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Abamectin nano-emulsion and preparation method thereof

A technology of abamectin and nanoemulsion, which is applied in the field of preparation of insecticide nanoemulsion, and can solve the problems of no particle size measurement results and insecticidal activity, incomplete high-shear emulsification method, and low-energy emulsification method. , to achieve good market promotion prospects, high biological activity of larvae, and the effect of human and animal safety

Inactive Publication Date: 2020-06-30
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Invention patents (CN104738031A) and (CN10922187A) describe the preparation method of abamectin water emulsion with complicated steps, neither completely high-shear emulsification method nor low-energy emulsification method
The abamectin nanoemulsion described in the invention patents (CN103478144A) and (CN106489989A) did not use the low-energy emulsification method, and the co-emulsifier used in the formula needs to be higher than room temperature (30-40°C), and there is no particle size measurement result and insecticidal activity, cannot reflect the beneficial effect of the invention

Method used

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  • Abamectin nano-emulsion and preparation method thereof
  • Abamectin nano-emulsion and preparation method thereof
  • Abamectin nano-emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) 0.4g Abamectin former drug is completely dissolved in No. 2.0g S-200 solvent oil to form a transparent solution;

[0025] (2) Add 1.0 g of emulsifier castor oil polyoxyethylene ether EL-40 to the transparent solution in step 1), and fully stir to form a uniform oil phase;

[0026] (3) Add 16.6g of water dropwise to the oil phase prepared in step 2) under the condition of magnetic stirring; the magnetic stirring speed is 500-800r / min;

[0027] (4) After the water has been added dropwise, accelerate to a speed of 1500r / min, keep the speed and continue magnetic stirring for 15min to obtain 20g of abamectin nanoemulsion.

Embodiment 2

[0029] (1) 1.5g Abamectin former drug is completely dissolved in No. 9.0g S-200 solvent oil to form a transparent solution;

[0030] (2) Add 3 g of emulsifier styrylphenyl polyoxyethylene ether (R2) to the transparent solution in step 1), and stir fully to form a uniform oil phase;

[0031] (3) Add 16.5g of water dropwise to the oil phase prepared in step 2) under the condition of magnetic stirring; the magnetic stirring speed is 500-800r / min;

[0032] (4) After the water has been added dropwise, continue magnetic stirring at a speed of 1200r / min for 16min to obtain 30g of abamectin nanoemulsion.

Embodiment 3

[0034] (1) 0.2g Abamectin former drug is completely dissolved in No. 2.0g S-150 solvent oil to form a transparent solution;

[0035] (2) Add 2.0 g of emulsifier alkyl glycoside (R3) to the transparent solution in step 1), and stir well to form a uniform oil phase;

[0036] (3) 35.8g of water is added dropwise to the oil phase prepared in step 2) under the condition of magnetic stirring; the magnetic stirring speed is 500-800r / min;

[0037] (4) After the water has been added dropwise, continue magnetic stirring at a speed of 900r / min for 17min to obtain 40g of the avermectin nanoemulsion.

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Abstract

The invention discloses an abamectin nano-emulsion and a preparation method thereof in the technical field of insecticides. The formula of the abamectin nano-emulsion comprises the following components in percentage by weight: 0.5-5% of abamectin, 5-30% of a solvent, 5-10% of an emulsifier and the balance being water. The preparation method is a low-energy emulsification method. The abamectin nano-emulsion prepared by the method has the characteristics of high storage stability, low emulsifier dosage, simple processing, obvious prevention and treatment effect and the like, and meanwhile, the abamectin nano-emulsion prepared by the method uses a green and environment-friendly organic solvent, is safe to human and livestock, and has good environmental compatibility.

Description

technical field [0001] The invention relates to the preparation technology of insecticide nanoemulsion, in particular to an abamectin nanoemulsion and a preparation method thereof. Background technique [0002] Avermectin (Avermectin) is a sixteen-membered macrolide compound with insecticidal, acaricidal and nematicidal activities jointly developed by Satoshi Omura of Kitasato University in Japan and Merck of the United States. It is extracted from Streptomyces fermented Isolated metabolites. In recent years, abamectin has been widely used in the prevention and control of pests such as Diptera, Homoptera, and Lepidoptera in agriculture and forestry, as well as pest mites, and it has been found to have a high control effect on vegetable root-knot nematodes. Compared with other pesticides, the mechanism of action of abamectin is to block the transmission of pest motor nerve signals and stimulate the release of γ-aminobutyric acid, while GABA can inhibit the nerve conduction o...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N43/90A01P7/04A01P7/02A01P5/00
CPCA01N25/04A01N43/90
Inventor 冯建国陈旺刘芳孔海龙杨文超沈亚明陈志洋马英剑
Owner YANGZHOU UNIV
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