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Microcapsule suspension-suspending agent containing efficient cyhalothrin and sulfoxaflor and preparation method thereof

A technology of high-efficiency cyhalothrin and microcapsule suspension, which is applied in the field of pesticides to achieve the effects of delaying the generation of drug resistance, prolonging the service life and improving storage stability

Inactive Publication Date: 2017-10-10
北京明德立达农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Beta-cyhalothrin and sulfoxaflor can only exert their respective effects when used alone, and there are obvious defects in functionality and usability

Method used

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  • Microcapsule suspension-suspending agent containing efficient cyhalothrin and sulfoxaflor and preparation method thereof
  • Microcapsule suspension-suspending agent containing efficient cyhalothrin and sulfoxaflor and preparation method thereof
  • Microcapsule suspension-suspending agent containing efficient cyhalothrin and sulfoxaflor and preparation method thereof

Examples

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preparation example Construction

[0020] The invention provides a preparation method of a microcapsule suspension-suspension agent containing lambda-cyhalothrin and sulfoxaflor, wherein the preparation method may include the following steps: S1, beta-cyhalothrin, The inert solvent oil and the emulsifier are mixed and ground until the D90 value is less than 5 μm to obtain the first material; S2, the first material obtained in step S1 can be uniformly mixed with the urea-formaldehyde resin prepolymer aqueous solution to obtain the second material; S3. A buffer solution can be added to the second material obtained in step S2 and mixed evenly to adjust the pH value of the second material to 5-7 to obtain a third material; S4. The second material can be obtained in step S3. Add an acidic pH adjuster to the third material and mix evenly to adjust the pH of the third material to 2-5.5 to obtain a fourth material; S5, the fourth material obtained in step S4 can be solidified polycondensation to obtain a solidified pol...

Embodiment 1

[0042] Mix urea with a formaldehyde aqueous solution with a concentration of 40% by weight, and react for 1.5 hours at a pH value of 8 and a temperature of 70° C.; add water to dilute to obtain an aqueous solution of urea-formaldehyde resin prepolymer, wherein the formaldehyde and urea The molar ratio is 1:0.5, and the volume ratio of water and formaldehyde solution is 1:2.

[0043] Mix beta-cyhalothrin, methyl oleate and sorbitan monostearate polyoxyethylene ether evenly, and grind until the D90 value is below 5 microns to obtain the first material, wherein the beta-chlorine The weight ratio of cyfluthrin to methyl oleate and sorbitan monostearate polyoxyethylene ether is 1:3:0.05.

[0044] The obtained urea-formaldehyde resin prepolymer aqueous solution and the first material are mixed uniformly to obtain the second material, wherein the weight ratio of the urea-formaldehyde resin prepolymer aqueous solution and the first material is 1:3; at room temperature, Add the acetic...

Embodiment 2

[0048] Mix urea with a formaldehyde aqueous solution with a concentration of 35% by weight, and react for 1.0 h at a pH value of 8 and a temperature of 70° C.; add distilled water to dilute to obtain an aqueous solution of urea-formaldehyde resin prepolymer, wherein the formaldehyde and urea The molar ratio is 1:0.5, and the volume ratio of water and formaldehyde solution is 1:2.

[0049] Mix high-efficacy cyhalothrin, soybean oil and sorbitan monostearate polyoxyethylene ether, and grind until the D90 value is below 5 microns to obtain the first material, wherein the high-efficiency chlorofluorocyano The weight ratio of permethrin to soybean oil and sorbitan monostearate polyoxyethylene ether is 1:2.5:0.05.

[0050]The obtained urea-formaldehyde resin prepolymer aqueous solution and the first material are mixed uniformly to obtain the second material, wherein the weight ratio of the urea-formaldehyde resin prepolymer aqueous solution and the first material is 1:5; at room tem...

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Abstract

The invention discloses a microcapsule suspension-suspending agent containing efficient cyhalothrin and sulfoxaflor and a preparation method thereof. The preparation method comprises the following steps: mixing efficient cyhalothrin, inert solvent and emulsifying agent and then grinding to obtain a first material; mixing the first material with a urea-formaldehyde resin prepolymer aqueous solution to obtain a second material; adding a buffering solution into the second material to obtain a third material; adding an acidic pH value regulator into the third material to obtain a fourth material; curing and poly-condensing the fourth material, regulating the pH value of the cured and poly-condensed product to be neutral to obtain an efficient cyhalothrin microcapsule suspending agent; mixing the efficient cyhalothrin microcapsule suspending agent with a sulfoxaflor suspending agent, and then adding into a third dispersing agent and uniformly mixing. The preparation method disclosed by the invention can obviously promote the storage stability and the crop pest control effect of the microcapsule suspension-suspending agent containing efficient cyhalothrin and sulfoxaflor.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a microcapsule suspension-suspension agent containing lambda-cyhalothrin and sulfoxaflor and a preparation method thereof. Background technique [0002] Lambda-cyhalothrin is a high-efficiency, broad-spectrum, and quick-acting pyrethroid insecticide and acaricide. It mainly has contact and stomach poisoning effects, and has no systemic effect. Its mechanism of action is to inhibit the conduction of insect nerve axons. It has the characteristics of avoiding, knocking down and killing insects. It has a wide insecticidal spectrum, high activity, rapid drug effect, and is resistant to rain after spraying. It has good insecticidal activity against various pests such as Coleoptera, Lepidoptera, Hemiptera and mites, and can also treat insects and mites concurrently. Lambda-cyhalothrin can also control cotton, vegetable and fruit tree pests, etc., and can also be used to control a va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/08A01N47/40A01N25/28A01N25/04A01P7/02A01P7/04
CPCA01N25/04A01N25/28A01N47/40A01N53/00A01N2300/00
Inventor 刘润峰徐妍陶婧东琴高敬雨潘静
Owner 北京明德立达农业科技有限公司
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