Trifloxystrobin microcapsule suspension and preparation method thereof

A technology of microcapsule suspension and trifloxystrobin, which is applied in the field of pesticides, can solve the problems of unfavorable drug absorption and conduction, large particle size of the drug, and short duration of drug effect, so as to prolong the effective period of drug effect, prevent and control the ecological environment, and consolidate The effect of the control effect

Inactive Publication Date: 2012-08-01
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are some obvious deficiencies in the existing dosage forms, such as the presence of a large amount of organic solvents in the emulsifiable concentrate preparations, which is a potential pressure on the environment; wettable powders are prone to dust pollution during production, transportation, and use, and the processing process consumes energy. Large particle size affects the absorption and conduction of pharmaceuticals; the production process of water-dispersible granules and dry suspensions is prone to dust pollution, energy consumption, and low production efficiency; the production process of suspensions consumes energy and has low efficiency. Conducive to the absorption and conduction of the medicine, under the action of natural gravity, the medicine liquid is easy to settle to the bottom
Trifloxystrobin microcapsules still need to use a certain amount of aromatic hydrocarbon organic solvents, and no suitable synergist is added, the control effect is poor, the drug effect lasts for a short time, the application concentration of trifloxystrobin is high, and the control cost is high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: 5% trifloxystrobin microcapsule suspension.

[0025] Dissolve urea in formaldehyde, the weight ratio of urea and formaldehyde is 1:2, adjust the pH value to 8.5 with 10% sodium hydroxide aqueous solution, stir at a low speed at 70°C, and keep warm for 1 hour to obtain clear and transparent urea - Aqueous solution of formaldehyde resin prepolymer.

[0026] Dissolve 5% trifloxystrobin technical material in 15% xylene, add 2% Nongru 1601# to fully emulsify, and stir at 30°C at a speed of 1000 rpm to make it fully dispersed to obtain trifloxystrobin mixture solution.

[0027] Add the urea-formaldehyde resin prepolymer aqueous solution to the trifloxystrobin mixture solution stirred at 1000 rpm, stir for 15 minutes to form a stable emulsion, then reduce the stirring rate to 500 rpm, and slowly add an appropriate amount of Acetic acid, adjust its pH value to 5, and the temperature rises to 60°C to solidify the capsule wall. After 2 hours of reaction, the capsule ...

Embodiment 2

[0028] Example 2: 10% trifloxystrobin microcapsule suspension.

[0029] Dissolve urea in formaldehyde, the weight ratio of urea and formaldehyde is 1:2.5, adjust the pH value to 8.5 with 10% sodium hydroxide aqueous solution, stir at a low speed at 70°C, and keep warm for 1 hour to obtain clear and transparent urea - Aqueous solution of formaldehyde resin prepolymer.

[0030] Dissolve 10% trifloxystrobin technical material in 18% xylene, add 7% agricultural milk 700# to fully emulsify, and stir at 30°C at a speed of 1000 rpm to make it fully dispersed to obtain trifloxystrobin mixture solution.

[0031] Add the urea-formaldehyde resin prepolymer aqueous solution to the trifloxystrobin mixture solution stirred at 1000 rpm, stir for 15 minutes to form a stable emulsion, then reduce the stirring rate to 500 rpm, and slowly add an appropriate amount of Acetic acid, adjust its pH value to 5, and the temperature rises to 60°C to solidify the capsule wall. After 2 hours of reaction...

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PUM

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Abstract

The invention discloses trifloxystrobin microcapsule suspension and a preparation method thereof. The trifloxystrobin microcapsule suspension comprises, in weight percentage, 1%-10% of trifloxystrobin, 3%-20% of capsule core solvent, 5%-30% of capsule shell material, 2%-10% of emulsifier, 1%-5% of dispersant, 0.1%-5% of antifreezing agent, 0.1%-10% of pH regulator, and the balance of deionized water. The invention further discloses the preparation method of the trifloxystrobin microcapsule suspension. The trifloxystrobin microcapsule suspension is high in physiochemical stability and high in emulsification dispersion, and is efficient, wide-spectrum, low-toxic and pollution-free miticide. The problem that combination of the trifloxystrobin with soil affects drug effect is solved. In addition, consumption is lowered under slow control, so that drug validity is prolonged, control effect is enhanced, the pesticide is less apt to be damaged by atmosphere, sunlight and rainwater and less easy to run off, underwater pollution is controlled effectively, and change of ecological environment is prevented.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a trifloxystrobin 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 dosage forms that ar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/50A01N25/28A01P3/00
Inventor 曹希敏孟宪秋王龙江刘华金袁彩斌
Owner GUANGDONG ZHONGXUN AGRI TECH
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