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Ethirimol emulsion in water and preparation method thereof

A pyrithrimol emulsion in water and the technology of pyrithrimol, applied in the field of pesticides, can solve the problems of poor drug efficacy and unstable preparations, and achieve the effects of excellent drug efficacy, excellent stability, and pollution reduction

Inactive Publication Date: 2010-03-17
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a pyrithrimol emulsion in water, which aims to solve the problems of poor drug efficacy and unstable preparations existing in the existing pyrithrimol preparations

Method used

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  • Ethirimol emulsion in water and preparation method thereof
  • Ethirimol emulsion in water and preparation method thereof
  • Ethirimol emulsion in water and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Proportioning 5% pyrimethol water emulsion according to the following percentage by weight:

[0038] Acetrimol 5%

[0039] N-n-octylpyrrolidone 5%

[0040] Tristyrylphenol ethoxylate phosphate 3%

[0041] Propylene Glycol 4%

[0042] water to 100%

[0043] First add pyrithrimol and N-octylpyrrolidone into the reaction kettle, and completely dissolve pyrithrimol in the solvent under mechanical stirring to obtain the oil phase; tristyrylphenol polyoxyethylene ether phosphate, Put water and propylene glycol into a high-shear kettle, stir to obtain a water phase, add the oil phase evenly into the water phase under a shear of 1000 rpm, and shear for 45 minutes to make it an average particle size of 0.21 microns, Uniform emulsion. The test results of the main technical indicators of the emulsion are shown in Table 1.

Embodiment 2

[0045] Proportioning 15% pyrimethol water emulsion according to the following percentage by weight:

[0046] Acetrimol 15%

[0047] N-Dodecylpyrrolidone 8%

[0048] Castor Oil Ethoxylates 5%

[0049] Propylene Glycol 4%

[0050] water to 100%

[0051] First add pyrithrimol and N-n-dodecylpyrrolidone into the reaction kettle, and completely dissolve pyrithrimol in the solvent under mechanical stirring to obtain an oil phase; mix castor oil polyoxyethylene ether, water and propylene glycol Put it into a high-shear kettle, stir, and prepare the water phase. Add the oil phase into the water phase evenly under the shear of 2000 rpm, and shear for 50 minutes to make it into a uniform emulsion with an average particle size of 0.23 microns. liquid. The test results of the main technical indicators of the emulsion are shown in Table 1.

Embodiment 3

[0053] Proportioning 30% pyrimethol in water emulsion according to the following percentage by weight:

[0054] Acetrimol 30%

[0055] Solvesso200 10%

[0056] Phosphate ester of EO / PO block copolymer 5%

[0057] Propylene Glycol 4%

[0058] water to 100%

[0059] First add pyrithrimol and Solvesso200 into the high-shear kettle and stir to make pyrithrimol completely dissolve in the solvent to obtain the oil phase; mix the phosphate ester of EO / PO block copolymer, water and propylene glycol to form a For the water phase, add the water phase evenly into the oil phase under a shear of 3000 rpm, and shear for 60 minutes to make it into a uniform emulsion with an average particle size of 0.26 microns. The test results of the main technical indicators of the emulsion are shown in Table 1.

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Abstract

The invention provides ethirimol emulsion in water and a preparation method thereof. The emulsion in water comprises the following components by weight percent: 1-50% of ethirimol, 1-20% of a solvent,1-8% of an emulsifier, 3-8% of an antifreeze agent and the balance water, wherein, the solvent is one or more than one of N-octyl pyrrolidone, N-dodecyl pyrrolidone, Solvesso 100, Solvesso 150 and Solvesso 200. The ethirimol emulsion in water of the invention has average particle size which is more than that of a suspension agent, thus having better stability and better effect and reducing environmental pollution.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a pyrimol emulsion in water and a preparation method thereof. Background technique [0002] Ethirimol (ethirimol) has a unique structure. As a compound with excellent performance, it was first successfully developed by the British ICI company in 1968. It has been used as a leading variety for the prevention and treatment of powdery mildew in Europe and other countries until now. Acetrimol is a systemic fungicide, which can be absorbed through leaves and roots, and has a systemic protective effect. It is used for foliar spray and can be absorbed and conducted through leaves to prevent diseases from spreading to new leaves. When treated as a seed dressing, the roots of the plants can continue to absorb the pesticide from the soil, thus having a protective effect throughout the growth period. [0003] Since pyrithrimol is almost insoluble in acetone and slightly soluble in di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N43/54A01N25/04A01P3/00
Inventor 赵军曹明章林雨佳孙华英刘立拴谢晔
Owner SHENZHEN NOPOSION AGROCHEM
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