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Preparation method of aminopyralid soluble granules

A technology of pyridoxine and pyridoxine original powder, which is applied in the field of preparation of pyridoxine soluble granules, can solve the problems of high equipment requirements, high cost, many unsafe factors, etc., and achieves environmental friendliness, The effect of increasing production capacity and saving energy costs

Inactive Publication Date: 2021-04-06
SHANDONG SHENGBANG LUNAN PESTICIDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Its disadvantages: the above-mentioned process needs to be synthesized through aminopyralidate, and only this step has problems such as complex process, high equipment requirements, high cost, and many unsafe factors

Method used

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  • Preparation method of aminopyralid soluble granules

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preparation example Construction

[0010] A preparation method of aminopyralid soluble granules, comprising the following steps:

[0011] (1) Put aminopyralid acid powder and alkaline substances into the kneader at a molar ratio of 1:1-1.1, mix for 15-30 minutes at 25°C, raise the temperature and keep it at 40-80°C, then add an appropriate amount of water, add The amount of water is 6-13% of the mass of aminopyralid acid raw powder, and the reaction time is 60-120min.

[0012] (2) After the reaction is completed, put the wetting and dispersing agent, excipient and carrier into the above-mentioned mixed materials, continue to stir and mix for 10-30 minutes, then send it to the granulator for granulation, and then dry it to obtain aminopyridine Acid soluble granules.

[0013] In the above reaction step (1), through the action of extrusion, stirring and mixing by the kneader, an appropriate amount of water is added to initiate the reaction, so that the reactants are more evenly contacted and the reaction is more ...

example 1

[0027] Example 1: Preparation method of ammonium aminopyralid acid soluble granules: put 2000g of aminopyralid acid original powder (purity 95%) and 762g ammonium bicarbonate (purity 99%) into a kneader with a capacity of 5L , under normal temperature and pressure conditions, pre-mixed for 20 minutes, then raised the temperature to 45°C, added 200g of water at a constant speed, stirred and kneaded at this temperature, and took samples for 90 minutes to test the reaction of the materials. The test showed that the original aminopyralid acid insoluble in water The drug is completely converted into water-soluble ammonium salt, then add 40g of excipient PEG6000, 100g of EO-PO block copolymer, 300g of ammonium sulfate and continue kneading for 30 minutes. Dried to obtain 82% aminopyralid ammonium salt soluble granules.

example 2

[0028] Example 2: Preparation method of alanopyral acid potassium salt soluble granule: Put 2000g of alanopyral acid original powder (95% purity) and 964g potassium bicarbonate (99% purity) into a kneader with a capacity of 5L , under normal temperature and pressure conditions, pre-mixed for 20 minutes, then raised the temperature to 45°C, then added 250g of water at a constant speed, kneaded at this temperature, took a sample for 90 minutes to test the reaction of the material, and the test showed that the original aminopyralid acid was insoluble in water The drug is completely converted into water-soluble potassium salt, then add 150g excipient PEG6000, 100g maleic anhydride-polyacrylic acid copolymer, 50g sodium lauryl sulfate, 230g urea and continue kneading for 30 minutes, then send the material into the The granulator was used for granulation and drying to obtain 88.8% soluble granules of aminopyralid potassium salt.

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Abstract

The invention relates to a preparation method of aminopyralid salt soluble granules, which mainly comprises the following steps: (1) adding aminopyralid raw powder and an alkaline substance into a kneader according to a molar ratio of 1: 1-1.1, mixing at 25 DEG C for 15 minutes, heating, keeping the temperature at 40-80 DEG C, adding water, and continuing stirring and kneading to react for 60-120 minutes; and (2) after the reaction is finished, adding an excipient, a wetting dispersant and a filler into the mixed material, continuously kneading for 10-30 minutes, feeding into a granulator for extrusion granulation, and drying to obtain the aminopyralid soluble granules. The method has the advantages that materials are always kept in a solid state in the whole production process, subsequent crystallization and filtration procedures are not needed, three wastes are avoided, and the production process is safe, economic, environment-friendly and low in environmental pollution.

Description

technical field [0001] The present invention relates to a preparation method of aminopyralid acid soluble granule which keeps solid state throughout the whole production process, does not need follow-up crystallization and filtration process, does not produce three wastes, has safe production process, is economical and environmentally friendly, and has little environmental pollution. Herbicide manufacturing field. Background technique [0002] Aminopyralic acid, chemical name 4-amino-3,5,6-trichloropyridinecarboxylic acid, is a new type of pyridinecarboxylic acid herbicide developed by Tao Nongke, widely used in mountains, grasslands, planting land and non-arable land weed control. Ampicillin is a synthetic hormone-type herbicide, which can be quickly absorbed by plant stems, leaves and roots. In sensitive plants, it can induce plants to produce a partial response, resulting in plant growth stagnation and rapid necrosis. It has good systemic properties. The product has the...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01N25/14A01P13/00C07D213/803
CPCA01N25/14A01N43/40C07D213/803
Inventor 宋国云钟国宁杨娇娇
Owner SHANDONG SHENGBANG LUNAN PESTICIDE