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Water dispersible granules of bactericide compounded by propineb and pyraclostrobin and preparation method thereof

A technology of pyraclostrobin and propineb, which is applied in the field of pesticides, can solve the problems of decreased drug efficacy and increased control costs, and achieves the effects of fast disintegration, no dust pollution, and easy storage

Inactive Publication Date: 2011-10-19
ZHEJIANG TIDE CROP TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the single-dose products of the above two pesticides have developed resistance during use, and the efficacy has dropped a lot compared with before, and the cost of control has also increased significantly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A fungicide water-dispersible granule compounded with propazone and pyraclostrobin, prepared from the following components by mass percentage: 95% of propazone and 95% of pyraclostrobin In some cases, 20% propenebine, 10% pyraclostrobin, 6% dispersant, 4% wetting agent, 5% disintegrant, 2% binder, and the rest is carrier.

[0040] Among them, the dispersant is Morwet D-425, the wetting agent is sodium lauryl sulfate, the disintegrant is magnesium aluminum silicate, the binder is sodium carboxymethyl cellulose, and the carrier is kaolin.

[0041] The preparation method of the present invention comprises the following steps:

[0042] Feed propineb, pyraclostrobin, dispersant, wetting agent, disintegrant, binder, carrier according to the feeding ratio, and mix evenly, finely pulverize by jet milling, then knead, and finally The product is obtained by extrusion granulation or granulation and drying in a boiling granulator.

Embodiment 2

[0044] A fungicide water-dispersible granule compounded with propazone and pyraclostrobin, prepared from the following components by mass percentage: 95% of propazone and 95% of pyraclostrobin In some cases, 30% of propazone, 20% of pyraclostrobin, 8% of dispersant, 3% of wetting agent, 5% of disintegrant, 0.5% of binder, and the rest is carrier.

[0045] Among them, the dispersant is Morwet D-425, the wetting agent is sodium lauryl sulfate, the disintegrant is magnesium aluminum silicate, the binder is sodium carboxymethyl cellulose, and the carrier is kaolin.

[0046] The preparation method of the present invention comprises the following steps:

[0047] Feed propineb, pyraclostrobin, dispersant, wetting agent, disintegrant, binder, and carrier according to the feeding ratio, mix evenly, finely pulverize through airflow milling, and then knead. The product is obtained by extrusion granulation or granulation and drying in a boiling granulator.

Embodiment 3

[0049] A fungicide water-dispersible granule compounded with propazone and pyraclostrobin, prepared from the following components by mass percentage: 95% of propazone and 95% of pyraclostrobin In the case of zinc 28%, pyraclostrobin 13%, dispersant 4%, wetting agent 2%, disintegrant 8%, binder 1.5%, and the balance is carrier.

[0050] Wherein, the dispersant is sodium lignosulfonate, the wetting agent is pull-off powder, the disintegrating agent is sodium sulfate, the binder is xanthan gum, and the carrier is activated clay.

[0051] The preparation method of the present invention comprises the following steps:

[0052] Feed water, propineb and pyraclostrobin, dispersant, wetting agent, disintegrant, binder, and carrier according to the feeding ratio, and add them into the mixing tank with a high-shear disperser, And mix evenly to make a suspension with a solid content of 50% to 70%; the suspension is then physically dispersed by a horizontal or vertical sand mill to form a ...

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Abstract

The invention relates to water dispersible granules of a bactericide compounded by propineb and pyraclostrobin, and a preparation method thereof, and belongs to the technical field of pesticides. The water dispersible granules are prepared from the following components in percentage by mass: 5 to 50 percent of propineb, 5 to 30 percent of pyraclostrobin, 1 to 8 percent of dispersant, 1 to 4 percent of wetting agent, 1 to 15 percent of disintegrant, 1 to 3 percent of binder, and the balance of carrier. The invention has the advantages that: the water dispersible granules have high dispersibility, wettability and suspensibility, are high in disintegration rate, and are easy to package and store, the dust pollution is avoided in the production process and the like; and the bactericidal spectrum is further widened.

Description

technical field [0001] The invention relates to a fungicide water-dispersible granule compounded with propazone and pyraclostrobin and a preparation method thereof, belonging to the technical field of pesticides. Background technique [0002] Pesticide preparations are gradually developing towards safety, environmental protection, and water-based. Water-dispersible granules are a new dosage form with the most advantages and competitiveness among the current pesticide dosage forms. In addition to the characteristics of general granules, water dispersible granules also exhibit the following characteristics: (1) No dust flying, which reduces environmental pollution, is safe for operators, and can make highly toxic varieties less poison. (2) Compared with wettable powder and suspending agent, it has high active ingredient content, high relative density and small volume, which is convenient for packaging, storage and transportation. (3) The storage stability and physical and ch...

Claims

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Application Information

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IPC IPC(8): A01N47/24A01N47/14A01N25/12A01P3/00
Inventor 杨征宇
Owner ZHEJIANG TIDE CROP TECH
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