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Water dispersible granules and preparation method thereof

A technology of dispersing granules and dispersing agents, which is applied in the field of pesticides and can solve the problems of granule bonding, reducing the efficacy of boscalid and pyraclostrobin, and lowering the melting point, etc.

Inactive Publication Date: 2021-11-16
HUIZHOU YINNONG TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the melting point of pyraclostrobin is 63.7°C-65.2°C, and the melting point is significantly lower after compounding with boscalid, which further reduces the melting point after compounding boscalid and pyraclostrobin In addition, since the processing of water-dispersible granules must go through the process of pulverization, granulation and drying, boscalid and pyraclostrobin are prone to melting during the pulverization, granulation and drying process, and then As a result, the extruded particles are cohesive and not loose, which greatly reduces the efficacy of boscalid and pyraclostrobin

Method used

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  • Water dispersible granules and preparation method thereof
  • Water dispersible granules and preparation method thereof
  • Water dispersible granules and preparation method thereof

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preparation example Construction

[0054] The application also provides a preparation method of the water-dispersible granule. The above-mentioned preparation method of water-dispersible granules is used to prepare the water-dispersible granules of any of the above-mentioned embodiments. The preparation method of the above-mentioned water-dispersible granules comprises the following steps: crushing pyraclostrobin, boscalid, dispersant, wetting agent, disintegration aid and filler to obtain corresponding crushed materials; crushing the crushed materials A granulation operation was performed to obtain water-dispersible granules.

[0055] In the preparation method of the above-mentioned water-dispersible granules, pyraclostrobin, boscalid, dispersant, wetting agent, disintegration aid and filler are pulverized to obtain corresponding pulverized materials, and the dispersant, pyrimidine The dispersion uniformity of pyraclostrobin and boscalid is conducive to improving the coating effect of the dispersant on pyracl...

Embodiment 1

[0075] 10kg pyraclostrobin, 20kg boscalid, 5kg 2700, 5.5kg Reax 910, 2kg YUS-SXC, 5kg ammonium sulfate, 10kg sodium citrate and 42.5kg corn starch were respectively pulverized to obtain corresponding pulverized materials use;

[0076] Mix the pulverized Reax 910, pyraclostrobin and boscalid, and add water for thorough mixing to obtain a mixture;

[0077] Add the crushed 2700 to the mixture and mix thoroughly;

[0078] Add YUS-SXC, ammonium sulfate, sodium citrate and cornstarch to the mixture and mix thoroughly to obtain a water-humidified mixture;

[0079] Extrusion granulation and drying are performed on the water-humidified mixture to obtain water-dispersible granules.

Embodiment 2

[0081] 13kg of pyraclostrobin, 25kg of boscalid, 5kg of D500, 10kg of Ufoxane 3A, 3kg of Terwet1004, 7kg of anhydrous sodium sulfate and 37kg of corn starch were respectively pulverized to obtain corresponding pulverized materials for use;

[0082] Mix the pulverized Ufoxane 3A, pyraclostrobin and boscalid, and add water for thorough mixing to obtain a mixture;

[0083] Add the crushed D500 into the mixture for thorough mixing;

[0084] Add Terwet1004, anhydrous sodium sulfate and cornstarch into the mixture for thorough mixing to obtain a water-humidified mixture;

[0085] Extrusion granulation and drying are performed on the water-humidified mixture to obtain water-dispersible granules.

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Abstract

The invention provides water dispersible granules and a preparation method thereof. The water dispersible granules are prepared from pyraclostrobin, boscalid, a dispersing agent, a wetting agent, a disintegrating aid and filler. The dispersing agent comprises lignosulfonate and a linear surfactant. A dispersion system formed by the water dispersible granules is relatively good in stability and relatively high in disintegration rate.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a water-dispersible granule and a preparation method thereof. Background technique [0002] Boscalid is a new type of nicotinamide fungicide, which has no cross-resistance with other fungicides. It mainly inhibits mitochondrial succinate dehydrogenase, hinders the tricarboxylic acid cycle, causes amino acid and sugar deficiency, and reduces energy. Interferes with cell division and growth, and can be transferred in plants through leaf penetration, has protective and therapeutic effects on plants, and pyraclostrobin is a broad-spectrum fungicide of methyl methoxyacrylate with a pyrazole structure , mainly by inhibiting the respiration of pathogenic bacteria, and transferring in plants through leaf surface penetration, thereby preventing and controlling pests and diseases. The compound use of boscalid and pyraclostrobin has systemic properties, as well as protective and therape...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/24A01N43/40A01N25/30A01N25/14A01P1/00A01P3/00
CPCA01N47/24A01N43/40A01N25/30A01N25/14
Inventor 莫俊锐韦沙迪谭葵廖联安
Owner HUIZHOU YINNONG TECH
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