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Prothioconazole intelligent microcapsule suspending agent and preparation method thereof

A technology of microcapsule suspending agent and prothioconazole, applied in the directions of botanical equipment and methods, fungicides, biocides, etc., can solve problems such as easy capsule breaking, achieve long-lasting effect, convenient use and broad market prospects Effect

Inactive Publication Date: 2020-07-17
利民化学有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is very easy to break the capsule during storage and transportation.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of 10% prothioconazole microcapsule suspension

[0026] Prepare the oil phase: 10% prothioconazole, 1% polypropylene oxide, 1.5% styrylphenol ethoxylate, 2% caprylic / capric triglyceride and 5% isomyristate according to weight percentage Add the propyl ester to the reaction kettle together, raise the temperature of the reaction kettle to 55°C, and keep it warm at 55±5°C, turn on the stirrer, stir at a constant speed for 30 minutes, and the stirring rate is 530r / min. Prepare the water phase: Add 20% ultrapure water and 1.5% polyacrylic acid into the shearing kettle, raise the temperature of the shearing kettle to 55°C, and keep it warm at 55±5°C, turn on the stirrer, stir at a constant speed for 30 minutes, and the stirring rate is 340r / min. Emulsification: transfer the oil phase to the water phase, and keep it warm at 55±5°C, turn on the agitator to shear and stir, and shear and stir for 20 minutes at a rate of 7930r / min to obtain a milky white liquid. pH a...

Embodiment 2

[0028] Preparation of 20% prothioconazole microcapsule suspension

[0029] Prepare the oil phase: 20% prothioconazole, 2% polypropylene oxide, 2% styrylphenol polyoxyethylene ether, 5% caprylic / capric triglyceride and 6% isomyristate according to weight percentage Add the propyl ester to the reaction kettle together, raise the temperature of the reaction kettle to 55°C, and keep it warm at 55±5°C, turn on the stirrer, stir at a constant speed for 30 minutes, and the stirring rate is 687r / min. Prepare the water phase: Add 30% ultrapure water and 3% polyacrylic acid into the shearing kettle, raise the temperature of the shearing kettle to 55°C, and keep it warm at 55±5°C, turn on the stirrer, stir at a constant speed for 30 minutes, and the stirring rate is 393r / min. Emulsification: transfer the oil phase to the water phase, and keep it warm at 55±5°C, turn on the agitator to shear and stir, and shear and stir for 20 minutes at a shear rate of 9960r / min to obtain a milky white ...

Embodiment 3

[0031] Preparation of 30% prothioconazole microcapsule suspension

[0032]Formulated oil phase: 30% prothioconazole, 3.2% polypropylene oxide, 2.5% alkylphenol polyoxyethylene formaldehyde condensate sulfate, 7% caprylic / capric triglyceride and 8% meat Add isopropyl myristate into the reaction kettle together, raise the temperature of the reaction kettle to 55°C, and keep it warm at 55±5°C, turn on the stirrer, stir at a constant speed for 30 minutes, and the stirring rate is 748r / min. Prepare the water phase: Add 28% ultrapure water and 4.5% polyacrylic acid into the shearing kettle, raise the temperature of the shearing kettle to 55°C, and keep it warm at 55±5°C, turn on the stirrer, stir at a constant speed for 30 minutes, and the stirring rate is 443r / min. Emulsification: transfer the oil phase to the water phase, and keep it warm at 55±5°C, turn on the agitator to shear and stir, and shear and stir for 20 minutes at a shear rate of 11345r / min to obtain a milky white liqu...

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PUM

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Abstract

The invention belongs to the technical field of bactericides. The invention relates to a prothioconazole intelligent microcapsule suspending agent and a preparation method thereof. The suspending agent comprises the following components in percentage by weight: 1-5% of polypropylene oxide, 1-3% of an emulsifier, 2-40% of prothioconazole, 2-8% of caprylic / capric triglyceride, 2-8% of isopropyl myristate, 1-5% of polyacrylic acid, 1-3% of a surfactant, 0.1-0.3% of xanthan gum, 3-5% of glycerin, 0.1-0.3% of Kathon, 0.5-2% of magnesium aluminum silicate, 1-2% of hydrochloric acid and the balance of water. The preparation method comprises the following steps: preparing an oil phase, preparing a water phase, emulsifying, adjusting a pH value, microencapsulating and preparing the suspending agent. The microcapsule suspending agent disclosed by the invention has self-assembly, self-repair and high pH sensitivity, and meanwhile, the lasting period can be prolonged by slow release, and the use frequency is reduced, so that the use amount of pesticides is reduced. The method is simple in process and capable of effectively achieving mass production, and therefore the method has a high application value.

Description

technical field [0001] The invention belongs to the technical field of fungicides, and in particular relates to a prothioconazole intelligent microcapsule suspension and a preparation method thereof. Background technique [0002] Prothioconazole is a triazole fungicide, which is mainly used to control various diseases caused by fungi in cereals, beans and other crops. Its mechanism of action is to inhibit the demethylation of lanosterol, the precursor of sterol in fungi, namely demethylation inhibitors (DMIs). Prothioconazole not only has good systemic activity, excellent protection, treatment and eradication activities, but also has a long duration of action. Through a large number of field efficacy tests, the results show that prothioconazole not only has good safety for crops, but also has a good effect on disease prevention and treatment, and has a significant increase in yield. Compared with triazole fungicides, prothioconazole has a wider Spectrum fungicidal activity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N25/04A01N43/653A01P17/00A01P3/00
CPCA01N25/04A01N25/28A01N43/653
Inventor 李林虎马衍峰李新生孙敬权许宜伟孙丽梅
Owner 利民化学有限责任公司
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