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Preparation method of cyhalofop-butyl micro-emulsion

A technology of cyhalofop-ethyl and preparation method, which is applied in the direction of herbicides and algicides, botanical equipment and methods, biocides, etc., and can solve the problems of easy harm to producers, unsuitable soil treatment, poisonous soil or poisonous fertilizer, etc. , to achieve the effect of improving the control effect and the utilization rate of the medicament, the environmental pollution is small, and the pollution is reduced

Inactive Publication Date: 2014-10-29
JIANGSU SANYI SINYI PHARMA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cyhalofop-methyl degrades rapidly in soil and rice fields, and is safe for subsequent crops and rice, but it is not suitable for soil treatment, that is, poisonous soil or poisonous fertilizer
At present, the formulations of cyhalofop-ethyl used for controlling weeds in paddy fields are mainly emulsifiable concentrates. There are many organic solvents, which are easy to cause pollution to the environment. At the same time, during the processing of emulsifiable concentrate, a large amount of organic solvents are used, which is very easy to endanger the producers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the first stirring tank, first add dimethylformamide that accounts for 10% of the total amount, and start stirring at room temperature. The rotating speed of the agitator is 40-50 rpm. 25% ethylene glycol and 10% cyhalofop-ethyl were stirred for 1.5-2 hours. In the high-speed mixing tank, first add water accounting for 43% of the total amount, and start stirring at room temperature. Sulfonate, stir until the lignosulfonate is completely dissolved; adjust the speed of the agitator in the high-speed mixing tank to 210-220 rpm, and slowly dissolve the cyhalofop-ester dissolved in dimethylformamide and ethylene glycol Add it into a high-speed stirring tank, stir and react for 1.2-1.5 hours to get the finished product.

Embodiment 2

[0020] In the first stirring tank, first add dimethylformamide that accounts for 9% of the total amount, and start stirring at room temperature. The rotating speed of the agitator is 40 to 50 rpm. 26% ethylene glycol and 11% cyhalofop-ethyl were stirred and reacted for 1.5-2 hours. In the high-speed mixing tank, first add water accounting for 43% of the total, and start stirring at room temperature. Sulfonate, stir until the lignosulfonate is completely dissolved; adjust the speed of the agitator in the high-speed mixing tank to 210-220 rpm, and slowly dissolve the cyhalofop-ester dissolved in dimethylformamide and ethylene glycol Add it into a high-speed stirring tank, stir and react for 1.2-1.5 hours to get the finished product.

Embodiment 3

[0022] In the first stirring tank, first add dimethylformamide that accounts for 8% of the total amount, and start stirring at room temperature. The rotating speed of the agitator is 40 to 50 rpm. 27% ethylene glycol and 12% cyhalofop-ethyl were stirred for 1.5-2 hours. In the high-speed mixing tank, first add water accounting for 43% of the total amount, and start stirring at room temperature. Sulfonate, stir until the lignosulfonate is completely dissolved; adjust the speed of the agitator in the high-speed mixing tank to 210-220 rpm, and slowly dissolve the cyhalofop-ester dissolved in dimethylformamide and ethylene glycol Add it into a high-speed stirring tank, stir and react for 1.2-1.5 hours to get the finished product.

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PUM

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Abstract

The invention discloses a production method of a cyhalofop-butyl micro-emulsion, and belongs to the field of herbicides. The finished cyhalofop-butyl micro-emulsion is prepared by blending raw materials comprising cyhalofop-butyl, dimethyl formamide, glycol, lignosulfonate and water under specific conditions. The preparation method has the advantages of use of a general apparatus, simple process, mild reaction condition, no emission of pollutant wastes, and good product quality. The cyhalofop-butyl micro-emulsion is mainly used for killing weeds in rice seedling beds, direct seeding fields, transplanting fields and throwing seedling fields, is highly safe to rice, has a special efficacy on moleplant seed and barnyard grass, and can prevent above 30 grassy weeds, such as Paspalum distichum, crab grass, Setaria viridis, Eleusine indica, Alopecurus aequalis and other grassy weeds.

Description

technical field [0001] The invention belongs to the field of herbicides, in particular to a preparation method of cyhalofop-ethyl microemulsion. Background technique [0002] Cyhalofop-methyl is an aryloxyphenoxypropionic acid herbicide, also known as Qianjin, and its chemical name is (R)-2-[4(4-cyano-2-fluorophenoxy)phenoxy]- Butyl propionate has a molecular formula of C20H20FNO4 and a molecular weight of 357.4. The technical appearance is a white crystalline solid with a specific gravity of 1.2375, a boiling point of 363°C, and a melting point of 48-49°C. It is soluble in most organic solvents and insoluble in water. Cyhalofop-ethyl is a systemic conductive herbicide, absorbed by the leaves and sheaths of weeds, conducted by phloem, and accumulated in the meristem area of ​​weeds, resisting acetyl-CoA carboxylase, stopping fatty acid synthesis and cell growth The division cannot be carried out normally, the membrane system and other lipid-containing structures are destroy...

Claims

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Application Information

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IPC IPC(8): A01N25/04A01P13/00A01N39/04
Inventor 不公告发明人
Owner JIANGSU SANYI SINYI PHARMA
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