Water-dispersible granule containing paraquat dichloride and its preparing method

A paraquat dichloride, dispersive technology, applied in the fields of botanical equipment and methods, preservation of human or animal bodies, animal husbandry, etc., can solve the cost of poisoning paraquat, cohesion or precipitation of paraquat and anionic surfactants , poor performance, etc.

Inactive Publication Date: 2002-10-23
DONGBU FARM HANNONG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When anionic surfactants are added to increase the stickiness between leaves and paraquat, there may be problems with cohesion or precipitation between paraquat and anionic surfactants
However, the water soluble granules are less effective than soluble concentrates and cost m

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 30% by weight of 42.5% concentration of paraquat, 5% by weight of sodium naphthalenesulfonate formaldehyde condensate, 2% by weight of ethylene oxide propylene oxide copolymer, 5% by weight of octyl naphthalenesulfonate, 5% by weight of ammonium sulfate and the remaining pyrophyllite mixture. The mixture was then mixed with 8% by weight of water of the mixture at room temperature for 30 minutes. Next, the kneaded mixture was formed into granules using a granulator. Then, the granules were dried under reduced pressure at 120° C. for 30 minutes in a fluidized bed drier. The water-dispersible granules thus prepared were used for biological tests and physicochemical tests. Example 2

Embodiment 2

[0025] 30% by weight of 42.5% concentration of paraquat, 5% by weight of sodium octyl naphthalene sulfonate, 2% by weight of ethylene oxide propylene oxide copolymer, 5% by weight of octyl phenylsulfate, 5% by weight of sodium nitrate and the remaining Pyrophyllite mixed. Carry out the step of embodiment 1 afterwards. Example 3

Embodiment 3

[0026] 40% by weight of 42.5% concentration of paraquat, 5% by weight of sodium naphthalenesulfonate formaldehyde condensate, 2% by weight of ethylene oxide propylene oxide copolymer, 5% by weight of octyl naphthalenesulfonate, 5% by weight of ammonium sulfate and the remaining pyrophyllite mixture. Carry out the step of embodiment 1 afterwards. Example 4

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PUM

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Abstract

The present invention relates to a water-dispersible particle containing paraquat dichloride and a preparation method thereof. The paraquat, an active ingredient of a non-selective herbicide, is strongly adsorbed on minerals in the soil, especially supplements such as clay, bentonite, talc, pyrophyllite, montmorillonite, etc. , so it is generally known to be inactive. Paraquat is converted into a water dispersible granule type so that the dispersible granule type can be safe for humans and has excellent agrochemical effects compared to other formulation types such as soluble concentrate type or wettable powder type. The agrochemical composition of the present invention is prepared by mixing and kneading 5-50% by weight of paraquat, 5-30% by weight of surfactant, 1-20% by weight of rupture accelerator and the remainder of the extender, and the kneaded mixture is formed into granules , and these granules are dried.

Description

technical field [0001] The present invention relates to a water-dispersible granule containing paraquat dichloride (hereinafter referred to as "paraquat") and a preparation method thereof. Paraquat, an active ingredient of a non-selective herbicide, is generally known to exhibit no herbicidal activity due to its strong adsorption to minerals in the soil. More specifically, the present invention relates to a water-dispersible granule containing paraquat and a preparation method thereof, comprising 5-50% by weight of paraquat, 5-30% by weight of a surfactant, and 1-20% by weight of a rupture accelerator The remaining supplement is mixed and kneaded, the kneaded mixture is formed into granules using a granulator, and these granules are dried. Background technique [0002] Soluble concentrates of paraquat currently on the market at a concentration of 24.5% can cause skin damage and can be absorbed through the skin when it comes into contact with the skin. ...

Claims

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Application Information

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IPC IPC(8): A01N25/14A01N43/40
CPCA01N43/40A01N25/14A01N2300/00
Inventor 郑奉真金承镐丁光镇安秉祐权五砚俞洪在权容雄
Owner DONGBU FARM HANNONG
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