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Preparation method of glyphosate and triclopyr aqueous solution

A clopyroxy acetic acid aqueous solution, a technology of clopyroxy acetic acid, which is applied in the fields of botany equipment and methods, herbicides and algicides, chemical instruments and methods, etc., and can solve the problem of not being easy to control the active ingredient content of the composition , proportion, water agent stability can not be guaranteed, complex process operation and other issues, to achieve stable quality, reduce treatment costs, and good control effect

Active Publication Date: 2018-11-13
LIER CROPSCIENCE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is to mix the active ingredients into a suitable dosage form for easy use. For example, in the compositions and preparation methods disclosed in patents CN101485310A and CN104957171A, the original drugs are mixed and prepared into compositions. This kind of mixing is easy to use and easy to operate. Simple and other advantages, but the stability of the water preparation prepared by this method can not be guaranteed, so it will have a certain impact on the shelf life of the product; the second is to use the carboxylic acid group in clopyroxyacetic acid and the dimethyl Amine salt reaction is prepared into a mixture of glyphosate and clopyroxyacetic acid, such as described in CN104447862A
However, this process is complicated to operate, and it is necessary to prepare glyphosate salt first, then mix the prepared salt with triclopyr to prepare a mixed solution, and finally prepare solid granules as required
In the preparation process, there will be defects that various materials are not easy to control, such as not easy to control the content and ratio of each active ingredient in the composition, etc.

Method used

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  • Preparation method of glyphosate and triclopyr aqueous solution
  • Preparation method of glyphosate and triclopyr aqueous solution
  • Preparation method of glyphosate and triclopyr aqueous solution

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Example 1: 45% glyphosate triethylamine·triclopyr triethylamine aqueous solution (prepared in laboratory).

[0038] According to the needs of the reaction, weigh 40% glyphosate (calculated as acid), 5% triclopyr, 10% alkylphenol polyoxyethylene ether, 1% silicone defoamer, and cosolvent ammonium sulfate 2%, the rest is water.

[0039] First add triclopyr in the reaction device, start stirring, then slowly add triethylamine dropwise, the reaction temperature is 70 ℃, until the solution is colorless to light yellow clear and transparent liquid, the reaction stops when the pH is about 8.0; Then add glyphosate acid, stir well and slowly add triethylamine, the pH value of the whole system is controlled at about 6.0-6.5, the solution is light yellow to yellow transparent liquid, there is no solid particles, and finally the cosolvent ammonium sulfate is added. Surfactant alkylphenol polyoxyethylene ether and defoamer silicone are obtained when the preparation is a light yellow to ...

Embodiment 2

[0040] Example 2: 45% glyphosate triethylamine·triclopyr triethylamine aqueous solution (prepared by pilot experiment)

[0041] The raw materials are the same as in Example 1, except that the preparation process is scaled up.

[0042] The pilot production of glyphosate triethylamine·triclopyroxyacetic acid triethylamine aqueous solution includes material preparation, dosing of the original drug, salt formation reaction, supplementary additives, dissolution cycle, filtration cycle, central control analysis, filtration storage, Product packaging, finished product analysis, and collection and treatment of the three wastes required for environmental protection.

[0043] 1) Material preparation

[0044] Go to the warehouse 1-2 days in advance to collect the raw materials needed for the batch of production.

[0045] 2) Add the original medicine

[0046] Close the bottom valve, manhole cover and all pipeline valves on the reactor (except the vent valve), open the soft water pipeline valve, and...

Embodiment 3

[0069] Example 3: Field efficacy test

[0070] Test agent: the water agent of Example 1-2, Comparative Example 1-2.

[0071] Control agent: 46% glyphosate isopropylamine saline (control agent 1), 45% triclopyr in water (control agent 2).

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PUM

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Abstract

The invention relates to a preparation method of a glyphosate and triclopyr aqueous solution. The method includes the following steps: 1, performing a reaction on the triclopyr and an organic base toprepare a salt of the triclopyr; 2, adding glyphosate acid, evenly stirring the mixture, and slowly adding the organic base; and 3, adding a cosolvent, a surfactant, a defoamer and other auxiliary agents to prepare the aqueous solution. The prepared aqueous solution has good stability and has good control effect on weeds.

Description

Technical field: [0001] The invention relates to a preparation method of glyphosate and triclopyr aqua. technical background: [0002] The composition of glyphosate and triclopidine has a good control effect on weeds in non-arable land. There are generally two methods for preparing the composition involving glyphosate and triclopidine. One is to mix the active ingredients into a suitable dosage form for convenient use. For example, the compositions and preparation methods disclosed in patents CN101485310A and CN104957171A are all prepared by mixing the original drugs into a composition. This mixing has convenient use and operation. Simple and other advantages, but the stability of the water preparation prepared by this method cannot be guaranteed, so it will have a certain impact on the shelf life of the product; the second is to use the carboxylic acid group in the trichloxyacetic acid and the dimethyl phosphate of glyphosate The amine salt is reacted to prepare a mixture of gl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38C07D213/64A01N57/20A01N43/40A01N25/02A01P13/00
CPCA01N25/02A01N43/40A01N57/20C07D213/64C07F9/38A01N2300/00
Inventor 梁灵罗小娟左元明
Owner LIER CROPSCIENCE CO LTD
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