Preparation method for slow-releasing mosquito-killing finishing agent

A finishing agent and repellent technology, which is applied in the field of preparation of slow-release mosquito repellent finishing agent, can solve the problems of toxic and side effects of the body, weak effect of mosquito killing or repelling, environmental pollution, etc., and achieve low equipment requirements and high durability Good, good stability

Inactive Publication Date: 2010-11-17
DONGHUA UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The active ingredients are exposed in the air, which has certain toxic and side effects on the body;
[0006] (2) In the case of air circulation, the effect of killing or repelling mosquitoes is very weak;
[0007] (3) Aerosol particles suspended in the air pollute the environment;

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Dissolve 1.5g of deltamethrin in 1.5g of dichloromethane, after complete dissolution, add 2.0g of TDI and 7.0g of emulsifier 2201 to obtain an oil phase; dissolve 4.5g of PEG400 in 100mL of distilled water to obtain a water phase; mix the two phases of oil and water , and stir evenly to obtain an oil-in-water emulsion with obvious blue light; transfer the emulsion into a three-necked flask, and add 0.02% of the catalyst dibutyltin dilaurate while stirring, and the two monomers react at the oil-water interface to form a prepolymerized Coat the oil phase with the body to form microcapsules; after reacting for 2 hours, add the curing cross-linking agent ethylenediamine, and react for 1 hour to obtain the microcapsule suspension. The content of deltamethrin in the raffinate was determined by extraction-spectrophotometry, and the encapsulation rate of microcapsules was calculated to be 71.2%.

Embodiment 2

[0034] Dissolve 1.5g of pyrethrin in 1.5g of ethyl acetate, add 2.2g of TDI and 7.5g of emulsifier 2201 to obtain the oil phase; take 100mL of distilled water as the water phase; mix the two phases of oil and water, stir evenly, and obtain a clear blue light oil-in-water emulsion. Transfer the emulsion into a three-necked flask, add 4.5g PEG400 and 0.02% catalyst dibutyltin dilaurate while stirring, and the two monomers react at the oil-water interface to form a prepolymer to coat the oil phase to form microcapsules; react for 2 hours Afterwards, ethylenediamine, a curing cross-linking agent, was added and reacted for 1 hour to obtain a microcapsule suspension. The content of deltamethrin in the raffinate was determined by extraction-spectrophotometry, and the encapsulation rate of microcapsules was calculated to be 67.9%.

Embodiment 3

[0036] Take 2g of permethrin and dissolve it in 2g of dichloromethane, add oily reactive monomer TDI, add 2g of TDI and 9.0g of emulsifier 2201 after completely dissolving to obtain the oil phase; take 6.0g of PEG400 and dissolve it in 100mL of distilled water to obtain the water phase; Mix the two phases and stir evenly to obtain an oil-in-water emulsion with obvious blue light; transfer the emulsion into a three-necked flask, and add a small amount of 0.02% catalyst dibutyltin dilaurate while stirring, and the two monomers will form at the oil-water interface. The reaction forms a prepolymer to coat the oil phase to form microcapsules; after reacting for 2 hours, add the curing cross-linking agent hydroquinone, and react for 1 hour to obtain a microcapsule suspension. The content of deltamethrin in the raffinate was determined by extraction-spectrophotometry, and the encapsulation rate of microcapsules was calculated to be 65.4%.

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PUM

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Abstract

The invention relates to a preparation method of a slow-releasing mosquito repelling and killing finishing agent, which comprises the steps: (1) a mosquito repelling and killing chemical is dissolved in an organic solvent according to the weight ratio of 1 to 1; an oil-soluble reactive monomer and an emulsifier are added to form an oil phase; 100ml of distilled water is measured, and a water-soluble reactive monomer PEG is added into the distilled water to form a water phase; the oil and the water are mixed and shaken up; (2) the oil-in-water emulsion is transferred into a three-mouth flask and is stirred while being added with a catalyst, namely, dibutyl tin laurate, so as to induce the two monomers to react, the stirring is continued for 2 hours, polymers generated by the monomer reaction cover effective components; and (3) a curing-crosslinking agent is added, and the stirring is continued for 1 hour to obtain the slow-releasing mosquito repelling and killing finishing agent. The preparation method of the slow-releasing mosquito repelling and killing finishing agent of the invention is low in equipment requirement, simple in operation, easy-controllable in condition, lower in cost and convenient in application, and is suitable for large-scale production; and the mosquito repelling and killing textiles finished by the finishing agent is better in washing resistance and durability.

Description

technical field [0001] The invention belongs to the field of preparation of mosquito repelling and killing finishing agents, in particular to a preparation method of slow-release mosquito repelling and killing finishing agents. Background technique [0002] Mosquitoes not only bite humans and animals, but also transmit many diseases, such as malaria, dengue fever, filariasis, Japanese encephalitis, etc., which seriously endanger human health. Vector mosquito control is an important measure to control the prevalence of such diseases, and for diseases that have no effective vaccines (such as dengue fever) and diseases that are resistant to therapeutic drugs (such as malaria), vector control plays an important role in preventing the occurrence and prevalence of these diseases. importance becomes even more important. For a long time, people have tried many methods to fight against vector mosquitoes and achieved remarkable results, but many problems have also been found. There ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/16D06M23/12D06M13/348D06M13/352D06M13/236B01J13/18
Inventor 蔡再生王玉娟张小丽杨玉红杨军李辉孙刚周惠明姜建英陈炳良
Owner DONGHUA UNIV
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