High-efficiency cyhalothrin microcapsule suspension and preparation method thereof

A technology of high-efficiency cyhalothrin and microcapsule suspension, which is applied in the fields of botanical equipment and methods, insecticides, acaricides, etc., can solve the problems of wasting raw materials, difficult preparation, environmental protection, etc., to reduce toxicity, Environmental friendliness and the effect of reducing production costs

Inactive Publication Date: 2015-11-25
南通联农佳田作物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It not only wastes raw materials, but also brings environmental problems
Some microcapsule suspensions related to lambda-cyhalothrin have some deficiencies due to difficulty in preparation and storage stability

Method used

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  • High-efficiency cyhalothrin microcapsule suspension and preparation method thereof
  • High-efficiency cyhalothrin microcapsule suspension and preparation method thereof
  • High-efficiency cyhalothrin microcapsule suspension and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060]

[0061]

[0062] Dissolve 1 g of lambda-cyhalothrin Zhebai in 5 g of aromatic solvent naphtha (commercially available material), then add 2 g of toluene diisocyanate TDI (Cangzhou Dahua TDI Co., Ltd.), stabilizer BHA 0.2 g and stir Uniform (oil phase); add 2.0g of emulsifier nonylphenol polyoxyethylene ether NP-12 (Haian Petrochemical Co., Ltd.), 10g of 10% polyvinyl alcohol PVA aqueous solution into 49g of deionized water and stir well (water phase ); put the prepared oil phase into the water phase and turn on high-speed homogenization to form a stable O / W emulsion, and the measured average particle size is 2.53um; turn on the stirring (maintain 600 rpm), and then put the homogenized The emulsion was warmed up to 40°C, and at the same time, 0.1 g of hexamethylene diamine was slowly added to maintain a stable solidification temperature of the capsule wall material for 8 hours, and then 5.0 g of dispersant sodium lignosulfonate, 5.0 g of ethylene glycol, and 10 g o...

Embodiment 2

[0064]

[0065]

[0066] Disperse 5 g of lambda-cyhalothrin Zhebai in 15 g of soybean oil, add 5 g of stabilizer epoxy soybean oil and stir evenly (oil phase), dissolve by stirring, then add 3.0 g of polyphenyl polyphenylene Methyl polyisocyanate PAPI (Bayer, Germany) and 1.0 g of diphenylmethane diisocyanate MDI (Yantai Wanhua Polyurethane Co., Ltd.) were stirred evenly to form an oil phase; 2.0 g of emulsifier Tween-60 (Jiangsu Haian Petroleum Co., Ltd. Chemical Co., Ltd.), 10.0g of gum arabic (5%) aqueous solution was added to 31g of deionized water and stirred to form a water phase; put the prepared oil phase into the water phase and turn on high-speed homogenization to form a stable O / W emulsion. When the average particle size of the emulsion is about 10um; start stirring (maintain at 700 rpm), then raise the temperature of the homogenized emulsion to 35°C, and slowly add 1.0g of triethanolamine to maintain a stable solidification temperature of the capsule wall mate...

Embodiment 3

[0068]

[0069] Disperse 10g of lambda-cyhalothrin Zhebai in 20g of mineral oil, then add 0.3g of BHT and stir evenly (oil phase) and dissolve it by stirring, then add 5g of polyphenylpolymethylene polyisocyanate PAPI (Bayer, Germany) and 0.9g of toluene diisocyanate TDI (Cangzhou Dahua TDI Co., Ltd.) are stirred evenly to form an oil phase; 2.0g of emulsifier NP-10 (Nanjing Taihua Co., Ltd.), 5g of Add the glue (2%) aqueous solution into 37g of deionized water and stir well to form the water phase; put the prepared oil phase into the water phase and turn on high-speed homogenization to form a stable O / W emulsion. When the average particle size of the emulsion is around 18um Stop the emulsification; start stirring (maintain 800 rpm), then raise the temperature of the homogenized emulsion to 60°C, and slowly add 0.6g of diethylenetriamine at the same time to maintain a stable solidification temperature of the capsule wall material for 3.0 hours, then add 3.0g of carboxylate ...

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Abstract

The invention relates to a microcapsule suspension, the high-efficiency cyhalothrin microcapsule suspension comprises the following components: 1-20% of high-efficiency cyhalothrin, 1-10% of a solvent, 1-8% of a capsule wall material, 0.1-3% of a protecting adhesive, 2-5% of an emulsifier, 3-5% of a dispersant, 0.01-14% of an adjuvant and 1-99% of water. The preparation method is characterized in that a high-efficiency cyhalothrin active substrate is taken as the capsule core, a polyurea resin is taken as the capsule wall material, an interfacial polymerization technology is used for preparing the high-efficiency cyhalothrin microcapsule suspension, and finally the cyhalothrin microcapsule suspension is prepared. The effective components in the cyhalothrin microcapsule suspension are concentrated in the capsule core, and other medium can be water, such that environmental pollution is reduced, and production cost is effectively reduced. The high-efficiency cyhalothrin microcapsule suspension has release controlling capability, pesticide lasting period can be prolonged by 3-10 times, acute toxicity of original medicine can be reduced, toxicity of the cyhalothrin microcapsule suspension on non-target organisms is also reduced, and the high-efficiency cyhalothrin microcapsule suspension is safe to use and transport.

Description

technical field [0001] The invention relates to the field of pesticide dosage form processing, in particular to a microcapsule suspending agent with efficient cyhalothrin as a capsule core and a preparation method thereof. Background technique [0002] Lambda-cyhalothrin (Lambda-cyhalothrin): Its medicinal characteristics inhibit the conduction of insect nerve axons, and have the effects of avoiding, knocking down and poisoning insects. It has a wide insecticidal spectrum and high activity. It has a rapid effect and is resistant to rain erosion after spraying, but it is easy to develop resistance to it after long-term use. It has certain control effects on pests and mites with piercing-sucking mouthparts. The mechanism of action is the same as fenvalerate and cyfluthrin. [0003] Beta-cyhalothrin is a high-efficiency, broad-spectrum, fast-acting pyrethroid insecticide and acaricide, mainly with contact and stomach toxicity, without systemic effect. It has a good effect on v...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N53/08A01N25/28A01N25/04A01P7/04A01P7/02
Inventor 曹雄飞仲苏林曹新梅吴建兰胥亚云
Owner 南通联农佳田作物科技有限公司
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