Micro-capsule suspending-suspending agent containing pyraclostrobin and fluopyram and preparation method of micro-capsule suspending-suspending agent

A technology of fluopyram and pyraclostrobin, applied in the field of pesticides, can solve the problems of poor control effect, agglomeration, coagulation, difficult storage, etc., and achieves the effects of cost saving, slow-release and long-term prevention and control, and reduction of the number of medication

Inactive Publication Date: 2017-04-19
北京明德立达农业科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combined use of pyraclostrobin and fluopyram can improve the control effect, reduce the dosage, reduce the cost, and delay the occurrence of drug resistance, but the traditional pyraclostrobin-fluopyram compound suspension, It is prone to agglomeration and solidification, and is prone to failure under external conditions, resulting in difficult storage and poor control effect

Method used

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  • Micro-capsule suspending-suspending agent containing pyraclostrobin and fluopyram and preparation method of micro-capsule suspending-suspending agent
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  • Micro-capsule suspending-suspending agent containing pyraclostrobin and fluopyram and preparation method of micro-capsule suspending-suspending agent

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preparation example Construction

[0010] The first aspect of the present disclosure: provide a preparation method of microcapsule suspension-suspension containing pyraclostrobin and fluopyram, the preparation method may include the following steps: (1) mixing the first solution with the second solution Mix evenly to obtain the first material; wherein, the first solution contains an amino resin prepolymer aqueous solution, the second solution contains pyraclostrobin emulsifiable concentrate, and the weight ratio of the first solution to the second solution is (1-5): 1; (2) adding a buffer solution to the first material, adjusting the pH value of the mixed solution to 5-7 to obtain a second material; (3) adding acidic acid to the second material pH adjusting agent, adjusting the pH value of the mixed solution to 3-4 to obtain the third material; (4) performing solidification polycondensation treatment on the third material; adjusting the pH value of the solidified polycondensation product to 6.5-7.5 to obtain Th...

Embodiment 1

[0028] 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 weight ratio of formaldehyde, melamine and water is 1:2.1:2.8 .

[0029] Mix pyraclostrobin, 200# solvent oil and sorbitan monostearate polyoxyethylene ether to obtain pyraclostrobin emulsifiable concentrate, wherein, the pyraclostrobin, 200# solvent oil The weight ratio with sorbitan monostearate polyoxyethylene ether is 1:2.5:0.05.

[0030] Mix melamine-formaldehyde resin prepolymer aqueous solution and pyraclostrobin 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 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 the first material within 1 hour, and mixed evenly at a stirring speed of 1000 rpm...

Embodiment 2

[0034] Mix melamine, formaldehyde and water, and react for 1.5h at a pH value of 8 and a temperature of 70°C to obtain a melamine-formaldehyde resin prepolymer aqueous solution, wherein the weight ratio of formaldehyde, melamine and water is 1:4.2: 3.5.

[0035] Mix pyraclostrobin, 150# solvent oil and sodium lignosulfonate evenly to obtain pyraclostrobin emulsifiable concentrate, wherein, the weight of pyraclostrobin, 150# solvent oil and sodium lignosulfonate The ratio is 1:0.5:0.1.

[0036] Mix melamine-formaldehyde resin prepolymer aqueous solution and pyraclostrobin EC 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 first material within 1 hour, and mixed evenly at a stirring speed of 1100 rpm to obtain a pH value adjusted to 6. The second material; ...

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Abstract

The invention discloses a preparation method of a micro-capsule suspending-suspending agent containing pyraclostrobin and fluopyram. The preparation method includes the following steps that (1), a first solution is uniformly mixed with a second solution, and a first material is obtained; (2), a buffer solution is added into the first material, the pH value of the mixed solution is adjusted to be 5-7, and a second material is obtained; (3), an acidic pH regulator is added into the second material, the pH value of the mixed solution is adjusted to be 3-4, and a third solution is obtained; (4), the third material is subjected to solidification and condensation treatment, the pH value of a solidification and condensation product is adjusted to be 6.5-7.5, and a fourth material is obtained; (5), the fluopyram suspending agent is added into the fourth material, and a fifth material is obtained. The prepared micro-capsule suspending-suspending agent containing pyraclostrobin and fluopyram has better storage stability and can prevent and treat crop diseases in a slow-release manner in a long term, lower times for spraying of the suspending agent and reduce the dosage.

Description

technical field [0001] The disclosure relates to the technical field of pesticides, in particular to a microcapsule suspension-suspension agent containing pyraclostrobin and fluopyram and a preparation method thereof. Background technique [0002] Pyraclostrobin is a new type of fungicide, which has the functions of protection, treatment and leaf penetration. The combined use of pyraclostrobin and fluopyram can improve the control effect, reduce the dosage, reduce the cost, and delay the occurrence of drug resistance, but the traditional pyraclostrobin-fluopyram compound suspension, It has the disadvantages of being prone to agglomeration and solidification, and is prone to failure under external conditions, resulting in difficult storage and poor control effect. [0003] Therefore, there is an urgent need to develop a novel medicament of pyraclostrobin and fluopyram, which can be stored stably and has a prolonged duration. Contents of the invention [0004] The purpose ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N47/24A01N43/40A01P3/00
CPCA01N25/04A01N43/40A01N47/24A01N2300/00
Inventor 高敬雨徐妍东琴潘静刘润峰陈秋明
Owner 北京明德立达农业科技有限公司
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