Microcapsule pesticide compounding sucrose ester with abamectin and preparation method of microcapsule pesticide

A technology of abamectin and sucrose ester, which is applied in the field of pesticides, can solve the problems that there are no reports of sucrose ester and avermectin compound microcapsule insecticides, etc., and achieve low production cost, simple preparation process, long-lasting long-lasting effect

Inactive Publication Date: 2012-07-18
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, there is no report on the compound microcapsule insecticide of sucrose ester and abamectin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Configuration mass concentration is 8% sodium lignosulfonate aqueous solution, in reactor, add 435g sodium lignosulfonate aqueous solution, octanoic acid sucrose ester 350g, after mixing uniformly, obtain continuous phase, 5g abamectin is dissolved in 10g The organic phase was obtained in toluene, and the organic phase was added to the continuous phase, heated to 45°C, 100g of toluene diisocyanate and 100g of ethylene glycol were added at a constant temperature, stirred at 2000r / min for 45min, and interfacial polymerization was carried out at 600r / min Continue to stir for 25 minutes at a rotating speed to obtain the compound microcapsule insecticide of sucrose ester and abamectin. The spraying and biological activity statistics were carried out according to the pesticide field efficacy test guidelines, and the control effects of the 2800-fold solution on tobacco aphids were 88.5% and 84.1% respectively on the 7th day and 14th day after the drug application.

Embodiment 2

[0029] Configuration mass concentration is 2% sodium dodecylbenzenesulfonate aqueous solution, in reactor, add 880g sodium dodecylbenzenesulfonate aqueous solution, add sucrose heptanoate 10g, after mixing, obtain continuous phase, will Dissolve 30g of abamectin in 60g of toluene to obtain an organic phase, add the organic phase to the continuous phase, heat to 46°C, add 10g of hexamethylene diisocyanate and 10g of pentylene glycol at a constant temperature, and stir at 1600r / min 50min, carry out interfacial polymerization reaction, continue stirring at 500r / min rotating speed for 30min, can obtain sucrose ester and abamectin composite microcapsule insecticide. According to the pesticide application and biological activity statistics, the 1000-fold solution of the preparation has a control effect of 85.1% and 80.2% on the 8th day and 16th day after the application of the drug to Bemisia tabaci.

Embodiment 3

[0031] Configure a nonylphenol polyoxyethylene ether aqueous solution with a mass concentration of 2%. In the reactor, add 500g of nonylphenol polyoxyethylene ether aqueous solution, add 150g of sucrose octanoate and 150g of sucrose heptanoate, and mix well to obtain a continuous Phase, dissolve 10g of abamectin in 20g of toluene to obtain an organic phase, add the organic phase to the continuous phase, heat to 48°C, add 70g of xylene diisocyanate and 100g of hexanediol at a constant temperature, at a speed of 1800r / min Stir for 55 minutes to carry out interfacial polymerization, and continue to stir for 26 minutes at a speed of 800 r / min to obtain the compound microcapsule insecticide of sucrose ester and abamectin. Pesticide application and biological activity statistics were carried out according to the pesticide field efficacy test guidelines. The control effects of the 3000-fold solution on soybean aphids after application were 89.6% and 86.7% respectively on the 6th day a...

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Abstract

The invention discloses a microcapsule pesticide compounding sucrose ester with abamectin and a preparation method of the microcapsule pesticide. The microcapsule pesticide comprises the following components by weight percentage accounting for the total weight of raw materials: sucrose ester accounting for 1 to 35 percent, abamectin accounting for 0.5 to 3 percent, dispersing agents accounting for 1 to 8 percent, solvent accounting for 1 to 6 percent, wall material accounting for 2 to 20 percent, and water accounting for 40 to 88 percent. The preparation method comprises the steps as follows: sucrose ester is added in aqueous solution of the dispersing agents according to prescription; a continuous phase is obtained after sucrose ester and aqueous solution of the dispersing agents are mixed uniformly; abamectin is completely dissolved in toluene to obtain an organic phase; the organic phase is added in the continuous phase, and mixed liquor is heated to reach the temperature ranging from 45 to 50 DEG C; wall material is added under constant temperature; and in addition, stirring operation is carried out for 25 to 30 minutes at the rotational speed ranging from 500 to 1000 r/min after an interfacial polymerization reaction is performed so as to obtain the microcapsule pesticide compounding sucrose ester with abamectin. The microcapsule pesticide achieves an excellent control effect on bemisia tabaci and aphides, and pests are difficult to be drug-resistant; and in addition, the preparation technology is simpler, the manufacturing cost is lower, and the microcapsule pesticide is suitable for being popularized and applied in large area.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and relates to a pesticide compound insecticide, in particular to a sucrose ester and abamectin compound microcapsule insecticide and a preparation method thereof. Background technique [0002] my country is a large agricultural country, especially a major producer of crops such as wheat, cotton and tobacco leaves, and the economic losses caused by pests and diseases are huge every year. For a long time, traditional formulations such as emulsifiable concentrates, powders and wettable powders have been the main forms of pesticide production in my country. The emulsifiable concentrate preparations pollute the environment because they contain a large amount of organic solvents, and the powder preparations are prone to dust pollution during production and processing. [0003] Pesticide microcapsules use polymer materials as capsule walls or capsules to wrap pesticide active substances by chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/90A01N43/16A01N25/28A01P7/04
Inventor 夏育陆何道航刘仙平
Owner SOUTH CHINA UNIV OF TECH
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