A kind of mancozeb microcapsules and preparation method thereof

A technology of mancozeb and microcapsules, which is applied in the field of fungicides, can solve the problems of easy decomposition of products, easy occurrence of drug damage, and large dosage, and achieve the effects of low production cost, inhibition of volatilization and decomposition, and high drug efficacy

Active Publication Date: 2017-07-04
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

At present, the dosage forms produced at home and abroad are traditional dosage forms such as wettable powders and suspension concentrates. These dosage forms are used in large quantities, and the products are easy to decompose and cause phytotoxicity, and the pollution is serious in the process of production and application.

Method used

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  • A kind of mancozeb microcapsules and preparation method thereof
  • A kind of mancozeb microcapsules and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Preparation of Microcapsules:

[0028] (1) Composition of raw material formula:

[0029] Ethylenediamine: 25%

[0030] Carbon disulfide: 15%

[0031] Manganese Sulfate 30%

[0032] Zinc Sulfate 10%

[0033] Dispersant: T20203%;

[0034] Wetting agent: T10101%;

[0035] Urea aldehyde resin 0.5%

[0036] PH regulator is: calcium lignosulfonate 7%

[0037] The balance is water.

[0038] (2) Preparation process

[0039] According to the above weight percentage, first put water and ethylenediamine into the reaction kettle, start to add carbon disulfide dropwise, increase the temperature to 50 degrees and add dropwise at a constant speed, finish adding in 30 minutes and keep stirring, the stirring speed is 300 rpm, and stir for 30 minutes After the temperature was increased to 60 degrees, manganese sulfate was added at a constant speed and added within 40 minutes. After stirring for 30 minutes, add zinc sulfate, keep the temperature at 60 degrees, stir for 1 hour, a...

Embodiment 2

[0041] Preparation of Microcapsules

[0042] (1) Composition of raw material formula

[0043] Ethylenediamine: 30%

[0044] Carbon disulfide: 20%

[0045] Manganese Sulfate 20%

[0046] Zinc Sulfate 10%

[0047] Dispersant: T20205%;

[0048] Wetting agent: T10101%;

[0049] Urea aldehyde resin 0.8%

[0050] PH regulator is: calcium lignosulfonate 5%

[0051] The balance is water.

[0052] (2) Preparation process

[0053] According to the above weight percentage, first put water and ethylenediamine into the reaction kettle, start to add carbon disulfide dropwise, increase the temperature to 50 degrees and add dropwise at a constant speed, finish adding in 30 minutes and keep stirring, the stirring speed is 300 rpm, and stir for 30 minutes After the temperature was increased to 60 degrees, manganese sulfate was added at a constant speed and added within 40 minutes. After stirring for 30 minutes, add zinc sulfate, keep the temperature at 60 degrees, stir for 1 hour, adj...

Embodiment 3

[0055] Preparation of Microcapsules

[0056] (1) Composition of raw material formula:

[0057] Ethylenediamine: 30%

[0058] Carbon disulfide: 20%

[0059] Manganese Sulfate 20%

[0060] Zinc Sulfate 10%

[0061] Dispersant: T20205%;

[0062] Wetting agent: T10101%;

[0063] Urea aldehyde resin 0.8%

[0064] PH regulator is: calcium lignosulfonate 5%

[0065] The balance is water.

[0066] (2) Preparation process

[0067]According to the above weight percentage, first put water and ethylenediamine into the reaction kettle, start to add carbon disulfide dropwise, increase the temperature to 50 degrees and add dropwise at a constant speed, finish adding in 30 minutes and keep stirring, the stirring speed is 400 rpm, and stir for 30 minutes After the temperature was increased to 60 degrees, manganese sulfate was added at a constant speed and added within 40 minutes. After stirring for 30 minutes, add zinc sulfate, keep the temperature at 60 degrees, stir for 1 hour, adj...

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Abstract

The invention provides a 90% mancozeb microcapsule and a preparation method thereof. The method comprises the following steps: adding water and ethylenediamine into a reaction kettle, raising the temperature of the reaction kettle to 50 DEG C, and keeping at 50+ / -5 DEG C; dropwise adding carbon bisulfide within 30 minutes in a constant-speed stirring process; after stirring for 30 minutes, raising the temperature of the reaction kettle to 60 DEG C; adding manganese sulfate within 40 minutes in the constant-speed stirring process; after stirring for 30 minutes, adding zinc sulfate and stirring for 1 hour, and then adding a dispersant and a wetting agent; regulating the pH value to be 7 by using a pH regulator; adding urea formaldehyde resin for carrying out shearing emulsification for 30 minutes to obtain mancozeb emulsion; and continuously spraying and curing in a spray tower to obtain a capsule, thereby obtaining the 90% mancozeb microcapsule. The mancozeb microcapsule produced by the method provided by the invention has the advantages of high effective ingredient content, low production cost, safety in production and use, controllable release and environmental friendliness; and the preparation process is simple, the cost is saved, and the environmental pollution is reduced.

Description

[0001] Technical field: [0002] The invention relates to a bactericide, in particular to a 90% mancozeb microcapsule and a preparation method thereof. [0003] Background technique: [0004] Mancozeb is a protective fungicide that can prevent fungal leaf diseases such as blight, downy mildew, and powdery mildew on various fruit trees and vegetables. At present, the dosage forms produced at home and abroad are traditional dosage forms such as wettable powders and suspension concentrates. These dosage forms are used in large quantities, and the products are easy to decompose, easily cause phytotoxicity, and cause serious pollution during production and application. [0005] Therefore, the present invention provides a 90% mancozeb microcapsule as a new type of controllable release technology. Its preparation method is unique, and there is no pollution in the production process and application process, which can greatly reduce the dosage and cost. [0006] Invention content: [...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N47/14A01N25/28A01P3/00
Inventor 孙敬权马贤振孙丽梅
Owner 利民化学有限责任公司
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