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Efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent and preparation method thereof

A technology of high-efficiency cyhalothrin and flupyrfuranone, 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 and good storage stability , the effect of reducing the number of medications

Inactive Publication Date: 2019-08-02
PILAR SHANGHAI CO LTD
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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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  • Efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent and preparation method thereof
  • Efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent and preparation method thereof
  • Efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent and preparation method thereof

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preparation example Construction

[0021] The preparation method of lambda-cyhalothrin·flupyrfurone microcapsule suspension-suspension agent of the present invention comprises the following steps: a, amino resin prepolymer aqueous solution and lambda-cyhalothrin emulsifiable concentrate are ( 0.5-5): 1 mixing to obtain the first material; b, mixing the first material obtained in step a with the buffer solution to obtain the second material, the pH value of the second material is 5-7; c . Mix the second material obtained in step b with an acidic solution to obtain a third material, the pH value of which is 2-5; d. Mix step c with the temperature of 40-60°C The 3rd material that obtains in process 2-4 hour, obtains the 4th material; E, the described 4th material that obtains in the step d and flurpirfurone suspending agent and dispersant are 1 by weight: (0.1 -10): (0.01-0.2) mixed to obtain a suspension-suspension of lambda-cyhalothrin·flupyrfurone microcapsules.

[0022] In the present invention, lambda-cyhalo...

Embodiment 1

[0039] Mix melamine, formaldehyde and water, and react for 3 hours at a pH value of 8 and a temperature of 80° C. to obtain a melamine-formaldehyde resin prepolymer aqueous solution, wherein the molar ratio of formaldehyde to melamine is 1:0.5, and the ratio of water and formaldehyde The weight ratio is 3:1.

[0040] 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 1:2.5:0.1.

[0041] Melamine-formaldehyde resin prepolymer aqueous solution and efficient cyhalothrin emulsifiable concentrate are mixed evenly at a weight ratio of 4:1 at a stirring speed of 500 rpm to obtain the first material; then at room temperature, the buffered pair The acetic acid-sodium acetate buffer solution with a total concentration of 2% by weight was added to the above-mentioned f...

Embodiment 2

[0045] Mix urea, formaldehyde and water and react for 0.5h at a pH of 10 and a temperature of 60°C to obtain an aqueous solution of melamine-formaldehyde resin prepolymer, wherein the molar ratio of formaldehyde to urea is 1:1, and water and formaldehyde The weight ratio is 2:1.

[0046] 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 1:5:0.2.

[0047] Mix melamine-formaldehyde resin prepolymer aqueous solution and efficient cyhalothrin emulsifiable concentrate at a weight ratio of 0.5:1 at a stirring speed of 200 rpm to obtain the first material; Acetic acid-sodium acetate buffer solution with a concentration of 5% by weight was uniformly added to the above-mentioned first material within 1 hour, and mixed uniformly at a stirring speed of 100 rpm to obtain a second material whose pH value was ad...

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Abstract

The invention relates to the field of farm chemicals and discloses an efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent and a preparation method thereof. The preparation method comprises the following steps: a, mixing an amino resin prepolymer solution with an efficient cyhalothrin emulsion to obtain a first material; b, mixing the first material with abuffer solution to obtain a second material; c, mixing the second material with an acid solution to obtain a third material of which the pH value is 2-5; d, under the condition that the temperature is 40-60 DEG C, treating the third material for 2-4 hours to obtain a fourth material; e, mixing the fourth material with a flupyradifurone suspending agent and a dispersant to obtain the efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent. The efficient cyhalothrin and flupyradifurone containing micro-capsule suspension-suspending agent prepared by usingthe method disclosed by the invention has relatively good storage stability, crop insects can be prevented and treated in a slow-release long-term effect manner, the application times and the dosage can be reduced, the cost can be reduced, and environment pollution can be alleviated.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a microcapsule suspension-suspension agent containing lambda-cyhalothrin and flupyfuranone 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. And single-agent lambda-cyhalothrin also has certain limitations....

Claims

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Application Information

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IPC IPC(8): A01N53/08A01N43/40A01N25/04A01N25/28A01P7/04
CPCA01N25/04A01N25/28A01N43/40A01N53/00
Inventor 刘润峰罗湘仁潘静高敬雨周同磊陶代雨张磊王洋陈坤陆建才殷强
Owner PILAR SHANGHAI CO LTD
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