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Emodin monomethyl ether microcapsule sustained-release agent and preparation method thereof

A technology of emodin methyl ether and slow-release agent, applied in botany equipment and methods, biocide, fungicide, etc.

Pending Publication Date: 2021-05-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Any pesticide must be made into preparations. The commercially available dosage forms include solutions, suspensions, seed coatings, seed dressings, etc. At present, there is no report of slow-release preparations of emodin methyl ether

Method used

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  • Emodin monomethyl ether microcapsule sustained-release agent and preparation method thereof
  • Emodin monomethyl ether microcapsule sustained-release agent and preparation method thereof
  • Emodin monomethyl ether microcapsule sustained-release agent and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Embodiment 1: Emodin methyl ether microcapsules with a water content of capsule core of 0% and a mass ratio of core wall of 3:1

[0039] An emodin methyl ether microcapsule slow-release agent, including a capsule core and a capsule wall, is characterized in that the weight percentage of the formula is: 0.08% emodin methyl ether, 25% capsule wall material, 52% oil phase, emulsifier 6%, co-emulsifier 17%, pH regulator 0.5%. Wherein the emodin methyl ether bulk drug content is 13%, the capsule wall material is melamine formaldehyde resin, the oil phase is n-butanol, the emulsifier is polyethylene glycol 400, the co-emulsifier is sodium lauryl ether sulfate, and the pH regulator is Triethanolamine, acetic acid.

[0040] The pesticide emodin methyl ether microcapsules can be prepared by using the formula of the emodin methyl ether microcapsule slow-release agent. Simply put, 3.3g of sodium lauryl ether sulfate, 10.5g of n-butanol, and 1.2g of polyethylene glycol 400 were m...

Embodiment 2

[0041] Embodiment 2: Emodin methyl ether microcapsules with a capsule core water content of 0% and a core wall mass ratio of 2:1

[0042] An emodin methyl ether microcapsule sustained-release preparation, comprising a capsule core and a capsule wall, characterized in that the weight percentage of the formula is: 0.07% emodin methyl ether, 33% capsule wall material, 47% oil phase, emulsifier 5%, co-emulsifier 15%, pH regulator 0.5%. Wherein the emodin methyl ether bulk drug content is 13%, the capsule wall material is melamine formaldehyde resin, the oil phase is n-butanol, the emulsifier is polyethylene glycol 400, the co-emulsifier is sodium lauryl ether sulfate, and the pH regulator is Triethanolamine, acetic acid.

[0043] The pesticide emodin methyl ether microcapsules can be prepared by using the formula of the emodin methyl ether microcapsule slow-release agent. Simply put, 2.2g of sodium lauryl ether sulfate, 7.0g of n-butanol, and 0.8g of polyethylene glycol 400 were m...

Embodiment 3

[0044] Example 3: Emodin methyl ether microcapsules with a water content of 0% in the capsule core and a core wall mass ratio of 1:1

[0045] An emodin methyl ether microcapsule slow-release agent, comprising a capsule core and a capsule wall, characterized in that the weight percentage of the formula is: 0.05% emodin methyl ether, 50% capsule wall material, 35% oil phase, emulsifier 4%, co-emulsifier 11%, pH regulator 0.5%. Wherein the emodin methyl ether bulk drug content is 13%, the capsule wall material is melamine formaldehyde resin, the oil phase is n-butanol, the emulsifier is polyethylene glycol 400, the co-emulsifier is sodium lauryl ether sulfate, and the pH regulator is Triethanolamine, acetic acid.

[0046] The pesticide emodin methyl ether microcapsules can be prepared by using the formula of the emodin methyl ether microcapsule slow-release agent. Simply put, 1.1g of sodium lauryl ether sulfate, 3.5g of n-butanol, and 0.4g of polyethylene glycol 400 were mixed ...

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Abstract

The invention relates to the technical field of pesticide sustained-release preparations, in particular to an emodin methyl ether microemulsion microcapsule sustained-release formulation and a preparation method thereof. The emodin methyl ether is prepared into microemulsion, the solubility of the microemulsion is increased, the controllable release speed is obtained, then the microemulsion is encapsulated in melamino-formaldehyde microcapsules, and slow release of the emodin methyl ether is obtained. The microcapsule sustained-release agent has the characteristics of uniform particle distribution, high drug loading capacity and slow and lasting drug effect, the preparation process is easy to operate, the raw materials are cheap and easy to obtain, and the microcapsule sustained-release agent can be used for preventing and treating diseases and insect pests, especially cucumber powdery mildew, can reduce the administration frequency, and has important practical application value.

Description

technical field [0001] The invention relates to the technical field of pesticide preparations, in particular to an emodin methyl ether microcapsule sustained-release agent and a preparation method thereof. Background technique [0002] Emodin methyl ether is a botanical pesticide extracted from the root and stem of the Chinese herbal medicine rhubarb, which belongs to anthraquinone compounds. The ingredient is a plant secondary metabolite, which has the effect of preventing and controlling plant diseases, and has the advantages of greenness, pollution-free, low residue, high efficiency, low toxicity, etc., and is especially suitable for green organic vegetable production. Studies have shown that emodin methyl ether has good activity against plant pathogenic fungi such as cucumber powdery mildew, rice blast, cucumber gray mold, and wheat powdery mildew, and can effectively prevent cucumber powdery mildew, rice blast, and rice sheath blight. fungus, tobacco Alternaria, cotton...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/28A01N35/06A01P3/00
CPCA01N25/28A01N35/06
Inventor 王亚晶吕世群曹芳芝
Owner CHANGZHOU UNIV