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Azoxystrobin microcapsule suspending agent and preparation method thereof

A microcapsule suspending agent, azoxystrobin technology, applied in the directions of botanical equipment and methods, fungicides, biocides, etc., can solve the problem of large application concentration of azoxystrobin, no synergist added, and short duration of efficacy. and other problems, to achieve the effect of consolidating the control effect, prolonging the validity period of the drug effect, and easy to control the process.

Inactive Publication Date: 2012-07-25
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, most of the formulations of azoxystrobin produced and used are suspension concentrates and emulsifiable concentrates, and the formula of azoxystrobin aqueous emulsion is also published, but the existing azoxystrobin aqueous emulsion still needs to use a certain amount of aromatic hydrocarbon organic solvents, and does not add suitable Synergist, and the control effect is poor, the duration of the drug effect is short, the application concentration of azoxystrobin is high, and the cost of control is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: 5% azoxystrobin microcapsule suspension.

[0022] Dissolve urea in formaldehyde, the weight ratio of urea and formaldehyde is 1:2, adjust the pH value to 8.5 with 10% NaOH solution, stir with a magnetic stirrer until clear, stir at a low speed at a temperature of 70°C, and keep warm React for 1 hour to generate viscous and transparent urea-formaldehyde resin, add deionized water equal to the total weight of urea and formaldehyde, and stir at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.

[0023] At room temperature, dissolve 5% azoxystrobin in 15% xylene, add 2% Nongru 600# to fully emulsify, and stir at 1000 rpm at a temperature of 30°C to fully disperse it.

[0024] Add an appropriate amount of urea-formaldehyde resin prepolymer aqueous solution to the above-mentioned azoxystrobin mixture solution under stirring at 1000 rpm, stir for 15 minutes to form a stable emulsion, then reduce the stirring rate to 500 rpm, a...

Embodiment 2

[0025] Example 2: 8% azoxystrobin microcapsule suspension.

[0026] Dissolve urea in formaldehyde, the weight ratio of urea and formaldehyde is 1:2.5, adjust the pH value to 8.5 with 10% NaOH solution, stir with a magnetic stirrer until clear, and stir at a low speed at a temperature of 70°C, keep warm After reacting for 1.5 hours, a viscous and transparent urea-formaldehyde resin is formed, adding deionized water equal to the total weight of urea and formaldehyde, and stirring at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.

[0027] At room temperature, dissolve 8% azoxystrobin in 15% dimethylformamide, add 7% agricultural milk 700# to fully emulsify, and stir at 1500 rpm at a temperature of 30°C to make it fully dispersion.

[0028] Add an appropriate amount of urea-formaldehyde resin prepolymer aqueous solution to the above-mentioned azoxystrobin mixture solution stirred at 1500 rpm, stir for 15 minutes to form a stable emulsio...

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PUM

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Abstract

The invention discloses an Azoxystrobin microcapsule suspending agent and a preparation method of the Azoxystrobin microcapsule suspending agent. The Azoxystrobin microcapsule suspending agent is composed of the following components in percentage by weight: 1-10% of Azoxystrobin, 3-20% of capsule core solvent, 5-20% of capsule wall material, 1-10% of emulsifying agent, 1-5% of dispersant, 0.5-7% of antifreezing agent, 0.1-10% of pH regulator and the balance of deionized water. The invention also discloses a preparation method of the Azoxystrobin microcapsule suspending agent. According to the invention, Azoxystrobin is prepared into a new dosage form, the defects of oil emulsion, wettable powder, suspending agent and other dosage forms are overcome, the use cost of the farmer is reduced, the environmental pollution, the pesticide toxicity and the product cost are also reduced, and the safety and effect of the pesticide are improved.

Description

technical field [0001] The invention relates to an agricultural fungicide and a preparation method thereof, in particular to an azoxystrobin microcapsule suspension and a preparation method thereof. Background technique [0002] Chemical control is an important means for humans to prevent and control agricultural and forestry diseases and insect pests. Chemical pesticides play a very important role in increasing agricultural production and income. and social issues. It is only due to the chemical pesticide itself, and to a large extent due to the unreasonable processing and application methods of the pesticide formulation. According to reports, the utilization rate of conventional pesticides is only 20% to 30%, while the loss rate through various channels is as high as 50% to 60%, which is not only a waste in economy, but also causes extensive environmental pollution. Therefore, it has become one of the future development directions of pesticide dosage forms to develop new...

Claims

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Application Information

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IPC IPC(8): A01N43/54A01N25/04A01P3/00
Inventor 曹希敏孟宪秋王龙江
Owner GUANGDONG ZHONGXUN AGRI TECH
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