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Production method of clodinafop-propargyl microemulsion

A production method and technology of clodinafop-propargyl, applied in the production field of clodinafop-propargyl microemulsion, can solve problems such as difficult absorption of weeds, increased usage of clodinafop-propargyl, pollution of surrounding environment, etc., so as to improve the control effect and the utilization of medicaments efficiency, improve dispersion uniformity, and reduce environmental pollution

Inactive Publication Date: 2013-07-10
新沂市永诚化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used dosage form of clodinafop-propargyl is wettable powder. The wettable powder is a pesticide dosage form obtained by air-flow pulverization after mixing with clodinafop-propargyl as the main ingredient, additives and fillers such as kaolin. Larger particles are attached to the surface of weeds, and the weeds are not easy to absorb, resulting in an increase in the relative usage of clodinafop-propargyl, a large loss of active ingredients, a long degradation time, and a long-term pollution to the environment; due to wettable powder Jet milling is used in the processing process, and dust is inevitably generated during jet milling, which not only endangers producers, but also drifts and pollutes the surrounding environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] In the first stirring tank, first add acetone that accounts for 5% of the total amount, and start stirring at room temperature. The clodinafop-propargyl that accounts for 12% of the total amount is stirred for 1.5-2 hours; in the second stirring tank, firstly add water accounting for 46% of the total amount, and start stirring at room temperature, and the speed of the agitator is 40-60 rpm / min, while stirring, add 15% of the total amount of sodium lauryl sulfate, and stir until the sodium lauryl sulfate is completely dissolved; at room temperature, send the mixture obtained in step (1) into a high-speed stirring tank , adjust the speed of the agitator in the high-speed stirring tank to 210-220 rpm, slowly add the sodium lauryl sulfate aqueous solution obtained in step (2) into the high-speed stirring tank, and stir for 1.2-1.5 hours to obtain the finished product.

Embodiment 2

[0023] In the first stirring tank, first add acetone that accounts for 7.5% of the total amount, and start stirring at room temperature. The clodinafop-propargyl that accounts for 15% of the total amount is stirred for 1.5-2 hours; in the second stirring tank, firstly add water accounting for 40% of the total amount, and start stirring at room temperature, and the speed of the agitator is 40-60 rpm / min, add sodium lauryl sulfate accounting for 12.5% ​​of the total amount while stirring, and stir until sodium lauryl sulfate is completely dissolved; send the mixture obtained in step (1) into a high-speed stirring tank at room temperature , adjust the speed of the agitator in the high-speed stirring tank to 210-220 rpm, slowly add the sodium lauryl sulfate aqueous solution obtained in step (2) into the high-speed stirring tank, and stir for 1.2-1.5 hours to obtain the finished product.

Embodiment 3

[0025] In the first stirring tank, first add acetone that accounts for 10% of the total amount, and start stirring at room temperature. The clodinafop-propargyl that accounts for 18% of the total amount is stirred for 1.5-2 hours; in the second stirring tank, firstly add water that accounts for 34% of the total amount, and start stirring at room temperature, and the speed of the agitator is 40-60 rpm / min, while stirring, add 10% of the total amount of sodium lauryl sulfate, and stir until the sodium lauryl sulfate is completely dissolved; at room temperature, send the mixture obtained in step (1) into a high-speed stirring tank , adjust the speed of the agitator in the high-speed stirring tank to 210-220 rpm, slowly add the sodium lauryl sulfate aqueous solution obtained in step (2) into the high-speed stirring tank, and stir for 1.2-1.5 hours to obtain the finished product.

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PUM

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Abstract

The invention discloses a production method of clodinafop-propargyl microemulsion, which belongs to the field of herbicides. The production method adopts clodinafop-propargyl, a solvent, a cosolvent, a surface active agent and water as raw materials, and comprises the following steps of: (1) mixing the clodinafop-propargyl, the solvent and the cosolvent; (2) mixing the surface active agent and the water; and (3) mixing the mixture in the step (1) and the mixture in the step (2), thus obtaining a finished product, namely the clodinafop-propargyl microemulsion. The production method disclosed by the invention has a series of advantages of simple process, moderate reaction condition, no discharge of polluting wastes, good product quality and the like; and the clodinafop-propargyl microemulsion can be used for effectively controlling weeds such as alopecurus myosuroides, wild oats, hollow oats, brachiaria mutica, crab grass, barnyard grass, goosegrass, Italian ryegrass, pigweed, rough stalked blue grass, setaria glauca, green bristlegrass, sorghum halepense (linn.) pers and sorghum halepense in cornfields.

Description

technical field [0001] The invention belongs to the field of herbicides, in particular to a production method of clodinafop-propargyl microemulsion. Background technique [0002] Clodinafop propargyl, also known as top herbicide, Maiji, the chemical name is R-2-[4-(5-chloro-3-fluoro-2-oxypyridine)-phenoxy]-propionic acid, propynyl ester , the molecular formula is C17H13ClFNO4, the molecular weight is 317.5, the appearance of clodinafop-propargyl is light yellow solid powder, the melting point is 48-57°C, the specific gravity is 1.37, the solubility in water at 20°C is 2.5 mg / L, and it can be dissolved in ethanol, ether, acetone, chloroform, etc. Organic solvent, decomposition temperature 105°C, decomposes under strong acid and strong alkali conditions. Clodinafop-propargyl is an aryloxyphenoxypropionic acid herbicide, which can effectively inhibit the biosynthesis of esters and become an acetyl cosensitizer A hydroxylase inhibitor, which is quickly degraded into free acid p...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01N25/04A01P13/00
Inventor 应冰如刘慧
Owner 新沂市永诚化工有限公司
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