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Paraquat dichloride-containing water-soluble granular preparation and preparation method thereof

A technology of paraquat dichloride and water-soluble granules, applied in the field of pesticides, can solve problems such as potential safety hazards, incomplete safety problems, and loss of herbicidal activity, so as to reduce poisoning and prevent accidental or intentional ingestion The effect of dangerous, excellent weed control effect

Active Publication Date: 2014-04-16
NANJING REDSUN BIOCHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The 200 g / L and 250 g / L paraquat aqueous solutions currently on the market have certain safety hazards in the actual use process. For example, the diluted solution can be absorbed through the skin when it comes into contact with the skin, and can be absorbed through the skin when it is sprayed and atomized. Toxic by inhalation of respiratory organs
Moreover, accidental or deliberate ingestion can be fatal, unless first aid measures are taken immediately after ingestion, but the damage and loss caused by misuse and misuse are often greater
[0003] In order to solve its safety problem, there are many attempts, including the chelation method, but the safety problem cannot be completely solved. There is also a method to passivate paraquat activity by using clay as a diluent, but in the end it loses its killing effect. Herbicide activity is limited, and foreign patent reports have mixed it with other herbicides and made it into a solid dosage form for use, but it is also limited by various factors, and the overall effect is not ideal after all.

Method used

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  • Paraquat dichloride-containing water-soluble granular preparation and preparation method thereof
  • Paraquat dichloride-containing water-soluble granular preparation and preparation method thereof
  • Paraquat dichloride-containing water-soluble granular preparation and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0029] 75% paraquat dichloride, 5% sodium naphthalenesulfonate formaldehyde condensate, 2% ethylene oxide propylene oxide copolymer (molecular weight 1500-2000, the same below), equivalent to 0.18% of paraquat dichloride mass Triazolpyrimidinone, 0.03% ammonium benzidine, 0.05% indigo, 0.1% pyridine, and the rest is supplemented to 100% with a mixed salt of ammonium sulfate and sodium sulfate (mass ratio 1:1). Then, the mixture was mixed with 5% of water based on the weight of the mixture at room temperature for 5 minutes, and then, the kneaded mixture was formed into particles having a particle diameter of 0.8 to 1.2 mm using a granulator. The granules were then dried at 55°C for 60 minutes in a fluid bed drier. The water-soluble granules thus prepared were used for biological tests and physicochemical tests. When used, it is formulated into an aqueous solution and sprayed on weeds.

Embodiment 2

[0031] 60% paraquat dichloride, 5% sodium octyl naphthalene sulfonate, 2% ethylene oxide propylene oxide copolymer, triazole pyrimidinone equivalent to 0.18% of paraquat dichloride mass, 0.03% saccharin benzyl Ammonium amide, 0.05% Brilliant Blue, 0.1% n-butanol, and the rest is supplemented to 100% with a mixed salt of ammonium sulfate and sodium sulfate (mass ratio 1:1). Then, the mixture was mixed with 10% of water based on the weight of the mixture at room temperature for 20 minutes, and then, the kneaded mixture was formed into particles having a particle diameter of 0.8 to 1.2 mm using a granulator. The granules were then dried at 80° C. for 30 minutes in a fluid bed drier. The water-soluble granules thus prepared were used for biological tests and physicochemical tests. When used, it is formulated into an aqueous solution and sprayed on weeds.

Embodiment 3

[0033] 60% paraquat dichloride, 5% sodium naphthalenesulfonate formaldehyde condensate, 2% ethylene oxide propylene oxide copolymer, triazole pyrimidinone equivalent to 0.18% of paraquat dichloride mass, 0.03% Desammonium benzoate, 0.05% Brilliant Blue, 0.1% pyridine, and the rest is supplemented to 100% with mixed salt of ammonium sulfate and sodium sulfate (mass ratio 1:1). Then, the mixture was mixed with 15% of water based on the weight of the mixture at room temperature for 30 minutes, and then, the kneaded mixture was formed into particles having a particle diameter of 0.8 to 1.2 mm using a granulator. The granules were then dried at 100° C. for 40 minutes in a fluid bed drier. The water-soluble granules thus prepared were used for biological tests and physicochemical tests. When used, it is formulated into an aqueous solution and sprayed on weeds.

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Abstract

The invention belongs to the pesticide field, and discloses a paraquat dichloride-containing water-soluble granular preparation and a preparation method thereof. The paraquat dichloride-containing water-soluble granular preparation comprises: by weight, 0.1 to 95% of paraquat dichloride, 1 to 30% of one or more surfactants, a triazole pyrimidone emetic of which weight is 0.18% of weight of the used paraquat dichloride, 0.001 to 0.1% of at least one bittering agent, 0.05% of at least one pigment, 0.1% of one or more stink agents, and 0 to 98% of a diluent. The paraquat dichloride-containing water-soluble granular preparation can prevent poisoning caused by contact with or intake of a conventional solvable enriched material or wettable powder in use, and poisoning caused by accidental or deliberate intake. The paraquat dichloride-containing water-soluble granular preparation still retains effects after being stored for a long time, and can effectively remove weeds growing in non-cultivated land, or mountain land, woodland, hillside land and the like.

Description

technical field [0001] The invention belongs to the field of pesticides, and relates to water-soluble granules containing paraquat dichloride and a preparation method thereof. Background technique [0002] The 200 g / L and 250 g / L paraquat aqueous solutions currently on the market have certain safety hazards in the actual use process. For example, the diluted solution can be absorbed through the skin when it comes into contact with the skin, and can be absorbed through the skin when it is sprayed and atomized. Respiratory organ inhalation causes poisoning. Moreover, accidental or deliberate ingestion can be fatal, unless first aid measures are taken immediately after ingestion, but the damage and loss caused by misuse and misuse are often greater. [0003] In order to solve its safety problem, there are many attempts, including the chelation method, but the safety problem cannot be completely solved. There is also a method to passivate paraquat activity by using clay as a di...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N25/14A01N43/40A01P13/00
Inventor 杨寿海沈海峰都瑞军高瑞花韦琛鸿
Owner NANJING REDSUN BIOCHEM CO LTD
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