphoric acid, heat up to 130°C ± 5°C, and react for 1-2 hours until there are no bubbles Produced to obtain mixed glyphosate mother liquor. Add potassium hydroxide 150g in the mixed glyphosate mother liquor, and add alkyl glucoside 30g, naphthalene sulfonate 25g, thickener xanthan gum 1g, antifreeze agent ethylene glycol 30g, defoamer silicone 0.01g simultaneously, The remaining amount was replenished to 1000 g with water to obtain a 30% glyphosate (calculated as glyphosate acid) suspension containing bisulfate ions.

[0018] Two, the preparation of 30% glyphosate (calculated as glyphosate acid) aqua containing sulfate ion:

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Abstract

The invention relates to a preparation method of glyphosate water-based preparation containing sulfate or bisulfate ions. The glyphosate is derived from the glyphosate mixed solution obtained by oxidation of diglyphosate with sulfuric acid, or the glyphosate salt mixed solution formed after adding alkali. Then add a surfactant to the resulting mixed solution to prepare a water-based formulation of the glyphosate composition containing sulfate ions or bisulfate ions, and the mass percentage of glyphosate (calculated as glyphosate acid) in the formulation is greater than or equal to 20%, sulfate ion or hydrogen sulfate ion is greater than or equal to 20%, and the mass fraction ratio of glyphosate to acid radical ion or hydrogen sulfate ion is 1:2-2:1. The glyphosate preparation process of the present invention does not need to separate the original drug of glyphosate in advance, which greatly reduces the input of production equipment and labor, reduces the discharge of waste water in the production process, saves resources, is beneficial to environmental protection, and contains high Sulfate ions or bisulfate ions in the content greatly improve the efficacy, reduce the amount of glyphosate, and save resources.

Description

technical field [0001] The invention relates to a preparation method of a glyphosate preparation, in particular to a preparation method of a glyphosate water-based preparation containing sulfate ions or bisulfate ions. Background technique [0002] Glyphosate (glyphosate), scientific name N-(phosphonomethyl) glycine, N-(phosphonomethyl) aminoacetic acid (Phosphonomethyl Imino Acetic Acid), is an organophosphorus herbicide. As a non-selective, non-residue post-emergence herbicide, glyphosate is absorbed through plant leaves and non-woody stems and leaves, and is transmitted to all parts of the plant. Leaf weed is very effective. The most prominent feature of glyphosate is that it can be absorbed by stems and leaves and transmitted downwards to underground rhizomes and tillers, which is extremely destructive to the underground tissues of weeds. In my country, glyphosate has been widely used and is the most widely used herbicide in my country. However, during the use of glyp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N57/20A01N25/04A01N25/02A01P13/00
Inventor 卢柏强袁伏中曹明章
Owner SHENZHEN NOPOSION AGROCHEM
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