Water dispersible granule for prevention and control of molluscs and preparation method of water dispersible granule

A mollusk, dispersing particle technology, applied in the fields of botanical equipment and methods, animal repellents, biocides, etc., can solve the problems of dust drift, low content of active ingredients, increased transportation costs, etc. and environmental pollution, high content of active ingredients, and low cost of environmental treatment

Active Publication Date: 2017-08-04
广东农密生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are: 1. It cannot be dissolved in water, can not be sprayed, and can only be sprinkled. In order to prevent a large amount of drugs from remaining in the environment, the active ingredient content is low, generally less than 10%, and because the drug is distributed in the roots of the crops, it is harmful to the leaves of the crops. 2. A large number of inactive carriers cause waste and high transportation costs
The disadvantages are: 1. The production process is dry crushing, with large dust and high requirements for environmental governance; 2. Dust drifts during use, endangering the health of operators, polluting the environment, and easily causing phytotoxicity; 3. Spraying after diluting with water Spraying, easy to clog the nozzle
The disadvantages are: 1. The content of active ingredients is lower than that of wettable powder; 2. There is a lot of water in the product, which causes inconvenience and waste in transportation, and increases transportation costs; 3. The storage stability is poor and it is easy to agglomerate

Method used

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  • Water dispersible granule for prevention and control of molluscs and preparation method of water dispersible granule
  • Water dispersible granule for prevention and control of molluscs and preparation method of water dispersible granule
  • Water dispersible granule for prevention and control of molluscs and preparation method of water dispersible granule

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A water-dispersible granule for preventing and controlling molluscs, the water-dispersible granule is composed of the following components in mass percentage: 2% metaldehyde, 50% niclosamide ethanolamine salt, sodium dodecylbenzenesulfonate 2%, methylnaphthalenesulfonate formaldehyde condensate 8%, anhydrous sodium sulfate 2.5%, modified starch 3%, polyether modified organosilane 0.5%, water-soluble starch to make up 100%.

[0030] The preparation method of water-dispersible granules is as follows: put various materials into a high-shear homogeneous kettle, add appropriate amount of ion-free, carry out high-speed dispersion, and then repeatedly sand-grind on a sand mill until 95% of the particles are less than 5 μm. Spray drying and granulation to obtain water-dispersible granules. The technical indicators of the water-dispersible granules prepared in this embodiment are shown in Table 1.

[0031] Table 1

[0032] technical indicators result Metaldehyd...

Embodiment 2

[0034] A water-dispersible granule for preventing and controlling molluscs, the water-dispersible granule is composed of the following components in mass percentage: 60% metaldehyde, 2% fatty alcohol polyoxyethylene ether, 5.5% polymer polychitosan, 3% of modified lignosulfonate, 3% of cellulose, 5% of modified starch, 0.5% of polyether modified organosilane, and 100% of water-soluble starch.

[0035] The preparation method of water-dispersible granules is as follows: put various materials into a high-shear homogeneous kettle, add appropriate amount of ion-free, carry out high-speed dispersion, and then repeatedly sand-grind on a sand mill until 95% of the particles are less than 5 μm. Spray drying granulation to obtain water-dispersible granules with small particle size, and continue to spray water droplets containing binder on the obtained small-size water-dispersible granules (using agglomeration method for secondary granulation) to obtain water-dispersible granules with lar...

Embodiment 3

[0039] A water-dispersible granule for preventing and controlling molluscs, the water-dispersible granule is composed of the following components in mass percentage: metaldehyde 70%, fatty alcohol polyoxyethylene ether 3%, polycarboxylate sodium salt 5%, Tea saponin 6%, cellulose 3%, modified starch 3%, polyether modified organosilane 0.5%, and water-soluble starch make up 100%.

[0040] The preparation method of water-dispersible granules is as follows: put various materials into a high-shear homogeneous kettle, add appropriate amount of ion-free, carry out high-speed dispersion, and then repeatedly sand-grind on a sand mill until 95% of the particles are less than 5 μm. Spray drying and granulation to obtain water-dispersible granules. The technical indicators of the water-dispersible granules prepared in this embodiment are shown in Table 3.

[0041] table 3

[0042] technical indicators result Metaldehyde mass fraction 70.5％ Wetting time, s 53 secon...

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Abstract

The invention discloses a water dispersible granule for prevention and control of molluscs and a preparation method of the water dispersible granule. The water dispersible granule comprises the following ingredients by mass percentage: 0-85% of metaldehyde, 0-85% of niclosamide ethanolamine salt, 1-3% of wetting agent, 5-20% of emulsification dispersant, 0-5% of disintegrating agent, 0-10% of binding agent, 0.5% of defoaming agent, and a carrier to reach 100%, wherein the mass percentage of metaldehyde and the mass percentage of niclosamide ethanolamine salt cannot be 0% at the same time. The water dispersible granule is convenient to transport, lower in transportation cost, high in active ingredient content, good in dispersity, high in suspensibility and higher in storage stability; no dust is generated basically in a production process; the environmental control cost is low; the water dispersible granule is sprayed for application after the water dispersible granule is diluted with water; the residue of the water dispersible granule in an environment is reduced; the possibility of spray head blocking is low; no dust drift exists during use; the influence on an operator and the surrounding environment is smaller; and the possibility of hazards and environmental pollution is low.

Description

technical field [0001] The invention relates to the technical field of pesticide preparation, in particular to a water-dispersible granule for mollusk prevention and control and a preparation method thereof. Background technique [0002] For a long time, the prevention and treatment of molluscs (such as: oncomelania, apple snail, slug, snail, etc.) is to use metaldehyde or niclosamide ethanolamine salt with high drug efficacy and environmental friendliness as the main drug. It is insoluble in water, so it is applied by making wettable powder, suspension or granule to achieve the effect of use, but these three dosage forms have their shortcomings. [0003] The advantages of granules are: 1. Convenient transportation; 2. High storage stability; 3. There is basically no dust in the production process, and the cost of environmental treatment is low; 4. There is no dust drift during use, and it has less impact on operators and the surrounding environment. The disadvantages are: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N43/24A01N37/40A01N33/08A01P9/00
CPCA01N25/04A01N33/08A01N37/40A01N43/24
Inventor 黄宗胜谈信
Owner 广东农密生物科技有限公司
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