Hygienic insecticide microcapsules and preparation method thereof

A technology of insecticides and microcapsules, which is applied in the field of microcapsules of pyrethroid hygienic insecticides, can solve the problems of endangering human physical and mental health, increasing the cost of prevention and control, and large skin irritation, so as to reduce skin irritation and save prevention and treatment Excellent cost and long-lasting performance

Inactive Publication Date: 2017-05-10
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Pyrethroid insecticides are the main agents for controlling sanitary pests. However, the traditional processing formulations are emulsifiable concentrates and wettable powders, which not only use a large amount of organic solvents, produce unpleasant odors, but also cause dust pollution
There are also many disadvantages when carrying out residual

Method used

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  • Hygienic insecticide microcapsules and preparation method thereof
  • Hygienic insecticide microcapsules and preparation method thereof
  • Hygienic insecticide microcapsules and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0032] Example 1

[0033] 1) Weigh 0.30 g of tetramethrin technical drug into 7.50 g of ethyl acetate, stir until the technical drug is completely dissolved, then add 0.15g of ethyl cellulose to the solution, and stir until the ethyl cellulose is completely dissolved to produce amine-containing Clear solution A of pyrethroid and ethyl cellulose.

[0034] 2) Weigh 22.20 g of deionized water into a beaker, add 0.15 g of emulsifier, and then magnetically stir until the emulsifier is completely dissolved to make a transparent solution B containing emulsifier.

[0035] 3) Mix the transparent solution A obtained in step 1) and the transparent solution B obtained in step 2), and shear at high speed (15000 rpm) for 1 min with a high-speed shearing machine to obtain an emulsion.

[0036] 4) Remove the ethyl acetate from the emulsion obtained in step 3) through a rotary evaporator at 40 ℃ to obtain a suspension containing microspheres.

[0037] 5) The microsphere-containing suspension obtained i...

Example Embodiment

[0038] Example 2

[0039] 1) Weigh 0.30 g lambda-cypermethrin original drug into 9.00 g dichloromethane, stir until the original drug is completely dissolved, then add 0.30 g ethyl cellulose to the solution, and stir until the ethyl cellulose is completely dissolved to produce lambda-cypermethrin And ethyl cellulose transparent solution A.

[0040] 2) Weigh 19.80 g of deionized water into a beaker, add 0.90 g of emulsifier, and then magnetically stir until the emulsifier is completely dissolved to make a transparent solution B containing emulsifier.

[0041] 3) Mix the transparent solution A obtained in step 1) and the transparent solution B obtained in step 2), and shear at high speed (10000 rpm) for 1 min with a high-speed shearing machine to obtain an emulsion.

[0042] 4) Remove the methylene chloride from the emulsion obtained in step 3) through a rotary evaporator at 20°C to obtain a suspension containing microspheres.

[0043] 5) The microsphere-containing suspension obtained in...

Example Embodiment

[0044] Example 3

[0045] 1) Weigh 0.30 g of lambda-cyhalothrin original drug into 10.50 g of dichloromethane, stir until the original drug is completely dissolved, then add 0.45 g of ethyl cellulose to the solution, and stir until the ethyl cellulose is completely dissolved. Into a transparent solution A containing lambda-cyhalothrin and ethyl cellulose.

[0046] 2) Weigh 17.25 g of deionized water into a beaker, add 1.80 g of emulsifier, and then magnetically stir until the emulsifier is completely dissolved to make a transparent solution B containing emulsifier.

[0047] 3) Mix the transparent solution A obtained in step 1) and the transparent solution B obtained in step 2), and shear at high speed (15000 rpm) for 1 min with a high-speed shearing machine to obtain an emulsion.

[0048] 4) Remove the methylene chloride from the emulsion obtained in step 3) through a rotary evaporator at 40 ℃ to obtain a suspension containing microspheres.

[0049] 5) The microsphere-containing suspen...

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Abstract

The invention relates to a hygienic insecticide, in particular to hygienic insecticide microcapsules and a preparation method thereof. Each hygienic insecticide microcapsule comprises a capsule core and a capsule wall, wherein the capsule core is hygienic insecticide technical, and the capsule wall is made of a polymer material. The biodegradable polymer substances are taken as capsule wall materials, easily recycled organic solvents are selected, and the novel hygienic insecticide microcapsules with a slow release function are prepared by controlling the condition. The hygienic insecticide microcapsules have the characteristics that the microcapsules are illumination-resistant, acid-resistant and alkali-resistant, slow release is realized, skin irritation is reduced and the like.

Description

technical field [0001] The invention relates to a hygienic insecticide, in particular to a microcapsule of a pyrethroid hygienic insecticide. Background technique [0002] Mosquitoes, flies, cockroaches, bedbugs, termites and other sanitary harmful organisms exist in hotels, restaurants, hospitals, airports, supermarkets and homes and other places closely related to human activities, which have brought great impact on people's production and life. Hazards not only affect human health, work and life, but also seriously affect my country's economic and cultural construction, and endanger social stability to a certain extent. Pyrethroid insecticides are the main agents for controlling sanitary pests. However, the traditional processing formulations are emulsifiable concentrates and wettable powders, which not only use a large amount of organic solvents, produce unpleasant odors, but also cause dust pollution. There are also many disadvantages when carrying out residual spraying...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N53/08A01N53/04A01P7/04
Inventor 冯建国钱坤杨关天沈亚明孙陈铖丁威威
Owner YANGZHOU UNIV
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