S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent and preparation method thereof

A technology of metolachlor sperm and sulfentrazone is applied in the field of pesticides, and can solve the problems of short duration of effect of metolachlor sperm and sulfentrazone, reduced pesticide control effect, short duration of effect and the like

Inactive Publication Date: 2019-04-05
PILARQUIM SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The duration of effect of refined metolachlor and sulfentrazone is relatively short, and a large amount of organic solvents in traditional medicament types are easy to pollute the environmen

Method used

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  • S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent and preparation method thereof
  • S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent and preparation method thereof
  • S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent and preparation method thereof

Examples

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preparation example Construction

[0031] The first aspect of the present disclosure provides a method for preparing a microcapsule suspension-suspension containing sperm metolachlor and sulfentrazone, the method comprising the following steps:

[0032] (1) Mix the first solution and the second solution evenly to obtain the first material; the weight ratio of the first solution to the second solution is (1-4): 1; the first solution contains amino- Formaldehyde resin prepolymer aqueous solution; The second solution contains refined metolachlor emulsifiable concentrate;

[0033] (2) adding a buffer solution to the first material and mixing evenly, so that the pH value of the mixed material is 4.5-7 to obtain a second material;

[0034] (3) adding an acidic pH regulator to the second material and mixing evenly, so that the pH value of the mixed solution is 3-4 to obtain a third material;

[0035] (4) subjecting the third material to solidification polycondensation to obtain a solidified polycondensation product, ...

Embodiment 1

[0055] Mix melamine and 37% by weight formaldehyde solution evenly, react for 2 hours at pH 8 and temperature 70° C.; add water to dilute to obtain melamine-formaldehyde resin prepolymer aqueous solution. Among them, the molar ratio of formaldehyde to melamine is 1:0.6, and the volume ratio of formaldehyde aqueous solution to water is 1:1.5.

[0056] Mix the purified metolachlor, 150# solvent oil and sorbitan monostearate polyoxyethylene ether evenly to obtain refined metolachlor emulsifiable concentrate. Wherein, the weight ratio of refined metolachlor to 150# solvent oil and sorbitan monostearate polyoxyethylene ether is 1:2.5:0.05.

[0057] The obtained melamine-formaldehyde resin prepolymer aqueous solution and refined metolachlor emulsifiable concentrate are mixed uniformly to obtain the first material, wherein the weight ratio of melamine-formaldehyde resin prepolymer aqueous solution and refined metolachlor emulsifiable concentrate is 4:1 , mixed evenly with a stirring...

Embodiment 2

[0061] Mix melamine and 37% by weight formaldehyde solution evenly, react for 4 hours at pH 10 and temperature 60° C.; add water to dilute to obtain urea-formaldehyde resin prepolymer aqueous solution. Wherein, the molar ratio of formaldehyde to urea is 1:0.1, and the volume ratio of water and formaldehyde aqueous solution is 1:1.

[0062]Mix the refined metolachlor, ethanol and sodium lignosulfonate evenly to obtain the refined metolachlor emulsifiable concentrate. Wherein, the weight ratio of refined metolachlor to ethanol and sodium lignosulfonate is 1:0.1:0.01.

[0063] The obtained urea-formaldehyde resin prepolymer aqueous solution and pure metolachlor emulsifiable concentrate are mixed uniformly to obtain the first material, wherein the weight ratio of urea-formaldehyde resin prepolymer aqueous solution and pure metolachlor emulsifiable concentrate is 1:1 , mixed evenly with a stirring speed of 1300 rev / min, and the stirring time was 20 minutes; under the condition of ...

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Abstract

The invention relates to a preparation method of an S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent. The preparation method of the S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent comprises uniformly mixing a first solution and a second solution to obtain a first material, uniformly mixing buffer solution into the first material, controlling the mixed material to be 4.5-7 to obtain a second material; uniformly mixing the acid pH regulator into the second material to control the mixed material to be 3-4 to obtain a third material; performing cured polycondensation on the third material to obtain a cured and polycondensed product, adjusting the pH of the cured and polycondensed product to be 6-7.5 to obtain a fourth material; uniformly mixing the fourth material with a first dispersing agent to obtain a fifth material; uniformly mixing the fifth material, sulfentrazone suspension and a second dispersing agent to obtain the S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent. The S-metolachlor and sulfentrazone-containing microcapsule suspension-suspending agent is high in stability,easy to store, long in effects, small in pollution and capable of improving the control effects of pesticides.

Description

technical field [0001] The present disclosure relates to the field of pesticides, in particular to a microcapsule suspension-suspension agent containing sperm metolachlor and sulfentrazone and a preparation method thereof. Background technique [0002] Pure metolachlor is a refined active S-body obtained by using advanced technology to remove the inactive R-body on the basis of metolachlor. It is a chloroacetamide selective herbicide, which is suitable for crops With a broad spectrum, it is the main herbicide in corn and soybean fields, which are important food crops in the world. Metolachlor-sperm and metolachlor are both cell division inhibitors, which mainly inhibit the growth of cells by inhibiting the synthesis of long-chain fatty acids. In addition to the advantages of metolachlor, refined metolachlor has only one-tenth of the toxicity of metolachlor, which is better than metolachlor in terms of safety and control effect. [0003] Sulfentrazone is a triazolinone herb...

Claims

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Application Information

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IPC IPC(8): A01N43/653A01N37/22A01N25/04A01N25/28A01P13/00
CPCA01N25/04A01N25/28A01N37/22A01N43/653
Inventor 高敬雨罗湘仁刘润峰潘静李蕾李霞马燕侠
Owner PILARQUIM SHANGHAI
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