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Water suspension agent produced by compounding dimethomorph and cymoxanil and preparation method thereof

A technology of dimethomorph and water suspending agent, which is applied in the field of water suspending agent compounded by dimethomorph and triamuril and its preparation field, can solve the problem of affecting the physical stability of the water suspending agent, restricting development and popularization and application, Easy to decompose and other problems to achieve the effect of reducing the risk of drug resistance, solving adverse effects, low toxicity and irritation

Inactive Publication Date: 2017-03-15
LIMIN CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the pesticide formulations containing cymoxanil components on the market are mainly wettable powders and water-dispersible granules, mainly because cymoxanil has a high solubility in water and the presence of amide bonds in the molecule makes it extremely unstable in water. It is easy to decompose, and the water suspension product is easy to paste when it is stored in heat, which seriously affects the physical stability of the water suspension, which limits the development and popularization of the water suspension containing cymoxanil to a large extent.

Method used

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  • Water suspension agent produced by compounding dimethomorph and cymoxanil and preparation method thereof
  • Water suspension agent produced by compounding dimethomorph and cymoxanil and preparation method thereof
  • Water suspension agent produced by compounding dimethomorph and cymoxanil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 20% dimethomorph and 10% cymoxanil composite water suspension

[0036] Dimethomorph technical 20%, cymoxanil technical 10%, dispersant acrylic acid maleic acid copolymer 3%, wetting and penetrating agent alkylphenol polyoxyethylene sodium sulfate 1%, pH regulator hydrochloric acid 0.5% , antifreeze ethylene glycol 5%, white carbon black 0.5%, xanthan gum 0.25%, magnesium aluminum silicate 0.75%, preservative potassium sorbate 0.375%, organic silicon defoamer 0.2%, and the balance is water.

Embodiment 2

[0037] Example 2 25% dimethomorph and 15% cymoxanil composite water suspension

[0038] Dimethomorph technical 25%, cymoxanil technical 15%, dispersant alkylnaphthalene sulfonate formaldehyde condensate 3%, wetting and penetrating agent alkylphenol polyoxyethylene ether 1%, pH regulator citric acid 0.5%, antifreeze urea 4%, white carbon black 0.5%, xanthan gum 0.2%, magnesium aluminum silicate 0.6%, preservative potassium sorbate 0.3%, organosilicon defoamer 0.2%, and the balance is water.

Embodiment 3

[0039] Example 3 30% dimethomorph and 15% cymoxanil composite water suspension

[0040] Dimethomorph technical 30%, cymoxanil technical 15%, dispersant hydrophobically modified carboxylic acid copolymer 3%, wetting and penetrating agent styrylphenol polyoxyethylene ether 1.5%, pH regulator glacial acetic acid 1%, antifreeze propylene glycol 5%, white carbon black 1%, xanthan gum 0.16%, magnesium aluminum silicate 0.48%, preservative potassium sorbate 0.24%, organic silicon defoamer 0.2%, and the balance is water.

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Abstract

A water suspension agent produced by compounding dimethomorph and cymoxanil includes: a dimethomorph active compound, a cymoxanil active compound, a dispersant, a wetting and penetrating agent, a pH conditioning agent, an anti-freeze agent, white carbon black, xanthan gum, magnesium aluminum silicate, potassium sorbate, an organic silicon defoamer, and the balanced being water. A preparation method includes the steps of: according to the ratio, weighing the dimethomorph active compound, the cymoxanil active compound and the white carbon black, and uniformly mixing the components; according to the ratio, weighing the dispersant, the wetting and penetrating agent, the anti-freeze agent, the pH conditioning agent and water in a container, and heating and stirring the components; and shearing and sand-milling the mixed components to obtain a water suspension agent primary product; and adding a colloidal solution containing the xanthan gum, the magnesium aluminum silicate and the potassium sorbate, and stirring the mixture for 0.5-1.5 h to obtain a finish product of the water suspension agent. The method solves the problems that the cymoxanil is liable to decompose in water and the water suspension agent product is liable to become creaming.

Description

[0001] Technical field: [0002] The invention relates to the field of preparation of pesticide preparations, in particular to an aqueous suspension compound of dimethomorph and cymoxanil and a preparation method thereof. [0003] Background technique: [0004] Pesticide water suspensions mostly use water as the dispersion medium, and the insoluble or slightly soluble solid drug is ground and pulverized, and evenly dispersed with the help of surfactants and other additives to form a fine particle with high suspension and flowability. relatively stable liquid-solid phase system. Compared with emulsifiable concentrate, avoid using a large amount of organic solvents; compared with wettable powder, there is no dust flying and drifting during processing and use, and the toxicity and irritation to humans and animals are relatively low, which can reduce the phytotoxicity of crops, let alone It will burn during storage and transportation, and has high safety; moreover, it has excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N47/34A01N43/84A01P3/00
CPCA01N25/04A01N43/84A01N47/34A01N2300/00
Inventor 马衍峰孙敬权李新生孙丽梅王跃廷
Owner LIMIN CHEM CO LTD