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Microcapsule preparation and preparation thereof and microcapsule suspending agent

A technology of microcapsule suspension agent and microcapsule, which is applied in the directions of insecticides, acaricides, biocides, etc., can solve the problem of unsatisfactory synergistic effect, demulsification, release and persistence, particle size increase, etc. problem, to achieve the effect of improving bioavailability, consistent release and lasting effect, and small average particle size

Inactive Publication Date: 2017-06-13
SHENZHEN NOPOSION AGROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a microcapsule preparation and its preparation and microcapsule suspension to overcome the phenomenon of flocculation, particle size increase, demulsification, etc. in the process of using the existing pesticide tank mix or the single pesticide microcapsule The technical problem of unsatisfactory synergistic effect caused by the inconsistency of the respective release and persistence in mixing

Method used

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  • Microcapsule preparation and preparation thereof and microcapsule suspending agent
  • Microcapsule preparation and preparation thereof and microcapsule suspending agent
  • Microcapsule preparation and preparation thereof and microcapsule suspending agent

Examples

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preparation example Construction

[0034] Correspondingly, the embodiment of the present invention also provides a preparation method of the above microcapsule preparation. In one embodiment, the preparation method of the microcapsule preparation of the embodiment of the present invention comprises the following steps:

[0035] Step S01: after dissolving pyraclostrobin technical material, abamectin technical drug and lambda-cyhalothrin technical drug in an organic solvent, adding oil-soluble cyst wall material for mixing treatment, and preparing an oil phase;

[0036] Step S02: dissolving the emulsified dispersant in water to prepare an aqueous phase;

[0037] Step S03: mixing and shearing the water phase and the oil phase to form an O / W emulsion;

[0038] Step S04: adding a water-soluble capsule wall material to the O / W emulsion for interfacial polymerization.

[0039] Specifically, as an embodiment of the present invention, in the above step S01, the mass ratio of the percent active substances of pyraclostr...

Embodiment 1

[0055]This example provides a pyraclostrobin · abamectin · lambda-cyhalothrin microcapsule preparation and 20% microcapsule suspension and its preparation method.

[0056] The microcapsule preparation of this embodiment uses the microcapsule film layer formed by the polymerization reaction of 1,6-hexamethylene diisocyanate and ethylenediamine, and the molar ratio of the isocyanate group functional group of the oil-soluble capsule wall material to the amine group functional group of the water-soluble capsule wall material is 1:1, its encapsulation mass ratio is 2.5:2.5:15.0 pyraclostrobin · abamectin · lambda-cyhalothrin active ingredient.

Embodiment 20

[0057] The preparation method of the present embodiment 20% microcapsule suspension:

[0058] S11: 26.0g of pyraclostrobin (96.0%), 26.3g of avermectin (95.0%) and 154.6g of lambda-cyhalothrin (97.0%) were dissolved in 100.0g of solvent oil In the mixed solvent of S-150 and 10.0g of sec-butyl acetate, add 25.0g of 1,6-hexamethylene diisocyanate (HMDI) and stir evenly to prepare an oil phase;

[0059] S12: 20.0g lignosulfonate (Ultrazine NA) and 8.0g polyoxyethylene sorbitan fatty acid ester (Tween-80) were dissolved in 372g deionized water to prepare an aqueous phase;

[0060] S13: adding the oil phase to the water phase, shearing to an O / W emulsion with an average particle size of 0.5 μm to 12 μm;

[0061] S14: Slowly add 89.5 g of 10% ethylenediamine aqueous solution under stirring, keep the reaction at 30°C±5°C for 2.0h, and cool to room temperature;

[0062] S15: Add 50.0g ethylene glycol, add 20% polyvinyl alcohol ( 502) 50.0g, silicone defoamer 1.0g and sodium benzoa...

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Abstract

The invention provides a microcapsule preparation and preparation thereof and a microcapsule suspending agent. The microcapsule preparation comprises a microcapsule shell and pesticide active ingredients coated with the microcapsule shell, wherein the pesticide active ingredients include pyraclostrobin, abamectin and efficient cyhalothrin. According to the microcapsule, the three pesticide active ingredients can effectively develop a synergistic effect, and has consistent release property and persistence; the synergistic effect is fully developed; the destroy of bad factors to the three pesticide active ingredients is blocked; the storage stability of the microcapsule preparation and an agent containing the microcapsule preparation is improved; and the degradation speed is reduced, thereby improving the bioavailability and improving the prevention and treatment effect. The preparation technology is easy to control; the stability of the performance of the prepared microcapsule preparation is effectively ensured. The microcapsule suspending agent contains the microcapsule preparation.

Description

technical field [0001] The invention belongs to the field of pesticide preparations, and in particular relates to a microcapsule preparation and its preparation, and a microcapsule suspension. Background technique [0002] Pyraclostrobin belongs to the methoxyacrylate fungicides, and is a mitochondrial respiration inhibitor. It acts on the inner membrane of mitochondria and destroys energy transfer by preventing electron transfer in cytochrome synthesis. It has the functions of protection, treatment, and leaf penetration. Pyraclostrobin is a broad-spectrum fungicide, registered on more than 100 crops for the control of at least 49 diseases, involving all four major subphyla of fungal pathogens. [0003] Abamectin is a class of sixteen-membered macrolide compounds with insecticidal, acaricidal and nematicidal activities. It is a neurotoxin that acts on insect neuronal synapses or neuromuscular synapses. Main effect, less contact and systemic effects, paralysis, refusal to fe...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N25/04A01N53/08A01N47/24A01N43/90A01P3/00A01P7/02A01P7/04A01P5/00
CPCA01N25/04A01N25/28A01N43/90A01N47/24A01N53/00A01N2300/00
Inventor 丁秀丽黄柯程陈晓枫马金龙张博文李谱超
Owner SHENZHEN NOPOSION AGROCHEM
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