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Preparation method of suspending agent containing pyraclostrobin and copper abietate

A technology of pyraclostrobin and copper rosinate, which is applied in the preparation of copper rosinate compound suspending agent and the preparation field of pyraclostrobin and copper rosinate suspending agent, which can solve the problem of easy creaming and cost increase , environmental pollution and other issues, to achieve high formulation stability and effect, simplify the production process, and reduce production costs

Inactive Publication Date: 2017-12-01
GUANGDONG GEOLONG BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation methods disclosed in the examples all adopt the traditional preparation process of pesticide formulations, that is, purchase copper rosinate and pyraclostrobin, and then mix dispersant, wetting agent, thickener, antifreeze, etc. Auxiliaries, and then through the sand milling process for the preparation of related formulations, and the emulsifiable concentrates, microemulsions, and water-emulsions disclosed by them all use a large amount of organic solvents, which not only pollute the environment during production and use, but also cause Causes an increase in its production cost, and at the same time increases its risk of phytotoxicity to crops during use
[0013] In the actual development process, the inventors found that: pyraclostrobin contains a variety of crystal structures, of which only one crystal structure (relatively high melting point) is suitable for the preparation of suspensions. The structure and content of the original drug of the ester have high requirements. If the selected original drug is not suitable, the phenomenon of creaming will easily occur during the sanding process, and the prepared suspension concentrate samples often have quality problems such as oil separation during thermal storage, which affects the use of the product. Effect and sales

Method used

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  • Preparation method of suspending agent containing pyraclostrobin and copper abietate
  • Preparation method of suspending agent containing pyraclostrobin and copper abietate
  • Preparation method of suspending agent containing pyraclostrobin and copper abietate

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A kind of preparation method of pyraclostrobin and copper rosinate suspending agent, its steps are as follows:

[0045] (1) preparation of potassium hydroxide solution: get 40Kg potassium hydroxide and be dissolved in 400Kg water, obtain potassium hydroxide solution;

[0046] (2) Preparation of saponification solution: add 210Kg rosin to the potassium hydroxide solution obtained in step (1), and heat to 90° C., react for 60 minutes, until the reaction is complete, to obtain saponification solution;

[0047] (3) Melting of pyraclostrobin: Add 20.5Kg of pyraclostrobin technical substance (crystal form II, content 97.5%, melting point 63.7-64.1°C) to the saponified solution obtained in step (2), and keep the temperature At 90°C, the pyraclostrobin raw drug was melted, then 3Kg of commercially available polyvinyl alcohol was added as a stabilizer, and stirred for 30 minutes to obtain a stable pyraclostrobin soap mixture;

[0048] (4) Preparation of copper sulfate solution: 1...

Embodiment 1

[0053] According to the proportion of the formula, a sufficient amount of pyraclostrobin technical substance (crystal form II, content 97.5%, melting point 63.7-64.1°C) and copper rosinate technical substance (content 65%), wetting agent, dispersant, Thickener, antifreeze, etc. are mixed with water, subjected to high-speed shearing, wet sanding, and finally homogeneously filtered to obtain the product. The main equipment is batching kettle, colloid mill or homogeneous mixer, sand mill.

[0054] Formula: Accurately weigh 20.5Kg of commercially available pyraclostrobin (crystal form II, content 97.5%, melting point 63.7-64.1°C), 307.7Kg of commercially available copper rosinate (content 65%); dispersant is 40Kg commercially available Castor oil polyoxyethylene ether is sold; the wetting agent is 10Kg commercially available alkylnaphthalene sulfonate polycondensate; the thickener is 1Kg commercially available xanthan gum; the antifreeze is 30Kg commercially available ethylene gly...

Embodiment 2

[0064] A kind of preparation method of pyraclostrobin and copper rosinate suspending agent, its steps are as follows:

[0065] (1) preparation of potassium hydroxide solution: get 20Kg sodium hydroxide and be dissolved in 400Kg water, obtain sodium hydroxide solution;

[0066] (2) Preparation of saponification solution: add 105Kg rosin to the potassium hydroxide solution obtained in step (1), and heat to 90° C., react for 60 minutes, until the reaction is complete, to obtain saponification solution;

[0067] (3) Melting of pyraclostrobin: Add 208.4Kg pyraclostrobin technical material (crystal form I, content 96%, melting point 64.6-65.2°C) to the saponified solution obtained in step (2), and keep the temperature At 90°C, the pyraclostrobin raw drug was melted, then 1Kg of commercially available polyvinyl alcohol and 2Kg of commercially available polyacrylic acid resin were added as stabilizers, and stirred for 30 minutes to obtain a stable pyraclostrobin soap mixture;

[0068...

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Abstract

The invention discloses a preparation method of a suspending agent containing pyraclostrobin and copper abietate, belonging to the technical field of agricultural sterilizing agents. The preparation method comprises the steps of synthesizing copper abietate in a water phase in one step, adding a pyraclostrobin crude drug during the synthesis, and preparing the suspending agent containing pyraclostrobin and copper abietate by virtue of a sand milling process. Being different suspending agent compounding processes in the prior art, the preparation method has the advantages that copper abietate can be synthesized in one step, and the suspending agent containing pyraclostrobin and copper abietate can be produced. The mass percentage of pyraclostrobin to copper abietate contained in the suspending agent is (1 to 20)-(2 to 1), the mass percentage of effective components (namely pyraclostrobin and copper abietate) in the composition is 5%-40%, and the rest components are aid components and water required in the preparation process of the suspending agent. The compounded suspending agent is mainly used for preventing and treating multiple fungal and bacterial diseases of crops and simultaneously has an obvious stimulation effect to the growth of the crops.

Description

technical field [0001] The invention relates to a preparation method of a copper rosinate compound suspending agent, in particular to a preparation method of pyraclostrobin and copper rosinate suspending agent, and belongs to the technical field of agricultural fungicides. Background technique [0002] Pyraclostrobin is a methoxyacrylate fungicide with a pyrazole structure developed by BASF in 1993. It inhibits mitochondrial respiration by preventing the transfer of electrons between microchrome b and C1, so that mitochondria cannot Generate and supply the energy (ATP) needed by cells for normal metabolism, eventually leading to cell death. [0003] Its structural formula is: [0004] [0005] Physical and chemical properties: pyraclostrobin is white to light beige odorless crystals, melting point: 63.7-65.2°C, density: 1.37, vapor pressure: 2.6×10 -8 Pa (20-25°C). [0006] Pyraclostrobin has a broad bactericidal spectrum, and can control most fungal diseases of crops ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N47/24A01N37/08A01P3/00
CPCA01N25/04A01N37/08A01N47/24A01N2300/00
Inventor 武展温书恒王勇刘盼娜杨春燕覃华全蔡凤英
Owner GUANGDONG GEOLONG BIOTECH
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