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Flumetralin-containing aqueous emulsion composition and preparation method thereof

An aqueous emulsion and composition technology, applied in the field of pesticides, can solve the problems of increased environmental pollution, increased product cost, inconvenient storage and transportation, etc., and achieves the effects of reducing environmental pollution, low cost, and less equipment investment

Inactive Publication Date: 2010-09-15
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the dosage form of flumetramide registered is mainly emulsifiable concentrate, which contains a large amount of organic solvents, which not only increases the product cost, but also greatly increases the pollution to the environment and brings inconvenience to storage and transportation.

Method used

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  • Flumetralin-containing aqueous emulsion composition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] 25% flumetriamine aqueous emulsion, its composition and percentage by weight are:

[0028] Flumetamine 25%

[0029] First line oil 10%

[0030] Castor oil polyoxyethylene ether (epoxy value 40) 5%

[0031] Calcium dodecylbenzenesulfonate 3%

[0032] Sodium hydroxymethylcellulose 0.3%

[0033] Propylene Glycol 3%

[0034] Defoamer 0.2%

[0035] Deionized water balance.

[0036] Preparation:

[0037] The preparation of water emulsion is carried out in the emulsification tank. The processing procedure is as follows: add the original drug of flubenzamine with a concentration >95% to the first-line oil, fully stir and dissolve in a water bath at 50-70°C, and then add castor oil polyoxyethylene ether and calcium dodecylbenzenesulfonate Mix into a uniform oil phase liquid; stir and mix sodium hydroxymethylcellulose, propylene glycol, defoamer and water to form a uniform water phase liquid; under the action of a 2000 rpm high-shear emulsifier, slowly dissolve the The l...

Embodiment 2

[0039] 40% flumetriamine aqueous emulsion, its composition and percentage by weight are:

[0040] Flumetamine 40%

[0041] Ethyl acetate 10%

[0042] Phenylphenol Polyoxyethylene Polyoxypropylene Ether 8%

[0043] Sodium lauryl sulfate 1%

[0044] Xanthan Gum 0.1%

[0045] Glycerol 1%

[0046] Defoamer 0.1%

[0047] Deionized water balance.

[0048] Preparation:

[0049]In the emulsification kettle, add the original drug of flubenzamine with a concentration >95% into ethyl acetate, fully stir and dissolve in a water bath at 50-70°C, and then add phenylethylphenol polyoxyethylene polyoxypropylene ether and dodecyl Alcohol sodium sulfate is mixed into a uniform oil phase liquid; Xanthan gum, glycerin, defoamer and water are stirred and mixed to form a uniform water phase liquid; under the action of a 500 rpm high-shear emulsifier, slowly The water phase liquid is added to the oil phase, or the oil phase is added to the water phase to form a well dispersed water emulsion....

Embodiment 3

[0051] 10% flumetriamine aqueous emulsion, its composition and percentage by weight are:

[0052] Flumetamine 10%

[0053] Xylene 10%

[0054] Alkylaryl polyoxypropylene polyoxyethylene ether 1%

[0055] Modified Starch 3%

[0056] Propylene Glycol 5%

[0057] Defoamer 0.2%

[0058] Deionized water balance.

[0059] Preparation:

[0060] Firstly, put the original drug of flubenzamine with a concentration >95%, xylene and alkylaryl polyoxypropylene polyoxyethylene ether into an emulsification dispersion kettle, and mix to form a uniform oil phase liquid. Stir together the modified starch, propylene glycol, antifoam, and deionized water to form a homogeneous aqueous liquid. Under the action of a high-shear emulsifier at 1000 rpm, slowly add the water phase liquid into the oil phase, or add the oil phase into the water phase to form a well-dispersed water emulsion. After stirring for 5 minutes, a uniform and flowable white emulsion product was obtained, with an average pa...

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Abstract

The invention relates to a flumetralin-containing aqueous emulsion composition and a preparation method thereof, belonging to the technical field of pesticide. The composition comprises the components by weight percent: 10-40% of flumetralin, 1-20% of solvent, 1-20% of surface active agent, 1-5% of antifreeze agent, 0.1-3% of thickening agent, 0.1-0.5% of defoaming agent and balance water. The preparation method comprises the following steps of: adding the flumetralin technical with the concentration of more than 95% into the solvent, fully stirring and dissolving in the water bath at 50-70 DEG C, and then adding the surface active agent to mix the mixed solution into even oil-phase liquid; stirring and mixing the water, the antifreeze agent, the thickening agent and the defoaming agent, and forming uniform aqueous phase liquid; under the action of a high-shear emulsion machine, slowly adding the aqueous phase liquid into the oil phase; or adding the oil phase into the aqueous phase, and forming well-dispersed aqueous emulsion. The invention has extremely low content of organic solvent, is safe in transportation and use, does not pollute the environment, and belongs to an environment-friendly pesticide preparation. The preparation has remarkable inhibition effect for tobacco lateral bud.

Description

technical field [0001] The invention relates to a composition in the technical field of pesticides and a preparation method thereof, in particular to a fluorine-containing benzamine aqueous emulsion composition and a preparation method thereof. technical background [0002] For a long time, in order to solve the problem of environmental pollution caused by the extensive use of chemical pesticides, people have paid more and more attention to the development and use of green pesticide preparations while strengthening the research and development of high-efficiency, low-toxicity, and environment-friendly pesticides at home and abroad. Water-based emulsion is a water-based formulation of pesticides. It is a pesticide preparation formed by dissolving water-insoluble technical liquid or solid in a small amount of organic solvent, and dispersing the obtained liquid in water. Its appearance is opaque white emulsion. Water-emulsions have been studied as early as the early 19th centur...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01N33/18
Inventor 吴明沈国清陆贻通朱福新王夕芳许鑫
Owner SHANGHAI JIAO TONG UNIV
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