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Water-soluble disintegration centralized release type pesticide microcapsule and preparation method thereof

A technology for microcapsules and pesticides, applied in the fields of botanical equipment and methods, biocides, pesticides, etc., can solve problems such as inability to achieve, and achieve the effects of improving stability, improving environmental pressure, and high product conversion rate.

Inactive Publication Date: 2020-10-16
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pesticide microcapsules with various shapes and sustained release requirements can be successfully synthesized by using the above-mentioned membrane materials and methods. Microcapsules are not yet available

Method used

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  • Water-soluble disintegration centralized release type pesticide microcapsule and preparation method thereof
  • Water-soluble disintegration centralized release type pesticide microcapsule and preparation method thereof
  • Water-soluble disintegration centralized release type pesticide microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: Accurately weigh 1 part of methacrylic acid, 6 parts of 2,4-diphenyl-1-methyl-2-pentene, 3 parts of ethyl α-cyanoacrylate, 1.5 parts of Tween 80, 0.1 Part of azobisisobutyronitrile, 74.2 parts of absolute ethanol in a three-necked flask, reflux reaction at 70 ° C for 4 hours, add 0.5 parts of lauric acid and 5 parts of imidacloprid in the reaction device, such as figure 1 Shown is the scanning electron microscope image of the original drug of imidacloprid of the present invention, the reaction temperature is raised to 85 ° C, and the stirring reaction is continued for 3 hours, and the sample of imidacloprid microcapsules is obtained, as figure 2 , image 3 Shown are the scanning electron micrographs and the transmission electron micrographs of the water-soluble disintegrating pesticide microcapsules of the present invention.

Embodiment 2

[0023] Example 2: Accurately weigh 2 parts of methacrylic acid, 8 parts of 2,4-diphenyl-1-methyl-2-pentene, 5 parts of ethyl α-cyanoacrylate, 2.5 parts of Tween 80, 0.3 1 part of azobisisobutyronitrile and 82.9 parts of absolute ethanol in a three-necked flask, reflux at 70°C for 4 hours, add 1 part of lauric acid and 7 parts of imidacloprid into the reaction device, raise the reaction temperature to 85°C, continue Stir the reaction for 3 hours to prepare imidacloprid microcapsule samples.

Embodiment 3

[0024] Example 3: Accurately weigh 2 parts of methacrylic acid, 8 parts of 2,4-diphenyl-1-methyl-2-pentene, 5 parts of ethyl α-cyanoacrylate, 2.5 parts of Tween 80, 0.3 1 part of azobisisobutyronitrile and 82.9 parts of absolute ethanol in a three-necked flask, reflux at 70°C for 4 hours, add 1 part of lauric acid and 5 parts of imidacloprid into the reaction device, raise the reaction temperature to 85°C, continue Stir the reaction for 3 hours to prepare imidacloprid microcapsule samples.

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Abstract

The invention discloses a water-soluble disintegration centralized release type pesticide microcapsule and a preparation method thereof, the microcapsule is prepared from imidacloprid, lauric acid, absolute ethyl alcohol and a shell membrane material, and the shell membrane material comprises methacrylic acid, 2, 4-diphenyl-1-methyl-2-pentene, alpha-ethyl cyanoacrylate, Tween 80 and azodiisobutyronitrile. When in use, the water-soluble disintegrating pesticide microcapsule disclosed by the invention can be used for intensively disintegrating and releasing and accurately controlling the releasetime at the same time, so that volatilization and loss of pesticide in the release process are reduced, and the stability of the pesticide is improved. The preparation method disclosed by the invention has the characteristics of simple and convenient process, high controllability, high product conversion rate and few byproducts, and can be widely applied to actual production.

Description

technical field [0001] The invention relates to a pesticide microcapsule and a preparation method thereof, in particular to a water-soluble disintegration concentrated release pesticide microcapsule and a preparation method thereof. Background technique [0002] Pesticides are indispensable means of agricultural production, and play an extremely important role in controlling pest hazards, promoting high agricultural yields, and ensuring agricultural production safety. However, due to the fact that conventional pesticide formulations such as emulsifiable concentrates, wettable powders, granules, etc. do not have the ability to control the release of active ingredients and backward use technology, pesticides are inevitably photolyzed, hydrolyzed, volatilized, lost and lost in the target or surrounding environment. Microbial degradation reduces its concentration below the effective concentration, making it difficult to volatilize the drug effect. Therefore, even pesticides wit...

Claims

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Application Information

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IPC IPC(8): A01N51/00A01N25/28A01P7/04C08F212/32C08F220/06C08F222/32
CPCA01N25/28A01N51/00C08F212/32C08F220/06C08F222/322
Inventor 左明明汤洁张耕豪刘延东周雨凤耿飞
Owner CHANGSHU INSTITUTE OF TECHNOLOGY