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Triazophos emulsion in water without organic solvent and preparation method thereof

A technology of organic solvent and triazophos, which is applied in the field of water emulsion of broad-spectrum insecticide, acaricide and nematicide triazophos, can solve the problem of large amount of surfactant, easy stratification, and incomplete replacement of organic solvent by water. and other problems, to achieve the effect of obvious environmental protection benefits, reduced usage, and increased water usage

Inactive Publication Date: 2011-10-05
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Although the oil-water dispersion system of water emulsion has been studied as early as the early 19th century, water emulsion has not been used in conventional pesticide varieties so far because of its poor stability, easy delamination, and large amount of surfactant. There is less water emulsion, a new dosage form
Moreover, although the water-emulsion formulations currently on the market have been partially replaced by water or the organic solvent in the emulsifiable concentrate, the use of organic solvents in the water-emulsion formulations has not been completely replaced by water.

Method used

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  • Triazophos emulsion in water without organic solvent and preparation method thereof
  • Triazophos emulsion in water without organic solvent and preparation method thereof
  • Triazophos emulsion in water without organic solvent and preparation method thereof

Examples

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Effect test

Embodiment 1

[0025] Add 25g op-10 (emulsifier) ​​in reactor, add 1500mL tap water again, make its reaction dissolve after stirring 5 minutes, add 4.1g potassium persulfate as polymerization initiator, add 180mL methyl acrylate after stirring, in React at 60°C for 3h. Then add 135g of the original drug of triazophos, and at the same time add 10mL of antifreeze agent ethylene glycol, and continue the reaction for 3h. Add 0.5 g of p-benzoquinone after the reaction is completed and cool, and pour it into a container to obtain the required triazophos-water emulsion.

Embodiment 2

[0027] Add 80g of sodium dodecylbenzenesulfonate (emulsifier) ​​to the reaction kettle, then add 1300mL of tap water, stir to make it react and dissolve, add 12.5g of benzoyl peroxide as a polymerization initiator, add 900mL of benzene after stirring evenly Ethylene, reacted at 60°C for 3h. Then add 600g of triazophos as the original drug, and at the same time add 3g of initiator benzoyl peroxide and 150mL of styrene, and react for 4h. After the reaction is completed and cooled, add 2.5 g of stabilizer succinic acid, 2.5 g of polymerization inhibitor p-benzoquinone, and add 30 mL of antifreeze ethylene glycol at the same time, and pour it into a container to obtain the required triazophos-water emulsion.

Embodiment 3

[0029] Add 80g of polyoxyethylene lauryl ether (emulsifier) ​​into the reaction kettle, then add 1300mL of tap water, stir for a period of time to make it react and dissolve, add 12.5g of azobisisobutyronitrile as a polymerization initiator, stir well and then add 900mL of methyl methacrylate was reacted at 60°C for 3h. Then add 600g triazophos former medicine (add initiator azobisisobutyronitrile 3g, methyl methacrylate 150mL simultaneously, react 4h. After reaction finishes cooling, add stabilizer succinic acid 2.5g, polymerization inhibitor p-phenylene Quinone 2.5g, add 30mL of antifreeze agent ethylene glycol simultaneously, pour it into the container and obtain the required triazophos-water emulsion.

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Abstract

The invention relates to a triazophos emulsion in water without organic solvent and a preparation method thereof. The form of the emulsion in water is characterized in that the organic solvent is not used. The triazophos emulsion in water without organic solvent is characterized by comprising the following components in percentage by weight: 1-40% of triazophos, 1-40% of polymerized monomer, 0.1-5% of initiator, 1-20% of emulsifying agent, 0-10% of stabilizer, 0.1-5% of polymerization inhibitor, 0-8% of antifreezing agent, 0-5% of antifoaming agent and the balance of water, wherein the sum of the percentage by weight of all materials is 100%. The triazophos emulsion in water without organic solvent does not contain the organic solvent, the use amount of the emulsion in water is lower than the existing triazophos emulsion in water, the triazophos emulsion in water disclosed by the invention has low toxicity on people, livestock and beneficial living beings and has obvious environmentally-friendly benefit.

Description

technical field [0001] The invention relates to an emulsion in water of a broad-spectrum insecticide, acaricide and nematicide triazophos and a preparation method thereof. Background technique [0002] Organic solvents in pesticide emulsifiable concentrates not only cause a waste of petroleum resources and increase production costs, but also pollute the environment and are harmful to pesticide applicators. In some countries, the use of emulsifiable concentrates containing aromatic hydrocarbon solvents has been restricted or banned, which has prompted Pesticide formulations are constantly updated and developed, among which water-based formulation is one of the leading directions for the development of pesticide formulations. [0003] Pesticide emulsion in water (Emulsion oil in water, EW) is the water-insoluble original drug liquid or the liquid obtained by dissolving the original drug in a water-insoluble organic solvent as the dispersed phase, with the aid of emulsifiers an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01P7/04A01N57/16A01P7/02
Inventor 马睿暴峰高洁侯玉帮沈凯燕陈涛王国珍
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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