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Microcapsule suspending agent containing azoxystrobin and pyraclostrobin

A technology of pyraclostrobin and microcapsule suspension, which is applied in the direction of fungicides, biocides, biocides, etc., and can solve the problem of oxidation and biodegradation of azoxystrobin and pyraclostrobin , Single-dose microcapsule suspensions have poor control effects and are not closed, etc., to meet the needs of pollution-free control, not easy to resist drug resistance, and have long-lasting effects

Inactive Publication Date: 2015-11-25
GUANGDONG ZHONGXUN AGRI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The miniemulsion polymerization method is a widely used method for preparing the capsule skin of microcapsule suspension. Due to the unsealed nature of conventional emulsion polymerization latex particles, it cannot solve the problems of oxidation and biodegradation of azoxystrobin and pyraclostrobin. Characteristics, the control effect of azoxystrobin or pyraclostrobin single-dose microcapsule suspension reported in the literature is not good

Method used

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  • Microcapsule suspending agent containing azoxystrobin and pyraclostrobin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Example 1: 20% azoxystrobin · pyraclostrobin microcapsule suspension.

[0022] 1. Preparation method:

[0023] (1) Accurately weigh 8 grams of capsule wall polyacrylate, add the remaining amount of deionized water, mix evenly, heat and stir, and control the temperature at 60-70°C to make it completely melted and ready for use.

[0024] (2) Accurately weigh 19 grams of azoxystrobin technical substance and 1 gram of pyraclostrobin technical substance, dissolve completely and evenly with 3 grams of xylene, add emulsifier 3 grams of alkylarylphenol polyoxyethylene ether phosphate , castor oil polyoxyethylene ether 1.5 grams, stand-by.

[0025] (3) In the case of step (1) stirring, the temperature is controlled at 60-70 ° C, add 2 grams of dispersant alkylaryl polyoxypropylene polyoxyethylene ether, and then slowly add step (2) to make it mixed and emulsified uniform.

[0026] (4) Granulating by miniemulsion polymerization.

[0027] (5) Separating, drying, and obtaining ...

Embodiment 2

[0030] Example 2: 30% azoxystrobin · pyraclostrobin microcapsule suspension.

[0031] 1. Preparation method:

[0032] (1) Accurately weigh 10 grams of capsule wall polyacrylate, add the remaining amount of deionized water, mix evenly, heat and stir, and control the temperature at 60-70°C to make it completely melted and ready for use.

[0033] (2) Accurately weigh 25 grams of the original drug of azoxystrobin and 5 grams of the original drug of pyraclostrobin, fully dissolve it completely and evenly with 8 grams of xylene, and add 4.5 grams of emulsifier alkylarylphenol polyoxyethylene ether phosphate , castor oil polyoxyethylene ether 2 grams, stand-by.

[0034] (3) In the case of step (1) stirring, the temperature is controlled at 60-70 ° C, add 3.5 grams of dispersant alkylaryl polyoxypropylene polyoxyethylene ether, and then slowly add step (2) to make it mixed and emulsified uniform.

[0035] (4) Granulating by miniemulsion polymerization.

[0036] (5) Separating, dry...

Embodiment 3

[0040] The 20% azoxystrobin pyraclostrobin microcapsule suspension that adopts above-mentioned implementation one to make is used for preventing and treating potato powder scab in the field, and the results are shown in Table 1; Kresstrobin microcapsule suspension was used at 500 g / mu to prevent and control potato powder scab, and the control effect reached 95.3% 15 days after the drug, which was better than that of the contrast agent 20% azoxystrobin water emulsion and 19% azoxystrobin microcapsule suspension 90.5% and 84.2%, the damage of potato powder scab can still be effectively controlled 90 days after the application, and the control effect reaches 94.2%, which is better than the 89.5% of the control agent 20% azoxystrobin water emulsion and 19% azoxystrobin microcapsule suspension. % and 81.2%.

[0041] Compared with existing emulsifiable concentrates and granules, the microcapsule suspension of the present invention does not improve the stability, but also prolongs th...

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Abstract

The invention relates to a microcapsule suspending agent containing azoxystrobin and pyraclostrobin. Azoxystrobin and pyraclostrobin are utilized as a capsule core, and polyacrylate is utilized as a capsule wall material. The microcapsule suspending agent containing azoxystrobin and pyraclostrobin consists of the following components in percentage by weight: 1%-35% of azoxystrobin, 1%-35% of pyraclostrobin, 3%-10% of a capsule core solvent, 5%-8% of a capsule wall material, 3%-8% of an emulsifying agent, 1%-3% of a dispersing agent and the balance of water. The microcapsule suspending agent containing azoxystrobin and pyraclostrobin is high in stability, long in lasting period, safe in use and less in environmental pollution.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, in particular to a microcapsule suspension containing azoxystrobin and pyraclostrobin and a preparation method thereof. Background technique [0002] Chemical control is an important means for humans to prevent and control agricultural and forestry diseases and insect pests. Chemical pesticides play a very important role in increasing agricultural production and income. and social issues. It is only due to the chemical pesticide itself, and to a large extent due to the unreasonable processing and application methods of the pesticide formulation. According to reports, the utilization rate of conventional pesticides is only 20% to 30%, while the loss rate through various channels is as high as 50% to 60%, which is not only a waste in economy, but also causes extensive environmental pollution. Therefore, it has become one of the future development directions of pesticide dosage forms to devel...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/24A01N25/04A01N25/28A01P3/00A01N43/54
Inventor 陈军彭述明王敏吴吉龙
Owner GUANGDONG ZHONGXUN AGRI TECH