Water-dispersion granule of herbicide HNPC-C9908 and preparation method

A technology of methylthiosulfuron and dispersible granules, applied in herbicides and algaecides, botanical equipment and methods, biocides, etc., can solve the problems such as no research report on methylthiosulfuron water dispersible granules. , to achieve the effect of excellent control effect, fast disintegration speed and high suspension rate

Inactive Publication Date: 2009-03-04
国家农药创制工程技术研究中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There is no research report on thiosulfuron-methyl water-dispersible granules

Method used

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  • Water-dispersion granule of herbicide HNPC-C9908 and preparation method
  • Water-dispersion granule of herbicide HNPC-C9908 and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Weigh 76.6 grams of 98% thiosulfuron-methyl, 6 grams of alkylnaphthalenesulfonic acid polycondensate, 4 grams of alkylnaphthalenesulfonate, 8 grams of ammonium sulfate, 0.5 grams of polyvinyl alcohol, diatomaceous earth to make up to 100 grams , after mixing, pulverize by jet mill, extrude and granulate to obtain 75% thiosulfuron-methyl water-dispersible granules. The obtained product is taupe granules, the wetting time is 26 seconds, the disintegration time is 46 seconds, and the suspension rate is 92.7%. The sample is stored at 54° C. for 14 days, the decomposition rate is 2.03%, and the storage suspension rate is 91.2%.

Embodiment 2

[0021] Weigh 51.1 grams of 98% thiosulfuron-methyl, 7 grams of sodium lignosulfonate, 3 grams of sodium dodecylbenzenesulfonate, 10 grams of sodium laurate, 2 grams of carboxymethylcellulose, and make up to 100 grams of bentonite. grams, after mixing, pulverize by jet mill, and granulate by boiling to obtain 50% thiosulfuron-methyl water-dispersible granules. The obtained product is light brown round particles, the wetting time is 49 seconds, the disintegration time is 31 seconds, and the suspension rate is 90.3%. The sample is stored at 54°C for 14 days, the decomposition rate is 3.11%, and the storage suspension rate is 89.7%. .

Embodiment 3

[0023] Weigh 11.1 grams of 98% thiosulfuron-methyl, 5 grams of alkylphenol polyoxyethylene formaldehyde condensation product sulfate, 6 grams of fatty alcohol polyoxyethylene ether, 30 grams of sodium bicarbonate, 2 grams of polyethylene glycol, Attapulgite is added to 100 grams, after mixing, it is pulverized by a jet mill, extruded, dried and granulated to obtain 50% thiosulfuron-methyl water-dispersible granules. The obtained product is off-white round particles, the wetting time is 49 seconds, the disintegration time is 41 seconds, and the suspension rate is 93.1%. The sample is stored at 54° C. for 14 days, the decomposition rate is 3.4%, and the storage suspension rate is 90.7%.

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Abstract

The invention discloses a water dispersible granule of a sulfonylurea herbicide, that is, 2-(4- methoxyl group -6- methylthiouracil -2-methyl) carbamoyl amio sulfonyl phenyl methyl formate, and a preparation method thereof. The invention has the advantages of good dispersivity, good wettability, high suspension percentage,high disintegration speed, easy package, easy storage, no pollution in production and use, improvement on the working environment of workers, and the like. The invention can be applied in a wheat field. Recommended dosage is 2-4g / mu. The prevention effect can reach more than 90 percent for broadleaved herbs in the field, such as shepherd's-purse, descurainia Sophia, and the like. Therefore, as a herbicide, the water dispersible granule has the advantages of excellent control efficiency, high efficiency, little poison, and environment-friendliness.

Description

technical field [0001] The invention relates to a water-dispersible granule of the herbicide thiosulfuron-methyl and a preparation method thereof. Background technique [0002] Methiosulfuron-methyl, belongs to sulfonylureas herbicide (sulfonylureas herbicide), chemical name 2-(4-methoxy-6-methylthiopyrimidin-2-yl)carbamoylsulfamoylbenzoic acid methyl ester, It is a new type of sulfonylurea herbicide containing alkylthio group invented by Hunan Research Institute of Chemical Industry on May 11, 2000. The patent number is ZL00113423.X. The chemical structure formula is: [0003] [0004] Thisulfuron-methyl technical is a white solid with a melting point of 184-186°C. It is mainly used for the control of various broad-leaved weeds and some gramineous weeds in wheat fields, and its control effect is excellent. Since the invention of the herbicide thiosulfuron-methyl, the inventor has carried out a lot of formulation research, and has developed emulsifiable concentrate and w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N47/34A01N25/12A01P13/00
Inventor 聂思桥陈力华李涛陈九星雷满香刘义珂任竞梁骥
Owner 国家农药创制工程技术研究中心
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