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Microcapsule nematicide

A technology of nematocide and microcapsules, which is applied in the field of pesticides, can solve problems such as poor conditions, temperature control, difficult production process, and adhesion, and achieve the problems of unstable drug effect, improved control effect, and long residual effect period. Effect

Inactive Publication Date: 2016-06-15
PLANT PROTECTION RES INST OF GUANGDONG ACADEMY OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The combination of thiazophos and abamectin has a good control effect on nematodes, but the microcapsules are made by the original polymerization method. The conditions and temperature of this method are not well controlled, and it is easy to cause creaming, sticking, and violent aggregation, and the production process is difficult. Big

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0031] A preparation method of a microcapsule nematicide, comprising the steps of:

[0032] Dissolving thiazolphos, abamectin, encapsulating agent, defoaming agent and preservative in a solvent to make an oil phase;

[0033] The surfactant is dissolved in water to make the aqueous phase.

[0034] Pour the oil phase into the water phase, cut at 5000r / min for 5min, add ethylenediamine, stir at 1000r / min for 3h to form microcapsules, and obtain the microcapsule nematocide.

Embodiment 1

[0036] In this example, the microcapsule nematicide was prepared by the above-mentioned preparation method of the microcapsule nematicide.

[0037] Preparation of 21% Thiazophos-Avi Microcapsules:

Embodiment 100

[0038] Embodiment In 100g, each component quality is as follows (the following each embodiment is identical):

[0039] Thiazophos original drug 20g, polyisocyanate 2g, cyclohexanone 3g, abamectin original drug 1g, solvent oil (150#) 3g; dissolve avermectin with cyclohexanone and solvent oil, then add thiazole Phosphorus drug, polyisocyanate, mixed evenly to make oil phase;

[0040] 2g of alkylnaphthalene sulfonate condensation polymer, 1g of alkylphenol polyoxyethylene ether, 1g of alkylnaphthalenesulfonate condensation polymer and alkylphenol polyoxyethylene ether, 3g of ethylenediamine, and make up the balance to 100g with water; Dissolve the above additives (except ethylenediamine) in water to form a water phase.

[0041] The above-mentioned oil phase is poured into the above-mentioned water phase, and sheared at 5000r / min for 5min, and ethylenediamine is added to the mixed solution after the above-mentioned shearing, and stirred at 1000r / min for 3h to form microcapsules (...

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Abstract

The invention discloses a microcapsule nematicide, which is composed of the following components by mass: 20-30% of fosthiazate, 0.1-2% of avermectin, 1-5% of an encystation agent, 1-10% of a surfactant, 1-10% of a solvent, 1-2% of a thickening agent, 0.01-1% of a defoaming agent, 0.01-1% of a preservative, and the balance water. The microcapsule nematicide involved in the invention has the advantages of high efficiency, broad spectrum, and simple production process.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a microcapsule nematicide. Background technique [0002] Pesticide microcapsules use polymer materials as the capsule wall or membrane, and wrap the capsule core material through chemical, physical or physicochemical methods to form a microcapsule with a semi-permeable membrane. It is precisely because of the coating of the capsule wall material that the active ingredients are isolated from the surrounding environment, so the microcapsules have a series of characteristics: reducing the degradation of pesticides in the environment, prolonging the duration of action, and protecting organic phosphorus unstable in the environment. Pyrethrins, abamectin and other light-labile pesticides are of great significance; the slow release of active ingredients can improve the utilization rate of pesticides; prolonging the interval between spraying, reducing the number of spraying, and reducing enviro...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N25/04A01N57/32A01N43/90A01P5/00
CPCA01N25/28A01N25/04A01N43/90A01N57/32
Inventor 朱天圣孙宝利黄华王龙江章玉萍
Owner PLANT PROTECTION RES INST OF GUANGDONG ACADEMY OF AGRI SCI
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