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Quizalofop-p-ethyl microcapsule suspension agent prepared by using porous starch as carrier, and preparation method of quizalofop-p-ethyl microcapsule suspension agent

A technology of microcapsule suspending agent and porous starch, which is applied in the fields of botanical equipment and methods, biocides, biocides, etc., can solve the problems of complex manufacturing methods and technological processes, irregular morphology of microcapsules, easy agglomeration, etc. To achieve the effect of being beneficial to life and health, the preparation method is simple and reliable, and it is not easy to burn and explode.

Inactive Publication Date: 2018-06-29
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, there are not many varieties of pesticide microcapsule suspensions, and the main problems are: first, the manufacturing method and process are relatively complicated; second, the obtained microcapsules are irregular in shape and easy to agglomerate, etc.

Method used

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  • Quizalofop-p-ethyl microcapsule suspension agent prepared by using porous starch as carrier, and preparation method of quizalofop-p-ethyl microcapsule suspension agent
  • Quizalofop-p-ethyl microcapsule suspension agent prepared by using porous starch as carrier, and preparation method of quizalofop-p-ethyl microcapsule suspension agent
  • Quizalofop-p-ethyl microcapsule suspension agent prepared by using porous starch as carrier, and preparation method of quizalofop-p-ethyl microcapsule suspension agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Example 12. To prepare the quizalofop-p-p-ethyl microcapsule suspension of 1% with the porous starch as the carrier by the mass percentage composition described in Example 1, its concrete steps include as follows:

[0031] Step 1: Add 1 kg of quizalofop-p-ethyl to 5 kg of ethanol, then add 20 kg of corn porous starch and 1 kg of sorbitan polyoxyethylene polyoxypropylene ether, and stir for 1 hour to obtain a stable adsorption The homogeneous emulsion A;

[0032] Step 2: Mix 0.1 kg of urea with 0.25 kg of formaldehyde solution with a mass percentage of 37%, add dropwise a 5% sodium hydroxide aqueous solution and adjust the pH to 8, and then heat to 60°C , stirring and reacting for 1.5h to obtain urea-formaldehyde resin prepolymer B;

[0033] Step 3: The prepared urea-formaldehyde resin prepolymer B and the emulsion A are fully stirred and mixed at room temperature to form a mixed solution, and a 5% hydrochloric acid aqueous solution is added dropwise to adjust the pH o...

Embodiment 13

[0035] Example 13. To prepare the quizalofop-p-p-ethyl microcapsule suspension of 25% with porous starch as the carrier by the mass percentage composition described in Example 7, its specific steps include as follows:

[0036] Step 1: Add 25 kg of quizalofop-p-ethyl to 10 kg of acetone, then add 15 kg of indica rice porous starch and 5 kg of Nongru 33#, and stir thoroughly for 1 hour to obtain a uniform emulsion A with stable adsorption;

[0037] Step 2: Mix 0.1 kg of urea with 0.2 kg of formaldehyde solution with a mass percentage of 37%, add dropwise a 5% sodium hydroxide aqueous solution and adjust the pH to 8, and then heat to 60°C , stirring and reacting for 1.5h to obtain urea-formaldehyde resin prepolymer B;

[0038] Step 3: The prepared urea-formaldehyde resin prepolymer B and the emulsion A are fully stirred and mixed at room temperature to form a mixed solution, and a 5% hydrochloric acid aqueous solution is added dropwise to adjust the pH of the mixed solution to 5...

Embodiment 14

[0040] Example 14. To prepare the quizalofop-p-p-ethyl microcapsule suspension of 40% with porous starch as the carrier by the mass percentage composition described in Example 10, its specific steps include as follows:

[0041] Step 1: Add 40 kg of quizalofop-p-ethyl to 10 kg of ethanol, then add 20 kg of corn porous starch, 2 kg of Nongru 700#, and 2 kg of Nongru 1602#, and fully stir for 1 hour to obtain stable adsorption Uniform emulsion A;

[0042]Step 2: Mix 5 kg of urea with 12 kg of formaldehyde solution with a mass percentage of 37%, and add dropwise a 5% sodium hydroxide aqueous solution with mass percentage to adjust the pH to 8, and then heat to 60° C. , stirring and reacting for 1.5h to obtain urea-formaldehyde resin prepolymer B;

[0043] Step 3: The prepared urea-formaldehyde resin prepolymer B and the emulsion A are fully stirred and mixed at room temperature to form a mixed solution, and a 5% hydrochloric acid aqueous solution is added dropwise to adjust the ...

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Abstract

The invention relates to a quizalofop-p-ethyl microcapsule suspension agent prepared by using porous starch as a carrier, and a preparation method of the quizalofop-p-ethyl microcapsule suspension agent. The quizalofop-p-ethyl microcapsule suspension agent is characterized by being prepared from the following components by mass percent: 1-40% of quizalofop-p-ethyl, 1-20% of a solvent, 10-60% of the porous starch, 1-10% of an emulsifying agent, 0.1-10% of urea, 0.2-20% of a formaldehyde aqueous solution, 1-6% of a dispersing agent, 0-5% of an antifreezing agent, and the balance of water. The environment-friendly quizalofop-p-ethyl microcapsule suspension agent provided by the invention is a novel pesticide preparation, and has the advantages of being simple in performance, reducing the toxicity of the quizalofop-p-ethyl, reducing environmental pollution and irritation to people and livestock, being long in duration of efficacy, fewer in application times and lower in agricultural cost,and the like.

Description

technical field [0001] The invention belongs to the technical field of pesticide processing, in particular to a quizalofop-p-ethyl microcapsule suspension with porous starch as a carrier and a preparation method thereof. Background technique [0002] Quizalofop-P is a phenoxycarboxylate herbicide. Its mechanism of action is that after weed stems and leaves absorb the drug, the drug quickly passes through the woody and phloem parts of the weed up and down to the whole plant, and accumulates in the apical meristem , by inhibiting the carboxylation of acetyl CoA carboxylase and then inhibiting the synthesis of fatty acids in cells, destroying the growth of meristems, causing weeds to wither and die, suitable for soybeans, peas, broad-leaved vegetables, corn, potatoes, cotton, grapes , Tobacco and other broad-leaved crop fields to control grass weeds. At present, the dosage forms of quizalofop-p-ethyl in my country are mainly emulsifiable concentrate, microemulsion, suspoemulsi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/10A01N25/28A01N25/04A01N43/60A01P13/00
CPCA01N25/04A01N25/10A01N25/28A01N43/60
Inventor 孙伯旺蒋叶豪周钰明王明亮孙晨朱岭军王靖雯孙凯张雅雯程凯武
Owner SOUTHEAST UNIV
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