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Preparation process and application of tetrafluoro chlorothalonil microemulsion

A technology of chlorothalonil microemulsion and chlorothalonil tetrafluoride, which is applied in the application, fungicide, biocide and other directions, can solve problems such as the negative impact of the natural environment and the killing of natural enemies, achieve good environmental compatibility, reduce Pollution, the effect of improving environmental compatibility

Inactive Publication Date: 2010-06-16
云天化集团有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Chlorothalonil (2,4,5,6-tetrachloro-1,3-benzenedicarbonitrile) is a protective broad-spectrum, efficient and safe agricultural, forestry and industrial fungicide widely used at present. The fungal disease of crops has good preventive and therapeutic effects, and its long-lasting and stable effect can be used for various diseases of various crops such as wheat, rice, fruit trees, vegetables, peanuts, tea, rubber, forests, etc. It is used for the prevention and treatment of silkworm yeast mildew and stiff disease and industrial mold prevention in tanning, etc., but as an organochlorine pesticide, its large-scale use will bring great negative impacts on humans, livestock and the natural environment, and long-term use will also cause kill natural enemies

Method used

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  • Preparation process and application of tetrafluoro chlorothalonil microemulsion
  • Preparation process and application of tetrafluoro chlorothalonil microemulsion
  • Preparation process and application of tetrafluoro chlorothalonil microemulsion

Examples

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Effect test

example 1

[0023] Example 1, fully stir 5g chlorothalonil and 7g dimethylformamide to make it evenly mixed, add 5.6g urea and stir evenly, then add 12g benzylphenol polyoxyethylene ether and 18g laurocapram in turn, fully After stirring, add 52.4g of water and stir vigorously and heat to 52°C until the mixture becomes transparent, then cool to room temperature to prepare 5% chlorothalonil microemulsion.

example 2

[0024] Example 2, fully stir 14.8g chlorothalonil and 26g isopropanol to make it evenly mixed, add 4g potassium dihydrogen phosphate and stir evenly, then add 7.8g phenylethylphenol polyoxyethylene ether phosphate and 11.1 g of laurocapram, after fully stirring, add 36.3g of water and stir vigorously and heat to 49°C until the mixture becomes transparent, then cool to room temperature to prepare 14.8% chlorothalonil microemulsion.

example 3

[0025] Example 3, fully stir the mixture of 28.8g chlorothalonil, 19g dimethyl sulfoxide and ethyl acetate to make it evenly mixed, add 9g sodium sorbate and stir evenly, then add 12g dodecylbenzenesulfonic acid in turn Sodium and 7.8g of laurocapram, after fully stirring, add 23.4g of water and stir vigorously and heat to 55°C until the mixture becomes transparent, then cool to room temperature to prepare 28.8% chlorothalonil microemulsion.

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PUM

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Abstract

The invention belongs to the pesticide and fungicide fields, in particular relates to a preparation method and application of tetrafluoro chlorothalonil (2,4,5,6-tetrafluoro-1,3-dicyanobenzene) microemulsion. The tetrafluoro chlorothalonil microemulsion with good physical and chemical stability and high dispersibility can be prepared by screening from various emulsifiers, cosolvents, penetrants and stabilizers. The microemulsion is characterized in that the tetrafluoro chlorothalonil microemulsion comprises the following components: 5-50% of tetrafluoro chlorothalonil, 7-27% of emulsifier, 5-18% of penetrant, 5-26% of cosolvent and the balance water. The fungicide form of the invention is microemulsion using water as solvent so as to avoid the unsafety of production, operation and storage caused by largely used organic solvent and is characterized by wide anti-fungal spectrum, low dosage and environmental friend; and the microemulsion has obvious drug effect for controlling Pyriculariagrisea, Alternaria alternate, Pellicularia sasakii and Botrytis cintrea.

Description

technical field [0001] The invention belongs to the category of the preparation process of pesticide fungicides, and relates to a preparation process of a chlorothalonil bactericide dosage form. The invention also relates to the use of such fungicides. Background technique [0002] Chlorothalonil (2,4,5,6-tetrachloro-1,3-benzenedicarbonitrile) is a protective broad-spectrum, efficient and safe agricultural, forestry and industrial fungicide widely used at present. The fungal disease of crops has good preventive and therapeutic effects, and its long-lasting and stable effect can be used for various diseases of various crops such as wheat, rice, fruit trees, vegetables, peanuts, tea, rubber, forests, etc. It is used for the prevention and treatment of silkworm yeast mildew and stiff disease and industrial mold prevention in tanning, etc., but as an organochlorine pesticide, its large-scale use will bring great negative impacts on humans, livestock and the natural environment,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N37/34A01N25/04A01P3/00
Inventor 林军叶敏浦恩堂严胜骄夏咸松刘琳陈育兰
Owner 云天化集团有限责任公司
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