Emamectin benzoate water dispersible granule capable of fast disintegrating and preparation method thereof

A manufacturing method and technology of disperse particles, which are applied in the field of pesticides, can solve the problems of unsatisfactory suspension rate of active ingredients, slow disintegration speed, poor suspension rate of active ingredients, etc., and achieve shortening of stirring time, stable performance and high suspension rate Effect

Inactive Publication Date: 2010-12-15
HUIZHOU YINNONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water-dispersible granule pesticide products produced by the above two companies still have the disadvantages of slow disintegration speed and unsatisfactory suspension rate of active ingredients.
For example: the disintegration time of the 5% emamectin emamectin salt water dispersible granules produced by the above two companies is about 1 minute, the disintegration speed is slow and the suspension rate of active ingredients is not good

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] By weight percent, get 50% emamectin benzoate, 10% TERSPERSE 2425 and Morwet D-425 mixture composition dispersant, 15% glucose and urea, 5% TERWET1004 add double-helix conical mixer and mix, pulverizing; adding 20% ​​of kaolin as a filler and continuing to mix; adding water to the mixture to obtain pesticide granules with a particle size of 0.8-2 mm; drying the granules and sieving to make finished pesticides.

[0037] The emamectin emamectin saline dispersible granules produced by using this formula and process have the characteristics of rapid disintegration, and its detection indicators are as follows:

[0038] Test items

[0039] The method for measuring the disintegration time is as follows: add 0.5 g of pesticide sample particles at 25°C to a 100 ml stoppered measuring cylinder (inner height 22.5 cm, inner diameter 28 cm) containing 90 ml of distilled water, then clamp the middle of the measuring cylinder and plug the mouth of the measuring cylinder , so...

Embodiment 2

[0041] By weight percentage, get 30% emamectin benzoate, 20% dispersant of TERSPERSE 2425 and Morwet D-425 mixture, 10% glucose and urea, 5% TERWET1004 add double-helix conical mixer and mix, pulverizing; adding the remaining amount of kaolin and cornstarch as fillers and continuing to mix; adding water and moistening the mixture to produce pesticide granules with a particle size of 0.8-2 mm; drying the granules and sieving to make finished pesticides.

[0042] The emamectin emamectin saline dispersible granules produced by using this formula and process have the characteristics of rapid disintegration, and its detection indicators are as follows:

[0043] Test items

Embodiment 3

[0045] By weight percentage, get 30% emamectin benzoate, 15% NNO and dispersant composed of TERSPERSE 2700 mixture, 15% glucose and urea, and 1% TERWET 1004 into a double-helix conical mixer for mixing and pulverization; The remaining amount of diatomaceous earth and cornstarch are added as fillers to continue mixing; the mixture is added with water and moistened to produce pesticide granules with a particle size of 0.8-2mm; the granules are dried and sieved to make finished pesticides.

[0046] The emamectin emamectin saline dispersible granules produced by using this formula and process have the characteristics of rapid disintegration, and its detection indicators are as follows:

[0047] Test items

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PUM

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Abstract

The invention discloses an emamectin benzoate water dispersible granule pesticide and a preparation method thereof. The granule comprises 0.1-50% of emamectin benzoate, an active ingredient of the pesticide, 2-20% of dispersants, 5-15% of disintegration assistants, 0.1-5% of wetting agents and the balance fillers by weight. The preparation method is characterized by proportionally mixing the above ingredients except the fillers, grinding the mixture and then adding the fillers to be mixed; adding water to the mixture to prepare the pesticide granule with size of 0.8-2mm; and drying the granule and preparing the finished pesticide after sieving. The granule pesticide prepared by the method has disintegration speed of about 20s which is equivalent to 1/3 of that of the same kind of pesticide products commonly sold in the current markets, greatly shortens the stirring time during use and can obviously improve the working efficiency for the users, especially the farms and the units which use the product on a large scale.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a emamectin emamectin salt water dispersible granule and a manufacturing method thereof. Background technique [0002] Water-dispersible granules refer to the granules used after disintegrating and dispersing in water. It was initially successfully developed by the Swiss Ciba-Geigy company in the 1980s, and the sales volume increased year by year after the mid-1980s. The dosage form looks like granules, and the active ingredient is generally 60-90%. After it is put into water and stirred, it can be uniformly dissolved and dispersed in water like a wettable powder. Therefore, it has the characteristics of wettable powder and emulsion. Based on the analysis of the physical properties of the dosage form, water-dispersible granules are a new dosage form with the most superiority and competitiveness among the current pesticide dosage forms. The main components of this dosage form ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N43/90A01P7/02A01P7/04
Inventor 谭钟扬王爱臣
Owner HUIZHOU YINNONG TECH
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