Microcapsule suspension-suspending agent as well as preparation method and application thereof

A microcapsule suspension and suspending agent technology, applied in the field of pesticides, can solve the problems of poor storage stability, unstable drug efficacy, low melting point of pyraclostrobin, etc., to reduce the frequency of medication, reduce the amount of medication, sustained release and long-term effect The effect of prevention

Pending Publication Date: 2017-05-24
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

The melting point of pyraclostrobin is low, and there are problems of poor sto

Method used

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  • Microcapsule suspension-suspending agent as well as preparation method and application thereof
  • Microcapsule suspension-suspending agent as well as preparation method and application thereof
  • Microcapsule suspension-suspending agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] This example is used to illustrate the preparation of 20% by weight of pyraclostrobin-hexaconazole microcapsule suspension-suspension agent (10% by weight of pyraclostrobin and 10% by weight of hexaconazole).

[0038] Dissolve 20.6 grams of pyraclostrobin (content 98%) in 30 grams of solvent oil No. 150, add 2 grams of aliphatic polyisocyanates and 3 grams of sorbitan polyoxyethylene ether, stir to obtain the first mixture; After mixing 3 grams of sodium lignosulfonate, 0.2 grams of silicone antifoaming agent and 40.7 grams of water, then mixed with the first mixture, and then sheared at 10,000 rpm for 1 minute to obtain a second mixture; 0.5 g of ethylenediamine was added dropwise to the two mixtures, the temperature was raised to 50° C. for 2 hours and the reaction was maintained to obtain 100 g of the first material containing 20% ​​by weight of pyraclostrobin.

[0039] Mix 26.5 grams of hexaconazole original drug (content 95%), 2 grams of sodium ...

Example Embodiment

[0041] Example 2

[0042] This example is used to illustrate the preparation of 20% by weight of pyraclostrobin-hexaconazole microcapsule suspension-suspension agent (10% by weight of pyraclostrobin and 10% by weight of hexaconazole).

[0043]Dissolve 20.6 grams of pyraclostrobin (content 98%) in 35 grams of solvent oil No. 150, add 2.5 grams of aliphatic polyisocyanates and 3 grams of sorbitan polyoxyethylene ether, stir to obtain the first mixture; After mixing 3 grams of sodium lignosulfonate, 0.2 grams of silicone antifoaming agent and 35.2 grams of water, then mixed with the first mixture, and then sheared at 12,000 rpm for 1 minute to obtain the second mixture; 0.5 g of ethylenediamine was added dropwise to the two mixtures, and the temperature was raised to 50° C. for 2.5 hours and the reaction was maintained to obtain 100 g of the first material containing 20% ​​by weight of pyraclostrobin.

[0044] The preparation method of the second material is the same as in Examp...

Example Embodiment

[0046] Example 3

[0047] This example is used to illustrate the preparation of 20% by weight of pyraclostrobin-hexaconazole microcapsule suspension-suspension agent (10% by weight of pyraclostrobin and 10% by weight of hexaconazole).

[0048] Dissolve 20.6 grams of pyraclostrobin (content 98%) in 30 grams of solvent oil No. 150, add 2 grams of aliphatic polyisocyanates and 3.5 grams of sorbitan polyoxyethylene ether, stir to obtain the first mixture; After mixing 3 grams of sodium lignosulfonate, 0.2 grams of silicone antifoaming agent and 40.4 grams of water, they were mixed with the first mixture, and then sheared at 10,000 rpm for 1 minute to obtain a second mixture; 0.3 g of ethylenediamine was added dropwise to the two mixtures, the temperature was raised to 60° C. for 1.5 hours and the reaction was maintained for 1.5 hours to obtain 100 g of the first material containing 20% ​​by weight of pyraclostrobin.

[0049] The preparation method of the second material is the sa...

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Abstract

The invention discloses a microcapsule suspension-suspending agent as well as a preparation method and an application thereof. The microcapsule suspension-suspending agent contains an active component and a capsule wall material, wherein the active component comprises pyraclostrobin and hexaconazole, and on the basis of 100 parts by weight of pyraclostrobin, the microcapsule suspension-suspending agent contains 50-150 parts by weight of hexaconazole and 8-20 parts by weight of the capsule wall material. The microcapsule suspension-suspending agent has better storage stability and can be released in a controlled manner to control crop disease in a long term, the number of application times and the dosage are reduced, the cost is saved, and environment pollution is reduced.

Description

technical field [0001] The present invention relates to the field of pesticides, in particular to a microcapsule suspension-suspending agent and a preparation method and application thereof. Background technique [0002] Pyraclostrobin is a broad-spectrum and efficient fungicide that can effectively prevent and treat 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 impacts, delays senescence, makes leaves greener, and increases crop yield and quality. Hexaconazole is a sterol demethylation inhibitor with systemic, protective and therapeutic activities, which can effectively prevent and treat the diseases caused by Ascomycetes, Basidiomycetes and Deuteromycetes, especially those caused by Basidiomycetes and Ascomycetes Diseases such as powdery mildew, rust, scab, brown spot, anthracnose, etc. have excellent protection and eradication. ...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N25/04A01N47/24A01N43/653A01P3/00
Inventor 东琴徐妍马超王佳潘静高敬雨
Owner 北京明德立达农业科技有限公司
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