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Water dispersion granules of pesticide, and preparation method

A kind of technology of dispersing particles and dispersing agent

Inactive Publication Date: 2007-05-09
新沂市中港农用化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the dosage form of water-dispersible granules appeared relatively late, in order to fully utilize and enhance the advantages of this dosage form, there are still many areas that need to be improved in the selection and dosage of various excipients, as well as the preparation method.

Method used

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  • Water dispersion granules of pesticide, and preparation method
  • Water dispersion granules of pesticide, and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Embodiment 1 70% thiophanate-methyl water-dispersible granules

[0056] Weighing the original powder of thiophanate-methyl (content > 98%) accounts for 71%, the wetting agent di-n-propylnaphthalene sulfonate accounts for 4%, and the dispersing agent cresol-formaldehyde and sodium sulfite condensate accounts for 1%. %, disintegrant sodium pyrophosphate accounts for 2%, binder gum arabic accounts for 1%, stabilizer polyoxyethylene ether 2%, and then fills up to 100% (mass content) with diluent carrier kaolin. Processing method: spraying method - the above-mentioned raw powder, wetting agent, dispersant, disintegrating agent, binder, stabilizer and diluent carrier are processed into a suspending agent by a sand mill or a sand mill kettle according to the formula, and then sprayed Granulate, sieve and test to obtain 70% thiophanate-methyl water-dispersible granules with a pass rate of about 98%. After testing, the active ingredient content is 70.3%, moisture 99%, suspensio...

Embodiment 2

[0057] Embodiment 2 75% bensulfuron-methyl water-dispersible granules

[0058]Weighing the original powder of bensulfuron-methyl (content > 95%) accounts for 76%, the wetting agent fatty amide N-methyl taurate accounts for 2%, and the dispersing agent sodium naphthalenesulfonate formaldehyde condensate accounts for 3%. %, disintegrant lactose 8%, binder methyl cellulose accounts for 2%, stabilizer sodium alkylbenzene sulfonate 1%, and then fill up to 100% (mass content) with diluent carrier kaolin. Processing method: Extrusion method - mix the above raw powder, wetting agent, dispersant, disintegrant, stabilizer and diluent carrier according to the formula, mix them evenly in a mixer, process and pulverize them to make mother powder, and then make mother powder Mix evenly with the binder, granulate through extrusion equipment, dry, screen, and test to obtain 75% bensulfuron-methyl water-dispersible granules with a pass rate of about 97%. After inspection, the active ingredien...

Embodiment 3

[0059] Embodiment 3 25% emamectin benzoate water dispersible granules

[0060] Take by weighing emamectin benzoate (content > 60%) percentage content ratio accounts for 25.5%, wetting agent benzyl naphthalene sulfonate accounts for 6%, the dispersant SS of dispersant Hearst company accounted for 5%, disintegrant sodium tripolyphosphate 2%, binder polyvinylpyrrolidone accounted for 5%, stabilizer polyoxyethylene ether 5%, and then filled up to 100% (mass content) with diluent carrier white carbon black. Processing method: Extrusion method - mix the above raw powder, wetting agent, dispersant, disintegrant, stabilizer and diluent carrier according to the formula, mix them evenly in a mixer, process and pulverize them to make mother powder, and then make mother powder Mix evenly with the binder, granulate through extrusion equipment, dry, screen, and detect to obtain 25% emamectin benzoate water-dispersible granules with a pass rate of about 98%. After inspection, the active ing...

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Abstract

A water-dispersing particle of agricultural chemical contains active component, wetting agent, disperser, disintegrant chosen from sodium pyrophosphate, potassium pyrophosphate, sodium tripolyphosphate, sodium bihydrogen phosphate and polyose, adhesive, and diluent. Its preparing process is also disclosed.

Description

technical field [0001] The invention relates to pesticides, in particular to water-dispersible granules of pesticides such as fungicides, insecticides, herbicides and plant growth regulators and a preparation method thereof. Background technique [0002] At present, there are many types of pesticides, but the common types are fungicides, insecticides, herbicides, and plant growth regulators, and most of them appear in the form of powder, emulsifiable concentrate, suspension concentrate, and water formulation, and have different shortcomings, such as : Disadvantages of powder——when it is operated and used, it is easy to fly, pollute the environment, and sometimes it is easy to burn or explode. When stored for a long time, it is easy to absorb moisture and decompose, which will affect the product quality. Disadvantages of emulsifiable concentrates - solvents and emulsifiers contain carcinogens harmful to the human body, pollute the environment, and are flammable or explosive....

Claims

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Application Information

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IPC IPC(8): A01N25/14A01N25/32A01N25/24
Inventor 王金华梁龙华郁桐徐继文徐百顺
Owner 新沂市中港农用化工有限公司
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