Insect sex pheromone microcapsule suspension and preparation method thereof

A technology of microcapsule suspending agent and pheromone, which is applied in the fields of botanical equipment and methods, biocides, attractants, etc., can solve the problems of poor storage stability of insect sex pheromones, polluting the environment, and short duration of validity, etc. Achieve the effect of improving storage stability, environmental friendliness, and reducing the use of organic solvents

Inactive Publication Date: 2013-10-02
NUTRICHEM LAB CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, insect sex pheromones are mainly used in the form of oils (that is, insect sex pheromones are dissolved in organic solvents), but oil-based insect sex pheromones have disadvantages such as poor storage stability, environmental pollution, and short duration.

Method used

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  • Insect sex pheromone microcapsule suspension and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] (1) Preparation of oil phase: Dissolve 1 g of insect sex pheromone (8E,10E)-8,10-dodecadien-1-ol in 5 g of xylene at 25 °C, and add 1.5 g of toluene -2,4-diisocyanate (purchased from Cangzhou Dahua Group Co., Ltd.), mixed evenly to form an oil phase;

[0055] (2) Preparation of water phase: Dissolve 2g of castor oil polyoxyethylene ether (purchased from Jiangsu Haian Petrochemical Co., Ltd., brand EL-40) in 60g of water, and add 10g of 5% by weight sodium polyacrylate (purchased from Jinan Qing Zeke Trade Co., Ltd., the brand is PAAS-5040, the molecular weight is 40000-50000) aqueous solution, mix well to form a water phase;

[0056] (3) Preparation of oil-in-water emulsion: at 25 ° C, the oil phase obtained in step (1) and the water phase obtained in step (2) were mixed with a high-shear mixing emulsifier (purchased from Fluke Fluid Machinery Manufacturing Co., Ltd. company, the grade is FA25) mixed to form an oil-in-water emulsion;

[0057] (4) Preparation of microc...

Embodiment 2

[0060] (1) Preparation of oil phase: Dissolve 10 g of insect sex pheromone (8E,10E)-8,10-dodecadien-1-ol in 10 g of solvent naphtha No. 150 (purchased from Exxon Mobil company), and added 3g of polyphenyl polymethylene polyisocyanate (purchased from Yantai Wanhua Polyurethane Co., Ltd., the brand is WANNATE PM-200), and mixed evenly to form an oil phase;

[0061] (2) Preparation of water phase: Dissolve 2g of castor oil polyoxyethylene ether in 46.7g of water, and add 5g of 10% by weight polyvinyl alcohol (purchased from Beijing Dongfang Petrochemical Co., Ltd., brand PVA17-88) aqueous solution, and mix well into water phase;

[0062] (3) Preparation of oil-in-water emulsion: at 25°C, mix the oil phase obtained in step (1) with the water phase obtained in step (2) with a high-shear mixing emulsifier to form an oil-in-water emulsion;

[0063] (4) Preparation of microcapsule suspension: when the median volume diameter of the oil phase droplets in the oil-in-water emulsion obtai...

Embodiment 3

[0066] (1) Preparation of oil phase: Dissolve 20g of insect sex pheromone (8E,10E)-8,10-dodecadien-1-ol in 5g of 1,6-cyclohexanol at 25°C, and add 3g of polyphenylpolymethylene polyisocyanate and 1g of toluene-2,4-diisocyanate (purchased from Cangzhou Dahua Group Co., Ltd.), mixed evenly to form an oil phase;

[0067] (2) Preparation of the water phase: Dissolve 2 g of castor oil polyoxyethylene ether in 36.8 g of water, and add 10 g of 2% by weight gum arabic (purchased from Lichang Chemical Co., Ltd., Dongli District, Tianjin, with a weight average molecular weight of 220,000, ) aqueous solution, mixed uniformly to form an aqueous phase;

[0068] (3) Preparation of oil-in-water emulsion: at 25°C, mix the oil phase obtained in step (1) with the water phase obtained in step (2) with a high-shear mixing emulsifier to form an oil-in-water emulsion;

[0069] (4) Preparation of microcapsule suspension: when the median volume diameter of the oil phase droplets in the oil-in-water ...

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Abstract

The invention provides an insect sex pheromone capsule suspension. The microcapsule suspension contains an aqueous dispersion liquid and a plurality of microcapsule particles dispersed in the aqueous dispersion liquid, each of the microcapsule particles comprises a capsule core and a capsule wall cladding the capsule core, the capsule core contains insect sex pheromone (8E,10E)-8,10-dodecadien-1-ol, and the aqueous dispersion liquid contains an emulsifier. The invention also provides a preparation method of the microcapsule suspension, and the insect sex pheromone (8E,10E)-8,10-dodecadien-1-ol capsule suspension prepared through the method. The microcapsule suspension allows insect sex pheromone in the capsule core to be slowly released in order to realize long acting and slow release effects, and improves the storage stability; and additionally, the suspension of microcapsules in an aqueous solvent avoids the use of a large amount of organic solvents, and is friendly to the environment.

Description

technical field [0001] The present invention relates to an insect pheromone microcapsule suspension, a preparation method of the microcapsule suspension and the insect pheromone (8E, 10E)-8,10-dodecadien-1-ol prepared by the method microcapsule suspension. Background technique [0002] Encapsulation of pesticides, plant growth regulators, insect sex pheromones, etc. is an area of ​​increasing interest in recent years. [0003] Compared with conventional pesticide dosage forms, microcapsule suspension has the characteristics of prolonging the validity period, improving the effective utilization rate of pesticides, avoiding the loss of pesticides caused by the external environment, reducing poisonous and phytotoxicity, and reducing environmental pollution, especially for unstable, Pesticides that are easy to decompose, oxidize, and degrade have significantly improved stability, thereby prolonging their efficacy period. At present, microcapsule preparations have become one of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N25/04A01N25/28A01N31/02A01P19/00
Inventor 路军陈建伟廖远霞彭阳张聪薛进春洪营占玉萍詹福康
Owner NUTRICHEM LAB CO LTD
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