Compound insecticidal aqueous emulsion containing abamectin and chlorpyrifos, and preparation method thereof

A technology of abamectin and water-emulsion, applied in the field of pesticides, can solve the problems of non-negligible chronic toxicity, many organic chemical materials, difficult removal and separation, etc., achieve good emulsifiable oil stability, improve insecticidal efficacy, and reduce production cost effect

Active Publication Date: 2009-10-21
威尔(福建)生物有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The microemulsion is a transparent or translucent solution formed after the liquid or the liquid pesticide prepared with a solvent is dispersed in an aqueous solution containing a large amount of surfactant. Therefore, the organic chemical materials (emulsifier and enhancer) required for the microemulsion solvent) is more, the production cost is high
Microemulsions generally need to add about 10% solubilizers (mainly hydrophilic straight-chain or branched-chain alcohols and ketones). The acute toxici

Method used

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  • Compound insecticidal aqueous emulsion containing abamectin and chlorpyrifos, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1: 15% Avi. Chlorpyrifos emulsion in water

[0026] Composition in weight percent: 0.2% abamectin, 14.8% chlorpyrifos, 10% xylene, 6% emulsifier WELL-102 (produced by Fujian Well Biochemical Technology Co., Ltd., which consists of calcium dodecylbenzenesulfonate and three The mixture of phenylethylphenol polyoxypropylene polyoxyethylene block polymer, the weight ratio is 33:67), 5% urea, 0.5% aluminum magnesium silicate, 0.05% silicone defoamer, 0.5% TBHQ, the balance for water.

[0027] According to the formula given above, first dissolve avermectin and chlorpyrifos original drug with xylene solvent, then add WELL-102 emulsifier, urea antifreeze agent, magnesium aluminum silicate thickener, and stabilizer TBHQ to form the oil phase , then slowly add water while stirring, the system gradually thickens, when it reaches the thickest point (that is, the phase inversion point), slow down the stirring speed, and finally make up the remaining water, add silicone d...

Embodiment 2

[0035] Embodiment 2: 35% Avi. Chlorpyrifos emulsion in water

[0036] Composition by weight percentage: 0.5% abamectin, 34.5% chlorpyrifos, 5% methanol, 15% xylene, 7% WELL-102, 3% ethylene glycol, 0.5% xanthan gum, 0.05% silicone defoamer, 0.5% BHA, balance water.

[0037] According to the formula given above, first dissolve abamectin and chlorpyrifos in xylene solvent, then add WELL-102 emulsifier, ethylene glycol antifreeze, xanthan gum thickener, and stabilizer BHA to form oil Then slowly add water while stirring, and the system will gradually thicken. When it reaches the thickest point (that is, the phase inversion point), slow down the stirring speed, and finally make up the remaining water, add silicone defoamer, high The shearing machine shears for about 1 hour (rotational speed 2950rmp), promptly obtains the water emulsion.

[0038] Its physical and chemical performance index values ​​are as follows:

[0039] Abamectin B 1 Quality score, % 0.5

[0040] Chlorpyrif...

Embodiment 3

[0045] Embodiment 3: 31% Avi. Chlorpyrifos emulsion in water

[0046] Composition in weight percent: 1.0% abamectin, 30% chlorpyrifos, 5% cyclohexanone, 15% xylene, 7% emulsifier (calcium dodecylbenzenesulfonate: triphenylethylphenol polyoxypropylene polyoxygenate The weight ratio of ethylene block polymer 1601 is 38:62), 5% propylene glycol, 0.3% xanthan gum, 0.05% silicone defoamer, 0.5% BHA, and the balance is water.

[0047] According to the formula given above, first dissolve abamectin and chlorpyrifos original drug with cyclohexanone and xylene solvent, then add emulsifier, propylene glycol antifreeze agent, xanthan gum thickener, and stabilizer BHA to form the oil phase , then slowly add water while stirring, the system gradually thickens, when it reaches the thickest point (that is, the phase inversion point), slow down the stirring speed, and finally make up the remaining water, add silicone defoamer, high shear The machine sheared for about 0.5 hour (rotating speed ...

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Abstract

The invention discloses a compound insecticidal aqueous emulsion containing abamectin and chlorpyrifos. The aqueous emulsion contains the following components by weight percentage: 0.1 to 5 percent ofabamectin, 10 to 50 percent of chlorpyrifos, 10 to 40 percent of solvent, 5 to 15 percent of emulsifier, 3 to 5 percent of anti-freeze agent, 0.05 to 1 percent of thickener, 0.05 to 0.2 percent of defoamer, 0.1 to 5 percent of stabilizer, and the balance of water. The invention has the advantages of solving the decomposition problem of the abamectin and greatly improving insecticidal efficacy, along with safe use, good environmental protection property and low cost.

Description

technical field [0001] The invention belongs to the field of pesticides, in particular to an insecticide, in particular to a compound insecticidal aqueous emulsion containing abamectin and chlorpyrifos and a preparation method thereof. Background technique [0002] Abamectin is a kind of bio-pesticide, which mainly interferes with the neurophysiological activities of insects, stimulates the release of γ-aminobutyric acid, and inhibits the conduction of insect nerve impulses. It can be used for the control of various pests. Its main feature is easy It is biodegradable and has a long duration of action, but its quick-acting property is poor, and it has the disadvantages of high cost and expensive price. Chlorpyrifos is a commonly used low-toxic organophosphate insecticide. It mainly controls pests through three modes of action: contact killing, stomach poisoning and fumigation. The insecticidal spectrum can be compared with methamidophos, but the toxicity is much lower than th...

Claims

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Application Information

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IPC IPC(8): A01N57/16A01N43/90A01N25/04A01N25/22A01P7/00
Inventor 倪素美林桂蓉陈映陈关喜吴清洲
Owner 威尔(福建)生物有限公司
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