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Micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron and preparation method of same

A technology of high-efficiency cyhalothrin and microcapsule suspension, which is applied in the field of pesticides, can solve the problems of difficult to meet the preparation requirements of pesticides for the prevention and control of crop pests, poor pest effect, and difficult storage, etc., to achieve reduced dosage, good storage stability, The effect of reducing the number of medications

Inactive Publication Date: 2017-12-22
PILARQUIM SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The high-efficiency cyhalothrin microcapsule suspension obtained by the traditional preparation method is prone to agglomeration and solidification, which makes it difficult to store and has poor control effects on crop pests. It is difficult to meet the preparation requirements of pesticides for crop pest control

Method used

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  • Micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron and preparation method of same
  • Micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron and preparation method of same
  • Micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron and preparation method of same

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preparation example Construction

[0018] On the one hand, the present invention provides a kind of preparation method of the microcapsule suspension-suspension concentrate containing lambda-cyhalothrin and chlorfenuron, the preparation method comprises the following steps: S1, can be (1-5) by weight: 1 Mix amino resin prepolymer aqueous solution and efficient cyhalothrin emulsifiable concentrate to obtain the first material; S2, a buffer solution can be added to the first material obtained in step S1 and mixed to obtain a pH value of 5-7 The second material; S3, an acidic solution can be added to the second material obtained in step S2 and mixed to obtain a third material with a pH value of 3-4; S4, the temperature can be 40-70°C. The third material obtained in step S3 is stirred for 2-7 hours to obtain a fourth material; S5, the fourth material obtained in step S4 can be mixed in a weight ratio of 1: (0.1-1): (0.01-2) Mixing with verflubron suspending agent and emulsifying dispersing agent to obtain microcaps...

Embodiment 1

[0037] Mix melamine, formaldehyde and water, and react for 1.5 hours at a pH value of 8 and a temperature of 70°C to obtain a melamine-formaldehyde resin prepolymer aqueous solution, wherein the molar ratio of formaldehyde to melamine is 1:0.5, and water and formaldehyde The weight ratio is 2.8:1.

[0038] Evenly mix lambda-cyhalothrin, 200# solvent oil and sorbitan monostearate polyoxyethylene ether to obtain lambda-cyhalothrin emulsifiable concentrate, wherein, said lambda-cyhalothrin, 200 #The weight ratio of solvent oil and sorbitan monostearate polyoxyethylene ether is 1:2.5:0.05.

[0039] Mix the melamine-formaldehyde resin prepolymer aqueous solution and efficient cyhalothrin emulsifiable concentrate at a weight ratio of 4:1 at a stirring speed of 2000 rpm to obtain the first material; then at room temperature, adjust the pH value to 4.5. The acetic acid-sodium acetate buffer solution whose total concentration of the buffer pair is 2% by weight is uniformly added to th...

Embodiment 2

[0043] Mix melamine, formaldehyde and water and react for 1.5 hours at a pH value of 9 and a temperature of 75°C to obtain a melamine-formaldehyde resin prepolymer aqueous solution, wherein the molar ratio of formaldehyde to melamine is 1:1, water and formaldehyde The weight ratio is 3.5:1.

[0044] Mix lambda-cyhalothrin, 150# solvent oil and sodium lignosulfonate evenly to obtain lambda-cyhalothrin emulsifiable concentrate, wherein the lambda-cyhalothrin, 150# solvent oil and lignosulfonic acid The weight ratio of sodium is 1:0.5:0.1.

[0045] Mix melamine-formaldehyde resin prepolymer aqueous solution and efficient cyhalothrin emulsifiable concentrate at a weight ratio of 2:1 at a stirring speed of 1500 rpm to obtain the first material; then at room temperature, adjust the pH value to 3. The acetic acid-sodium acetate buffer solution whose total concentration of the buffer pair is 2% by weight is uniformly added to the above-mentioned first material within 1 hour, and mixe...

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Abstract

The invention discloses a micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron and a preparation method of same. The preparation method includes the following steps: S1) mixing an amino resin prepolymer water solution and lambda-cyhalothrin emulsifiable concentrate to obtain a first material; S2) adding a buffer solution to the first material with mixing to prepare a second material being 5-7 in pH value; S3) adding an acidic solution to the second material with mixing to prepare a third material being 3-4 in pH value; S4) stirring the third material at 40-70 DEG C for 2-7 h to obtain a fourth material; S5) mixing the fourth material, a teflubenzuron suspending agent and an emulsifying and dispersing agent to obtain the micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron. The micro-capsule suspension-suspending agent containing lambda-cyhalothrin and teflubenzuron has excellent storage stability and can prevent and treat pests on crops in a sustained-release long-lasting manner.

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 chlorfenuron and a preparation method thereof. Background technique [0002] Lambda-cyhalothrin is a broad-spectrum insecticide, which can inhibit the conduction of insect nerve axons, and has the functions of avoiding, knocking down and poisoning insects, and can also be used with most fungicides and insecticides. , herbicide mixed, have better control effect. The active ingredients of traditional pesticide formulations are prone to failure under the influence of external environment, such as sunshine, soil pH, etc., and the duration of effect is short, which reduces the control effect of pesticides. The existing preparations containing lambda-cyhalothrin on the market all contain a large amount of organic solvents, polluting the environment. Microcapsule suspensions use natural or synthetic polyme...

Claims

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Application Information

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IPC IPC(8): A01N53/08A01N47/34A01N25/28A01N25/04A01P7/04
CPCA01N53/00A01N25/04A01N25/28A01N47/34
Inventor 东琴潘静高敬雨刘润峰罗湘仁孙良宏丁文明陈坤张孝武陶代雨张磊
Owner PILARQUIM SHANGHAI
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