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Quickly disintegrated imidacloprid and emamectin benzoate water dispersible granules and preparation method thereof

A technology of imidacloprid first dimension and dispersible granules, applied in the field of pesticides, can solve problems such as poor disintegration of water dispersible granules, and achieve the effects of fast disintegration and dispersion in water, high dispersion and suspension rate, and small particle size.

Active Publication Date: 2012-11-07
中化化工科学技术研究总院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Water-dispersible granules prepared by traditional granulation methods generally have the problem of poor disintegration

Method used

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  • Quickly disintegrated imidacloprid and emamectin benzoate water dispersible granules and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Example 1 4.5% imidacloprid+0.5% emamectin emamectin saline dispersible granules and preparation method thereof

[0017] The components of the formula and their mass percentages are: 96.5% imidacloprid technical 4.7%, 72.0% emamectin benzoate technical 0.7%, dispersant 8.0%, wetting agent 2.0%, kaolin 20.0%, corn starch 20.0%, Silica 9.0%, white carbon black 35.6%.

[0018] The preparation method of this water-dispersible granule is:

[0019] Put 4.7g of 96.5% imidacloprid technical medicine, 0.7g of 72.0% emamectin benzoate technical medicine, 8.0g of dispersant, 2.0g of wetting agent, 20.0g of kaolin, 23.0g of white carbon black, and 41.6g of water into a sand mill Sand milling until the particle size is below 5 μm, then add 9.0 g of jet-milled silicon dioxide, 20.0 g of corn starch, and 12.6 g of white carbon black, stir evenly, extrude and granulate on the extrusion equipment, and dry After that, it is 4.5% imidacloprid + 0.5% emamectin benzoate saline dispersible...

Embodiment 2

[0021] Example 2 9.0% imidacloprid+1.0% emamectin emamectin saline dispersible granules and preparation method thereof

[0022] The components of the formula and their mass percentages are: 96.5% imidacloprid technical 9.4%, 72.0% emamectin benzoate technical 1.4%, dispersant 8.0%, wetting agent 2.0%, kaolin 10.0%, corn starch 20%, White carbon black 49.2%.

[0023] The preparation method of this water-dispersible granule is:

[0024] 9.4g of 96.5% imidacloprid, 1.4g of 72.0% emamectin benzoate, 8.0g of dispersant, 2.0g of wetting agent, 10.0g of kaolin, 20g of cornstarch, and 49.2g of water, put them into a sand mill for sanding, Sand mill until the particle size is below 5 μm, then add 49.2 g of white carbon black, stir evenly, extrude and granulate on the extrusion equipment, and after drying, it will be 9.0% imidacloprid + 1.0% emamectin benzoate saline dispersible granules.

[0025] After testing, the number of disintegration of the water-dispersible granules was 2 time...

Embodiment 3

[0026] Example 3 18.0% imidacloprid+2.0% emamectin emamectin saline dispersible granules and preparation method thereof

[0027] The components of the formula and their mass percentages are: 96.5% imidacloprid technical 18.8%, 72.0% emamectin benzoate technical 2.8%, dispersant 10.0%, wetting agent 2.0%, kaolin 10.0%, corn starch 20%, Sodium sulfate 15.0%, white carbon black 21.4%.

[0028] The preparation method of this water-dispersible granule is:

[0029] 96.5% imidacloprid technical 18.8g, 72.0% emamectin benzoate technical 2.8g, dispersant 10.0g, wetting agent 2.0g, kaolin 10.0g, water 56.4g, put into the sand mill and grind until the grain diameter below 5μm, then add 20.0g of cornstarch, 15.0g of sodium sulfate, 21.4g of white carbon black, stir evenly, extrude and granulate on extrusion equipment, after drying, it will be 18.0% imidacloprid + 2.0% emamectin benzoate salt water Dispersible granules.

[0030] After testing, the number of disintegration of the water-d...

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Abstract

The invention belongs to the technical field of pesticides, and relates to quickly disintegrated imidacloprid and emamectin benzoate water dispersible granules and a preparation method thereof. A formula comprises the following components: imidacloprid and emamectin benzoate in a mass ratio of 9:1, 3.0 to 20.0 percent of dispersant, 1.0 to 5.0 percent of wetting agent, 0 to 20.0 percent of disintegrating agent and the balance of filler. The preparation method comprises the following steps of: changing a part of components in the formula into water, grinding to obtain a suspending agent, adding the changed components into the suspension, stirring uniformly, granulating with a 'dry method', and drying, thus obtaining the water dispersible granules. According to the technology, the conventional equipment is integrated, and production can be carried out without adding expensive equipment; and due to small granule diameter and low requirement for the dispersion wetting agent, the prepared water dispersible granules have the characteristics of small granule diameter, quick dispersion and disintegration in water and good dispersion and suspension properties.

Description

technical field [0001] The invention belongs to the technical field of pesticides, in particular to a rapidly disintegrating imidacloprid emamectin salt water dispersible granule and a preparation method thereof. Background technique [0002] Water-dispersible granules are a new dosage form developed in recent decades. It mainly consists of original drug, dispersant, wetting agent, disintegrant, pH regulator, stabilizer, binder, filler and so on. The disintegration of water-dispersible granules will affect the dispersibility and use efficiency of the preparation. Water-dispersible granules prepared by traditional granulation methods generally have the problem of poor disintegration. The disintegration of water-dispersible granules is generally related to the fillers, dispersants, wetting agents used and the particle size of the preparation itself. When the filler, dispersant, and wetting agent are constant, when 90% of the material particle size of the preparation is less ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N51/00A01N43/90A01N25/14A01P7/04
Inventor 卢忠利张宗俭刘宁仲晓萍
Owner 中化化工科学技术研究总院有限公司
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