Indoxacarb microcapsule suspension and preparation method thereof

A technology of microcapsule suspension and indoxacarb, which is applied in botany equipment and methods, insecticides, biocides, etc., can solve the problems of short duration and achieve long duration, pollution reduction, and human and animal safety Effect

Inactive Publication Date: 2012-07-04
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the duration of indoxacarb currently used to control pests is too short, which causes farmers to frequently use pesticides and continuously increase the dosage of pesticides. In many areas, resistance to pesticides has been caused, and it has also caused great pressure on the environment. Therefore, prolonging the duration of the medicament becomes an urgent problem to be solved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: 2% indoxacarb microcapsule suspension.

[0030] Preparation method of urea-formaldehyde resin prepolymer aqueous solution: dissolve urea into formaldehyde, the weight ratio of urea and formaldehyde is 1:2.5, adjust the pH value to 8 with sodium hydroxide, stir at a low speed at a temperature of 70°C, and keep warm for 1 hours, a viscous and transparent urea-formaldehyde resin is generated, and deionized water equal to the total weight of urea and formaldehyde is added, and stirred at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.

[0031] Completely dissolve 2% indoxacarb in 5% xylene at room temperature, add 10% urea-formaldehyde resin prepolymer aqueous solution while stirring, and shear at 2000 rpm for 10 minutes to obtain a stable O / W emulsion. Reduce the rotation speed to 1000 rpm, add dilute hydrochloric acid in 5 batches within 1 hour to adjust the pH value to 2.0, polycondensation reaction occurs, gradually ra...

Embodiment 2

[0032] Example 2: 5% indoxacarb microcapsule suspension.

[0033] Preparation method of urea-formaldehyde resin prepolymer aqueous solution: dissolve urea into formaldehyde, the weight ratio of urea and formaldehyde is 1:2, adjust the pH value to 8.5 with sodium hydroxide, stir at a low speed at a temperature of 70°C, and keep warm for 1 hours, a viscous and transparent urea-formaldehyde resin is generated, and deionized water equal to the total weight of urea and formaldehyde is added, and stirred at a low speed to obtain a transparent urea-formaldehyde resin prepolymer aqueous solution.

[0034] Completely dissolve 5% indoxacarb in 10% xylene at room temperature, add 25% urea-formaldehyde resin prepolymer aqueous solution while stirring, and shear at 1500 rpm for 20 minutes to obtain a stable O / W emulsion. Reduce the rotation speed to 800 rpm, add dilute hydrochloric acid in 5 batches within 1 hour to adjust the pH value to 2.0, polycondensation reaction occurs, gradually ra...

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PUM

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Abstract

The invention discloses an indoxacarb microcapsule suspension and a preparation method thereof. The suspension comprises the following components by weight percent: 1-10% of indoxacarb, 3-20% of capsule core solvents, 5-30% of capsule wall material, 3-10% of emulsifying agents, 1-5% of dispersing agents, 0.1-10% of pH regulator and the balance of deionized water. The invention also discloses the preparation method of the indoxacarb microcapsule suspension. The product has the advantages of low cost, stable performance, good insecticidal effect, long efficacy duration, low toxicity, environmental friendliness, safety for people and livestock and capability of meeting the requirement for nuisanceless control of pests.

Description

technical field [0001] The invention relates to an agricultural insecticide and a preparation method thereof, in particular to an indoxacarb microcapsule suspension and a preparation method thereof. Background technique [0002] Chemical control is an important means of preventing and controlling agricultural and forestry diseases and insect pests. Chemical pesticides play a very important role in increasing agricultural production and income. However, the use of pesticides, while ensuring food safety production, also brings a series of environmental and Social Issues. Not only due to the chemical pesticide itself, but also to a large extent due to the unreasonable processing and application methods of pesticide formulations. According to reports, the utilization rate of conventional pesticides is only 20% to 30%, and the loss rate through various channels is as high as 50% to 60%. This is not only a waste of economy, but also causes extensive environmental pollution. Ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/38A01N25/04A01P7/04
Inventor 王龙江孟宪秋刘华金曹希敏袁彩斌
Owner GUANGDONG ZHONGXUN AGRI TECH
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