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Flubendiamide and natural pyrethrum compounded insect-killing microemulsion and preparation method thereof

A technology of natural pyrethrins and flubendiamide, applied in the direction of insecticides, botanical equipment and methods, biocides, etc., can solve the problem of single dosage form, achieve low cost, simple preparation process, and delay pest resistance Effect

Inactive Publication Date: 2013-06-12
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The current flubendiamide and natural pyrethrin products used in the domestic and foreign pesticide markets have shortcomings. The dosage form is relatively simple; at present, the compound microemulsion of flubendiamide and natural pyrethrins has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Weigh 40.0kg of flubendiamide and 0.2kg of pyrethrins, and then add 5.0kg of nonylphenol polyoxyethylene ether, 3.0kg of organic silicon 810c, 5.0kg of butyl glycidyl ether and 3.5kg of isoamyl alcohol to the After stirring and mixing uniformly in a high-speed shearing machine, finally add 43.3 kg of deionized water, stir and mix uniformly, let stand for 10 hours, heat to 55° C., and after fully stirring, a microemulsion can be prepared. The preparation was diluted with water to carry out the field drug efficacy test. The control effect of its 4800 times solution on Spodoptera litura on the 4th day after application was 91.2%, and the control effect on cotton bollworm on the 5th day was 91.8%.

Embodiment 2

[0025] Example 2: Weigh 34.0kg of flubendiamide and 0.6kg of pyrethrins, and then mix it with 4.5kg of nonylphenol polyoxyethylene ether, 1.5kg of calcium dodecylsulfonate, 2.0kg of organic silicon 810c, and butyl glycidol After stirring 5.0kg of ether and 5.5kg of isoamyl alcohol in a high-speed shearing machine, add 46.9kg of deionized water, stir and mix evenly, let stand for 5 hours, heat to 52°C, and stir thoroughly to prepare into microemulsions. The preparation was diluted with water to conduct a field efficacy test, and the control effect of its 4800-fold solution on Spodoptera litura was 86.7% on the 4th day after application, and 89.3% on the 5th day after the application of cotton bollworm.

Embodiment 3

[0026] Example 3: Weigh 0.1kg of flubendiamide and 8.0kg of pyrethrins, and then mix it with 12.5kg of nonylphenol polyoxyethylene ether, 4.0kg of dioctyl sulfosuccinate sodium salt, 8.0kg of azone, butyl 6.0kg of glycidyl ether and 13.0kg of isoamyl alcohol were mixed evenly in a high-speed shearing machine, and finally 48.4kg of deionized water was added, stirred and mixed evenly, left to stand for 6 hours, heated to 52°C, and fully stirred, that is Can be made into microemulsions. The preparation was diluted with water to carry out the field drug efficacy test, and its 2500-fold solution had a control effect of 89.2% on the 4th day after the application of Spodoptera litura, and 89.9% of the control effect on the cotton bollworm on the 5th day.

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Abstract

The invention discloses a flubendiamide and natural pyrethrum compounded insect-killing microemulsion and a preparation method thereof. The microemulsion comprises the following components in percentage by weight: 0.1-40 percent of flubendiamide, 0.2-8 percent of natural pyrethrum, 3-19 percent of emulsifying agent, 4-13 percent of penetrating agent, 1-11 percent of stabilizing agent, 2-16 percent of cosolvent and 20-69 percent of deionized water. The preparation method comprises the following steps of: firstly, adding the flubendiamide, the natural pyrethrum, the emulsifying agent, the penetrating agent, the stabilizing agent and the cosolvent in a high-speed shearing machine; after stirring and mixing uniformly, adding the deionized water, stirring and mixing uniformly; and then standing for 5-12h, heating to 46-57 DEG C and fully stirring to prepare the microemulsion. The microemulsion has remarkable control effect on prodenia litura and cotton bollworm, overcomes the defect that the emulsifiable concentrate preparations use toxic solvents of dimethylbenzene, and the like by using water as matrix, and is safe for environment, human and animals and other beneficial living beingswithout easily producing chemical injury.

Description

technical field [0001] The invention relates to insecticide compounding technology, in particular to an insecticidal microemulsion compounded with flubendiamide and natural pyrethrins and a preparation method thereof. Background technique [0002] In recent years, in countries such as the United States, restrictions on the use of organic solvents in pesticide formulations have become increasingly stringent, and xylene has a tendency to be banned in some countries. Therefore, it has become the general trend of pesticide development to develop new liquid preparations with strong safety, green environmental protection and low price to reduce or eliminate these harmful organic solvents. Among them, water-based is one of the leading directions for the development of pesticide formulations, and new pesticide formulations will add new features to pesticides, which can give full play to the functional characteristics of the original drug itself, overcome and make up for the shortcom...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N65/12A01N41/10A01N25/04A01P7/04
CPCY02A50/30
Inventor 何道航宋少云刘仙平李新伟
Owner SOUTH CHINA UNIV OF TECH
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