Water dispersible granules containing tebuconazole and preparation method thereof

A technology containing tebuconazole and disperse particles, which is applied in botany equipment and methods, biocides, fungicides, etc., can solve the problems of large dust, unsafe operators, environmental pollution, etc., and achieve low environmental pollution and convenient transportation , the effect of improving safety

Inactive Publication Date: 2013-02-13
上海沪联生物药业(夏邑)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of processed dosage forms, the disadvantages of traditional dosage forms become more prominent. The main problems of wettable powders and powders are large dust, which is unsafe for operators and seriously pollutes the environment.
The emulsifiable concentrate mainly contains a large amount of organic solvents such as xylene and toluene, which has caused serious pollution to the environment.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The weight percentages of each component in the formula are as follows: 55% of the original drug of tebuconazole with a purity of 98%, 5% of the wetting agent alkylphenol ethoxylate, 2% of the dispersing agent polycarboxylate, and 1% of the disintegrating agent urea , stabilizer disodium hydrogen phosphate 1%, organosilicon synergist 3%, binder polyethylene glycol 0.1%, carrier bentonite 32.9%, after mixing, add a micro-jet mill for ultra-fine grinding, and the resulting ultra-fine powder Put it into a fluidized bed granulator after secondary mixing; the binder polyethylene glycol is made into an aqueous solution, and the aqueous solution containing the binder is used for granulation and drying in a fluidized bed granulation dryer at 50-70°C. After drying and sieving, the water-dispersible granule of the pesticide variety is obtained.

[0022] After inspection, the prepared water-dispersible granules have a content of tebuconazole of 53.9%, a moisture content of 1.3%...

Embodiment 2

[0024] The weight percentages of each component in the formula are as follows: 60% of the original powder of tebuconazole with a purity of 98%, 3% of the wetting agent naphthalene sulfonate, 5% of the dispersant polycarboxylate, 2% of the disintegrating agent ammonium sulfate, Binder magnesium aluminum silicate 2%, stabilizer sodium benzoate 1%, organosilicon synergist 3%, carrier light calcium carbonate 24%, after mixing, add a micro-jet mill for ultra-fine grinding, and the resulting ultra-fine powder Put it into the fluidized bed granulator after the secondary mixing, the binder magnesium aluminum silicate is made into an aqueous solution, and the aqueous solution containing the binder is used for granulation and drying in a fluidized bed granulation dryer at 50-70°C After drying and sieving, the water-dispersible granule of the pesticide variety is obtained.

[0025] After inspection, the prepared water dispersible granules have tebuconazole content of 58.5%, water cont...

Embodiment 3

[0027] The weight percentages of each component in the formula are as follows: 65% of the original powder of tebuconazole with a purity of 98%, 4% of the wetting agent fatty alcohol ethoxylate, 5% of the dispersant polyarylphenol ethoxylated phosphate, Disintegrant calcium chloride 5%, binder starch 2%, stabilizer sodium hydroxide 1%, organosilicon synergist 3%, carrier anhydrous sodium carbonate 15%, after mixing, add micro airflow pulverizer ultrafine Pulverize, mix the obtained superfine powder for the second time and put it into a fluidized bed granulator. The binder starch is made into an aqueous solution, and the aqueous solution containing the binder is used in a fluidized bed granulation dryer at 50-70°C. Granulating and drying are carried out, and the water-dispersible granule of the pesticide variety is obtained after sieving.

[0028] After inspection, the prepared water-dispersible granules have tebuconazole content of 63.7%, moisture content of 1.6%, pH value o...

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PUM

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Abstract

The invention relates to water dispersible granules containing tebuconazole. The water dispersible granules mainly comprise a tebuconazole active compound, a disintegrating agent, a dispersing agent, a wetting agent, a binding agent, a stabilizing agent, a synergistic agent and a carrier. For the obtained water dispersible granules, the tebuconazole recovery rate is more than 98 percent, the content of active components is high, the disintegrating speed is high, the dispersity is good, the storage performance is stable, the bactericidal effect is high and the safety is good, the using method is similar to that of wettable powder, and the water dispersible granules can be directly mixed with water for spraying. The obtained water dispersible granules do not have a solvent and dust, cause little environmental pollution, are safe for operators, high in effective component, small in size and convenient to pack, store and transport, can be quickly disintegrated in water, have high dispersity and excellent suspension property, can form a uniform suspension with the suspensibility of 90 percent through little stirring, and have high redispersibility; and the suspension which is not used up can re-form a uniform suspension by only re-stirring when used again, and the drug effect is not influenced.

Description

technical field [0001] The invention relates to an agricultural fungicide, in particular to an insecticide whose active ingredient is tebuconazole and whose dosage form is water-dispersible granules and a preparation method thereof. Background technique [0002] At present, there are many agricultural fungicides, and tebuconazole is one of them. Tebuconazole has excellent biological activity, low dosage, strong systemic property, and wide application range. , Sclerotinia, and Septoria spp. can effectively prevent and control diseases. It can also be used for seed treatment and foliar spray. Because of its systemic effect, it can effectively prevent and control pathogenic bacteria adsorbed on the surface and inside of seeds. It is widely used in dryland crops such as wheat, sorghum, corn, etc. to prevent and control certain seed-borne and soil-borne diseases, and to prevent and control smut. germs. At present, it is mainly used to control diseases of cereals and peanuts, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/14A01N43/653A01P3/00
Inventor 司贤良
Owner 上海沪联生物药业(夏邑)股份有限公司
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