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Glyphosate triammonium and preparation method and application thereof

A technology of glyphosate and glyphosate acid, applied in the field of glyphosate triammonium, can solve problems such as end-user acceptability limitations, and achieve the effects of broadening the scope of use, reducing costs, and reducing the amount of free ammonium

Active Publication Date: 2010-12-01
ZHENJIANG JIANGNAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And the granted patent also believes that when the molar ratio of ammonia to glyphosate is 2 or greater, the end-user acceptability of using the glyphosate ammonium salt solution may be limited by the volatilization of excess ammonia

Method used

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  • Glyphosate triammonium and preparation method and application thereof
  • Glyphosate triammonium and preparation method and application thereof
  • Glyphosate triammonium and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Embodiment 1 prepares triammonium glyphosate

[0040] A kind of making of triammonium glyphosate is obtained through the following process: a, add water in the reactor with stirring and cooling device, add glyphosate acid in the reactor under stirring, make glyphosate Phosphonic acid is uniformly dispersed to form a suspension; wherein, the glyphosate acid addition is 23% (wt) of the whole suspension; b, slowly feed ammonia into the reactor, the mol ratio of glyphosate acid to ammonia The ratio is 1:2.5; since a large amount of heat will be generated during the reaction, the reactor is cooled to ensure that the temperature is stirred at 95°C. When passing ammonia gas until the reaction solution is transparent, continue to pass ammonia until the weight gain of the entire reaction system is equal to the measured amount of ammonia gas. At the same time, check the pH value of the reaction solution. The pH value is 7.3. Finish.

Embodiment 2

[0041] Embodiment 2 prepares triammonium glyphosate

[0042] A kind of making of triammonium glyphosate is obtained through the following process: a, add water in the reactor with stirring and cooling device, add glyphosate acid in the reactor under stirring, make glyphosate Phosphonic acid is uniformly dispersed to form a suspension; wherein, the glyphosate acid addition is 55% (wt) of the entire suspension; b, slowly add concentrated ammonia in the reactor, and the mol ratio of glyphosate acid to ammonia is 1 : 2.6; Since a large amount of heat will be generated during the reaction, the reactor is cooled to ensure that the temperature is stirred at 25°C. When concentrated ammonia water is added until the reaction liquid is transparent, continue to add concentrated ammonia water until the weight gain of the entire reaction system is equal to the measured concentrated ammonia water amount; at the same time, detect the pH value of the reaction liquid, and the pH value is 8, and...

Embodiment 3

[0043] Embodiment 3 prepares triammonium glyphosate

[0044] A kind of making of triammonium glyphosate is obtained through the following process: a, add water in the reactor with stirring and cooling device, add glyphosate acid in the reactor under stirring, make glyphosate Phosphonic acid is uniformly dispersed to form a suspension; wherein, the glyphosate acid addition is 39% (wt) of the entire suspension; b, slowly adding liquid ammonia to the reactor, the mol ratio of glyphosate acid to ammonia is 1 : 2.9; Since a large amount of heat will be generated during the reaction, the reactor is cooled to ensure that the temperature is stirred at 40°C. When liquid ammonia is added until the reaction liquid is transparent, continue to add liquid ammonia until the weight gain of the entire reaction system reaches the measured amount of liquid ammonia. The pH value of the reaction liquid is detected to be 9.3, and the stirring is continued until the reaction is completed.

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Abstract

The invention relates to gyphosate triammonium which is a compound shown as a structural formula IV. The invention also discloses a preparation method and theapplication of the compound in weeding, overcomes the poor water solubility of glyphosate acid, and completely neutralizes three acid groups of the glyphosate acid by ammonium ions to form gyphosate triammonium salt. The gyphosate triammonium has more excellent stability and greatly widens the use range of ammonium salt products of gyphosate. The conventional gyphosate monoammonium salt has lower solubility in water and is more sensitiveto the temperature and easy to generate the phenomena of icing and freezing during warehousing. The gyphosate triammonium salt provided by the invention has higher solubility in the water and reducesthe sensitiveness to the temperature. During warehousing at low temperature, gyphosate triammonium salt water aqua still stabilizes, greatly improves the adaptability of the product, and widens the use range of the products.

Description

technical field [0001] The invention relates to the technical field of herbicidal compounds, in particular to triammonium glyphosate, its preparation process and application. Background technique [0002] Glyphosate acid is one of the pesticide varieties with the largest output and sales in my country and the world. It is a broad-spectrum, high-efficiency, low-toxicity and excellent environmental compatibility herbicide. The principle of weeding is to spray glyphosate When the phosphonic acid solution reaches the leaves of the weeds, the weeds absorb the glyphosate solution, and under photosynthesis, it is transmitted to the roots, inhibiting the synthesis of plant protein, making the leaves of the weeds yellow and the roots necrotic, so as to achieve weed control Purpose. It is widely used in orchards, tea gardens, rubber plantations, non-cultivated land and no-till weeding before sowing or harvesting of crops. After the promotion of glyphosate-resistant transgenic crops, it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/38A01N57/20A01P13/00
Inventor 王伟任不凡周曙光秦龙胡江丽钱志刚李包友刘韬初秋亭佘慧玲
Owner ZHENJIANG JIANGNAN CHEM
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