Clopyralid salt active compound, preparation method for water-soluble granules of clopyralid salt active compound and applications

A technology of dichloropyridine salt and dichloropyridine acid, applied in the field of pesticide chemical industry, can solve the problems of easy dusting of soluble powder, low utilization rate of water-dispersible granules, environmental and human harm, etc., and meet the requirements of low cost and equipment Low, good safety and environmental protection effect

Active Publication Date: 2015-12-23
SHANDONG WEIFANG RAINBOW CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among the above dosage forms, water and dispersible oil suspensions belong to the dosage forms containing solvents. The water contains a lot of water, which causes a lot of inconvenience to packaging, transportation and storage, and at the same time increases the cost. The dispersible oil suspension contains a large amount of

Method used

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  • Clopyralid salt active compound, preparation method for water-soluble granules of clopyralid salt active compound and applications
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  • Clopyralid salt active compound, preparation method for water-soluble granules of clopyralid salt active compound and applications

Examples

Experimental program
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Effect test

Embodiment 1 2

[0031] The preparation of embodiment 1 clopyralid potassium salt

[0032] In a 1L kneader with a heating device, put 400g of clopyralid (purity 95%) and 202g potassium bicarbonate (purity 99%) together, mix and stir under normal temperature and pressure at a speed of 60rpm 10 minutes, then heat up to 60°C, control the stirring speed to 40rpm, continue mixing at this temperature and stirring speed, detect the reaction degree of the material in about 1 hour, it shows that the reaction system has changed from the original drug of clopyralid which is insoluble in water to complete The clopyralid potassium salt technical drug dissolved in water, the prepared clopyralid potassium salt technical drug was dried at 80° C. to obtain 475 g of dry product, the analyzed content was 95.8%, and the yield was 99.8%.

Embodiment 2 2

[0033] The preparation of embodiment 2 clopyralid potassium salt

[0034] In a 1L kneader with a heating device, put 430g of clopyralid (purity 95%) and 121g of potassium hydroxide (purity 99%) together, mix and stir at 80rpm under normal temperature and pressure conditions After 15 minutes, the temperature was raised to 70°C, the stirring speed was controlled to 40rpm, and the mixing was continued at this temperature and stirring speed, and the degree of reaction of the materials was detected in about 1 hour, which showed that the reaction system changed from the original drug of clopyralid which was insoluble in water to complete The clopyralid potassium salt technical drug dissolved in water, the prepared clopyralid potassium salt technical drug was dried at 85° C. to obtain 510 g of dry product, the analyzed content was 95.7%, and the yield was 99.9%.

Embodiment 3 2

[0035] The preparation of embodiment 3 clopyralid potassium salt

[0036] In a 1L kneader with a heating device, 450g of clopyralid (purity 95%) and 158g of potassium carbonate (purity 99%) were put in together, and mixed and stirred at a speed of 70rpm for 12 Minutes, then heat up to 60°C, control the stirring speed to 50rpm, continue mixing at this temperature and stirring speed, detect the reaction degree of the materials in about 1 hour, it shows that the reaction system changes from the original drug of clopyralid which is insoluble in water to completely soluble The clopyralid potassium salt technical drug in water, the prepared clopyralid potassium salt technical drug was dried at 80° C. to obtain 535 g of dry product, the analyzed content was 95.5%, and the yield was 99.8%.

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Abstract

The invention discloses a clopyralid salt active compound, a preparation method for water-soluble granules of the clopyralid salt active compound and applications. The active compound is obtained from solid clopyralid and solid alkaline substances through direct reaction. During the preparation process, materials keep in a solid state, crystallisation process of products is not needed, synthetic steps are simplified, the yield is raised, energy consumption is reduced, no three wastes are discharged, no dust is generated, safety and environmental protection properties are good, and pollution to the environment is low. Through adjustment of selection and matching of auxiliary materials, the foaming property of the prepared clopyralid water-soluble granules is lowered, the disintegration speed and the solubility are raised, there is no deposition in the solution after dissolution, and when the water-soluble granules are compared with an aqueous solution, packaging, transporting and storage are convenient, the cost is low and application is convenient.

Description

technical field [0001] The present invention relates to a preparation method of the original drug of clopyralid salt, and also relates to a method for preparing water-soluble granules from the original drug of clopyralid salt prepared by the method and the obtained water-soluble granules, which belong to the pesticide chemical technology field. Background technique [0002] Clopyralid, chemical name 3,6-dichloropyridine-2-carboxylic acid, is a herbicide developed by Dow Chemical Company of the United States in 1977. Its pure product is colorless crystal and is a synthetic plant growth hormone . Its chemical structure is similar to many natural plant growth hormones, but it has better persistence in plant tissues. It is mainly absorbed through plant roots and leaves and then conducted in plants, so its conduction performance is strong. After application to weeds, it is absorbed by the leaves or roots of the plant, moves up and down the plant body and is quickly transmitted ...

Claims

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Application Information

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IPC IPC(8): C07D213/79A01N43/40A01N25/14A01P13/00
CPCA01N43/40C07D213/79
Inventor 孙国庆侯永生吴勇高远镇陈帅
Owner SHANDONG WEIFANG RAINBOW CHEM
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