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Tablet containing paraquat dichloride and its preparation method

A technology of paraquat dichloride and tablets, applied in the field of pesticides, can solve problems such as incomplete safety problems, unsatisfactory overall effects, and potential safety hazards, and achieve excellent weeding effects, excellent agricultural chemical effects, and enhanced safety Effect

Inactive Publication Date: 2012-03-07
NANJING REDSUN
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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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  • Tablet containing paraquat dichloride and its preparation method
  • Tablet containing paraquat dichloride and its preparation method
  • Tablet containing paraquat dichloride and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0031] A tablet containing paraquat dichloride, containing 75% paraquat dichloride, 5% sodium naphthalenesulfonate formaldehyde condensate, 2% ethylene oxide propylene oxide copolymer (molecular weight 1500-2000, the same below ), 2% tartaric acid, 3% sodium carbonate, 0.03% desodium ammonium benzoate, triazole pyrimidinone equivalent to 0.18% of paraquat dichloride quality, 0.05% brilliant blue, 0.1% pyridine, and the rest is supplemented with sodium benzoate to 100%.

[0032] Mix and pulverize the above-mentioned other components except the active ingredient paraquat dichloride, after pulverization, fully mix it with the original powder of the active ingredient paraquat dichloride, and use the mixture at 23-25°C A tablet press compresses the mixture into tablets. Then, the tablets were dried at 60° C. for 60 minutes in a fluid bed dryer. The tablets thus prepared were used for biological tests and physicochemical tests. When used, it is dissolved and diluted with water to...

Embodiment 2

[0034] A tablet containing paraquat dichloride containing 60% paraquat dichloride, 5% sodium octyl naphthalene sulfonate, 2% ethylene oxide propylene oxide copolymer, 5% sodium carbonate, 5% lemon Acid, 5% ammonium sulfate, 0.03% saccharin benzyl ammonium amide, triazole pyrimidinone equivalent to 0.18% of the mass of paraquat dichloride, 0.05% brilliant blue, 0.1% n-butanol, the rest is made up to 100 with sodium silicate %.

[0035] Mix and pulverize the above-mentioned other components except the active ingredient paraquat dichloride, after pulverization, fully mix it with the original powder of the active ingredient paraquat dichloride, and use the mixture at 23-25°C A tablet press compresses the mixture into tablets. Then, the tablets were dried at 100° C. for 30 minutes in a fluidized bed dryer. The tablets thus prepared were used for biological tests and physicochemical tests. When used, it is dissolved and diluted with water to a certain concentration, and then spra...

Embodiment 3

[0037] A tablet containing paraquat dichloride, containing 60% paraquat dichloride, 5% sodium naphthalenesulfonate formaldehyde condensate, 2% ethylene oxide propylene oxide copolymer, 5% sodium carbonate, 5% Tartaric acid, 0.03% desodium ammonium benzoate, triazolopyrimidinone equivalent to 0.18% of paraquat dichloride by mass, 0.05% Brilliant Blue, 0.1% pyridine, and make up the rest to 100% with sodium benzoate.

[0038] Mix and pulverize the above-mentioned other components except the active ingredient paraquat dichloride, after pulverization, fully mix it with the original powder of the active ingredient paraquat dichloride, and use the mixture at 23-25°C A tablet press compresses the mixture into tablets. The tablets were then dried at 70° C. for 40 minutes in a fluid bed dryer. The tablets thus prepared were used for biological tests and physicochemical tests. When used, it is dissolved and diluted with water to a certain concentration, and then sprayed.

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Abstract

The invention belongs to the pesticide field, and discloses a tablet containing paraquat dichloride and its preparation method. The paraquat dichloride comprises the following ingredients: 0.1-95wt% of paraquat dichloride, 1-30wt% of surfactant, 1-20% of disintegrating agent, emetic triazole pyrimidone which is equal to 0.18wt% of paraquat dichloride, 1-20wt% of degradation assistant, 0.001-0.1wt% of bittering agent, 0.05wt% of pigment, 0.1wt% of odor agent and 0-97wt% of diluent. The preparation method of the tablet comprises the following steps: mixing the ingredients, pressing a mixture into sheets by a tablet press machine and drying the tablets. The tablet containing paraquat dichloride is capable of raising the security on human body, compared with other preparation types such as water aqua or powdery dosage form, the tablet containing paraquat dichloride has excellent agricultural and chemical effects.

Description

technical field [0001] The invention belongs to the field of pesticides, and relates to a tablet 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 diluent, but in ...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01N25/34A01P13/00
Inventor 杨寿海齐武沈海峰王述刚张志宏
Owner NANJING REDSUN
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