Microcapsule suspension-suspending agent containing pyraclostrobin and fluxapyroxad as well as preparation method of microcapsule suspension-suspending agent

A technology of pyraclostrobin and fluoxamid, applied in the field of pesticides, can solve the problems of disease mixing, easy generation of drug resistance, environmental pollution, etc., and achieve the effect of good lasting effect

Inactive Publication Date: 2018-03-30
北京明德立达农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In agricultural production practice, there are often problems of mixed occurrence of different types of diseases. Fungicide varieties containing a single active component often have defects in disease control to varying degrees, and are prone to drug resistance, which consumes a lot of manpower, material resources and financial resources. , will also cause environmental pollution

Method used

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  • Microcapsule suspension-suspending agent containing pyraclostrobin and fluxapyroxad as well as preparation method of microcapsule suspension-suspending agent
  • Microcapsule suspension-suspending agent containing pyraclostrobin and fluxapyroxad as well as preparation method of microcapsule suspension-suspending agent
  • Microcapsule suspension-suspending agent containing pyraclostrobin and fluxapyroxad as well as preparation method of microcapsule suspension-suspending agent

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Experimental program
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preparation example Construction

[0027] In the second aspect, the present invention provides a method for preparing a microcapsule suspension-suspension containing pyraclostrobin and flufenapyr, the preparation method may include the following steps: S1, pyraclostrobin can be dissolved in In the organic solvent, oil-soluble capsule wall material and emulsifier can be added to mix to obtain the oil phase material; the dispersant wetting agent and defoamer can be dissolved in water to obtain the water phase material; S2, the oil phase material can be mixed with The water-phase materials are mixed and sheared at 10000-13000 rpm for 1-15 minutes to obtain an O / W emulsion; S3, water-soluble capsule wall materials can be added to the O / W emulsion and can be Heat preservation reaction at 40°C-80°C for 0.5-4 hours to obtain pyraclostrobin microcapsule suspension; The pH adjuster, the antifreeze agent and water are mixed to obtain a microcapsule suspension-suspension formulation containing pyraclostrobin and flufenapy...

Embodiment 1

[0036] Example 1: Preparation of 20% pyraclostrobin·flufenapyr microcapsule suspension-suspension concentrate (pyraclostrobin 10%, flufenapyr 10%)

[0037] (1) Preparation of 20% pyraclostrobin microcapsule suspension

[0038] Dissolve 20.6 grams of pyraclostrobin (content 98%) in 30 grams of solvent naphtha No. 150, add 2 grams of aliphatic polyisocyanate and 3 grams of sorbitan polyoxyethylene ether, and stir evenly to obtain an oil phase; Dissolve 3 grams of sodium lignosulfonate and 0.2 grams of silicone defoamer in 40.7 grams of water to obtain a water phase; then add the oil phase to the water phase and shear for 1 minute at 10,000 rpm to form an O / W emulsion; 0.5 g of ethylenediamine was added dropwise to the emulsion, and the temperature was raised to 50° C. for 2 hours of heat preservation reaction to obtain 100 g of 20% pyraclostrobin microcapsule suspension.

[0039] (2) Preparation of 25% flufenapyramide suspension concentrate

[0040] 25.5 grams of flufenapyroxa...

Embodiment 2

[0043] Example 2: Preparation of 20% pyraclostrobin · flufenapyr microcapsule suspension-suspension concentrate (pyraclostrobin 10%, flufenapyr 10%)

[0044] (1) Preparation of 20% pyraclostrobin microcapsule suspension

[0045] Dissolve 20.6 grams of pyraclostrobin (content 98%) in 35 grams of solvent naphtha No. 150, add 2.5 grams of aliphatic polyisocyanate and 3 grams of sorbitan polyoxyethylene ether, and stir evenly to obtain an oil phase; Dissolve 3 grams of sodium lignosulfonate and 0.2 grams of silicone antifoaming agent in 35.2 grams of water to obtain a water phase; then add the oil phase to the water phase, and shear for 5 minutes at 12000 rpm to form an O / W emulsion; 0.5 g of ethylenediamine was added dropwise to the emulsion, and the temperature was raised to 50° C. for 2.5 hours of heat preservation reaction to obtain 100 g of 20% pyraclostrobin microcapsule suspension.

[0046] (2) Preparation of 25% flufenapyramide suspension concentrate

[0047] With embodi...

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Abstract

The invention discloses a microcapsule suspension-suspending agent containing pyraclostrobin and fluxapyroxad as well as a preparation method of the microcapsule suspension-suspending agent. The microcapsule suspension-suspending agent is composed of the following components in percentages by weight: 1%-30% of the pyraclostrobin, 1%-30% of the fluxapyroxad, 0.1%-10% of a capsule wall material, 5%-25% of an auxiliary agent, 1%-30% of an organic solvent, and the balance of water. According to the preparation method disclosed by the invention, a pyraclostrobin microcapsule suspensding agent is prepared firstly, and the pyraclostrobin microcapsule suspending agent reacts with a fluxapyroxad suspending agent and the like to obtain the microcapsule suspension-suspending agent containing the pyraclostrobin and the fluxapyroxad. The microcapsule suspension-suspending agent containing the pyraclostrobin and the fluxapyroxad obtained by the preparation method provided by the invention has significantly better prevention and control effects on a plurality of crop diseases than other agents containing the same active ingredients, and has good effect persistent performance.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a microcapsule suspension-suspension agent containing pyraclostrobin and flufenapyramide and a preparation method thereof. Background technique [0002] Pyraclostrobin is a broad-spectrum, high-efficiency fungicide, which can effectively control crop diseases caused by Ascomycetes, Basidiomycetes, Deuteromycetes and Oomycetes, and is a plant health product. It is beneficial to crop growth, enhances crop tolerance to environmental impact, delays aging, makes leaves greener, and improves crop yield and quality. Flufenapyramide belongs to the succinate dehydrogenase inhibitor (SDHI) class of fungicides. It has the characteristics of high efficiency, broad spectrum, long-lasting effect, strong selectivity and excellent systemic conductivity. It has both preventive and therapeutic effects. It can inhibit spore germination, spore tube elongation, mycelium growth and spore formation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/24A01N43/56A01N25/28A01N25/04A01P3/00
CPCA01N25/04A01N25/28A01N43/56A01N47/24
Inventor 刘润峰东琴潘静高敬雨罗湘仁孙良宏丁文明陈坤张孝武陶代雨张磊
Owner 北京明德立达农业科技有限公司
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