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Emamectin benzoate microcapsule suspending agent and preparation method thereof

A technology of microcapsule suspending agent and emamectin, which is applied in the field of pesticides, can solve the problems of low encapsulation rate, small drug loading, complicated preparation process, etc., and achieves improved encapsulation rate, stable microcapsule suspension system, strong colloid and the like. The effect of stabilizing ability

Active Publication Date: 2021-01-01
HUIZHOU YINNONG TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the current microcapsule suspensions with emamectin benzoate as the active ingredient composition have the problems of low encapsulation efficiency, small drug loading and complicated preparation process.

Method used

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  • Emamectin benzoate microcapsule suspending agent and preparation method thereof
  • Emamectin benzoate microcapsule suspending agent and preparation method thereof
  • Emamectin benzoate microcapsule suspending agent and preparation method thereof

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preparation example Construction

[0049] The present invention also provides a preparation method of microcapsule suspension, which is used to prepare the microcapsule suspension of any one of the above embodiments, comprising the following steps: adding emamectin benzoate to a solvent for dissolving operation, and then adding capsule material for inclusion Operation to obtain A solution; add emulsifier and dispersant to deionized water for mixing operation to obtain B solution; add curing agent to deionized water for dissolving operation to obtain C solution; add the B solution to the A solution Perform shear emulsification operation to obtain D solution; add the C solution dropwise to the D solution for solidification operation, and then perform stirring operation to obtain F solution; add antifreeze, defoamer, thickener and anti-corrosion The agent is added into the F solution for stirring and dispersing operation to obtain a microcapsule suspension.

[0050] In the preparation method of the above-mentioned...

Embodiment 1

[0069] Dissolve 1g of emamectin benzoate former drug with 5g of POLARCLEAN solvent and 5g of sec-butyl acetate, add 0.5g of isophorone diisocyanate after dissolving and mix to obtain A solution; Tween 80 and 4g of alkylnaphthalene sulfonate formaldehyde condensate Morwet D-425 were mixed together with 75.05g of deionized water to obtain solution B; 0.1g of triethanolamine was added to 5g of deionized water for mixing and dissolving operation to obtain Solution C; add solution B to solution A, shear and emulsify for 3 minutes to obtain solution D; slowly add solution C to solution D at a rate of 1ml / min, turn on the mixer and stir while adding, at a rate of 300r / min, after the dropwise addition, continue to stir for 50min to form F solution; add 1g propylene glycol, 2g polyvinyl alcohol, 0.2g xanthan gum, 0.1g preservative and 0.05g defoamer to F solution, stir and disperse for 15min Obtain microcapsule suspension.

Embodiment 2

[0071] Dissolve 3 g of emamectin benzoate raw drug with 15 g of capric acid amide ADM810 solvent, add 0.8 g of toluene diisocyanate after dissolving and mix to obtain A solution; 1 g of fatty alcohol polyoxygen Vinyl ether AEO-3, 1g of tristyrylphenol polyoxyethylene ether 601#, 5g of nonionic polymeric dispersant Tersperse 2500 and 1g of nonionic dispersant PE10500 were mixed together with 63.24g of deionized water to obtain B solution ;Add 0.16g of ethylenediamine to 5g of deionized water for mixing and dissolving operation to obtain solution C; add solution B to solution A, and shear and emulsify it for 6min to obtain solution D; slowly add solution C to solution D, drop Acceleration is 4ml / min, turn on the mixer and stir while adding dropwise, the stirring speed is 500r / min, after the dropwise addition, continue to stir for 70min, it is F solution; add 3g ethylene glycol, 1g white carbon black, 0.1 g magnesium aluminum silicate, 0.5 g preservative and 0.2 g defoamer, stirr...

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Abstract

The invention provides an emamectin benzoate microcapsule suspending agent and a preparation method thereof. The microcapsule suspending agent is prepared from the following components in parts by mass: 1 to 5.7 parts of emamectin benzoate; 0.5 to 2 parts of a capsule material; 0.1 to 0.5 part of a curing agent; 10 to 25 parts of a solvent; 4-8 parts of a dispersant; 0.2 to 1.5 parts of a thickening agent; 1-3 parts of an antifreezing agent; 0.05 to 0.2 part of a defoaming agent; 1-2 parts of an emulsifier; and 50 to 82 parts of deionized water. The microcapsule suspending agent is high in encapsulation efficiency and large in drug loading capacity.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a emamectin benzoate microcapsule suspension and a preparation method thereof. Background technique [0002] Emamectin benzoate, the full name is emamectin benzoate, emamectin salt is a new type of high-efficiency semi-synthetic antibiotic insecticide synthesized from the fermented product avermectin B1, which has super high efficiency, low toxicity and instant The preparation is nearly non-toxic, low residue, pollution-free and other characteristics of biological pesticides, and is widely used in the prevention and control of various pests on vegetables, fruit trees, cotton and other crops. [0003] Microcapsule suspension is a pesticide dosage form that uses natural or synthetic polymer materials to form a core-shell structure micro-container to coat pesticides in it and suspend them in water. The microcapsule suspension consists of two parts: the capsule wall and the capsule core. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N25/28A01N43/90A01P7/00
CPCA01N25/04A01N25/28A01N43/90Y02A50/30
Inventor 吴丽文谭葵廖联安
Owner HUIZHOU YINNONG TECH
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