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Preparation method of acetochlor emulsion in water pesticide

A water emulsion, acetochlor technology, applied in the field of pesticides, can solve the problems of poor thermodynamic stability, difficult to form a uniform emulsion, etc., and achieve the effects of improving the reaction process, improving the formulation effect, and strong carrying capacity

Pending Publication Date: 2022-02-01
李斌宇
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Because the existing acetochlor is a drug in the water emulsion, the thermodynamic stability state is poor, and it is difficult to form a uniform emulsion. Based on this, the present invention further improves the treatment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A kind of preparation method of acetochlor aqueous emulsion pesticide of the present embodiment, comprises the following steps:

[0025] Step 1: Preparation of homogeneous dispersion aid:

[0026] S1: Preparation of modified calcium carbonate; send the activated calcium carbonate into dimethylethanolamine and acetone for dispersion, the dispersion speed is 210r / min, the dispersion time is 10min, then add the silane coupling agent, continue to stir for 10min, Stirring is completed, washed with water, and dried;

[0027] S2: Preparation of polystyrene microspheres: react styrene, polyvinylpyrrolidone, azobisisobutyronitrile and absolute ethanol under a nitrogen atmosphere, cool to room temperature after the reaction, and centrifuge the product with ethanol and deionized The mixed solvent of water was repeatedly washed 4 times, and vacuum-dried to obtain polystyrene microspheres;

[0028] S3: Preparation of homogeneous dispersion aid: Add modified calcium carbonate to po...

Embodiment 2

[0039] A kind of preparation method of acetochlor aqueous emulsion pesticide of the present embodiment, comprises the following steps:

[0040] Step 1: Preparation of homogeneous dispersion aid:

[0041] S1: Preparation of modified calcium carbonate; send the activated calcium carbonate into dimethylethanolamine and acetone for dispersion, the dispersion speed is 240r / min, the dispersion time is 20min, then add the silane coupling agent, continue to stir for 20min, Stirring is completed, washed with water, and dried;

[0042] S2: Preparation of polystyrene microspheres: react styrene, polyvinylpyrrolidone, azobisisobutyronitrile and absolute ethanol under a nitrogen atmosphere, cool to room temperature after the reaction, and centrifuge the product with ethanol and deionized The mixed solvent of water was repeatedly washed 4 times, and vacuum-dried to obtain polystyrene microspheres;

[0043] S3: Preparation of homogeneous dispersion aid: Add modified calcium carbonate to po...

Embodiment 3

[0054] A kind of preparation method of acetochlor aqueous emulsion pesticide of the present embodiment, comprises the following steps:

[0055] Step 1: Preparation of homogeneous dispersion aid:

[0056] S1: Preparation of modified calcium carbonate; send the activated calcium carbonate into dimethylethanolamine and acetone for dispersion, the dispersion speed is 225r / min, the dispersion time is 15min, then add the silane coupling agent, continue to stir for 15min, Stirring is completed, washed with water, and dried;

[0057] S2: Preparation of polystyrene microspheres: react styrene, polyvinylpyrrolidone, azobisisobutyronitrile and absolute ethanol under a nitrogen atmosphere, cool to room temperature after the reaction, and centrifuge the product with ethanol and deionized The mixed solvent of water was repeatedly washed 5 times, and vacuum-dried to obtain polystyrene microspheres;

[0058] S3: Preparation of homogeneous dispersion aid: Add modified calcium carbonate to po...

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Abstract

The invention discloses a preparation method of an acetochlor emulsion in a water pesticide. The preparation method comprises the following steps: 1, preparing a uniform dispersing auxiliary agent: S1, preparation of modified calcium carbonate; 2, preparing a nano stabilizer; 3, preparing a repairing agent; 4, modifying a chitosan solution; and 5, repairing the soil. During preparation of the acetochlor in the emulsifier, the dispersity of the acetochlor is improved by adding the raw materials such as a uniform dispersing aid and a polymerization increasing agent, the polymerization increasing agent is prepared from the raw materials such as bentonite, epoxy resin, chitosan and silicone acrylic emulsion, and the lamellar structure of the bentonite has the organic adhesive property on the epoxy resin, so that the polymerization reaction of the acetochlor and the emulsifier is promoted, and the emulsification degree is improved; and the added uniform dispersing auxiliary agent is prepared from raw materials such as modified calcium carbonate and polystyrene microspheres.

Description

technical field [0001] The invention relates to the technical field of pesticides, in particular to a preparation method of acetochlor aqueous emulsion pesticide. Background technique [0002] Acetochlor is a widely used herbicide. It is one of the most important herbicides in the world and one of the most used herbicides in my country. It is a pre-emergence herbicide, which can control annual grass weeds and some annual broad-leaved weeds. It is suitable for corn, cotton, beans, peanuts, potatoes, rapeseed, garlic, tobacco, sunflower, castor, green onions, etc. [0003] Because the existing acetochlor is a drug in water emulsion, its thermodynamic stability is poor, and it is difficult to form a uniform emulsion. Based on this, the present invention further improves the treatment. Contents of the invention [0004] The object of the present invention is to provide a kind of preparation method of acetochlor aqueous emulsion pesticide, to solve the problem proposed in the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/26A01N25/04A01P13/00
CPCA01N37/26A01N25/04
Inventor 张津晶张军辉
Owner 李斌宇
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