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 spraying outdoors to prevent and control sanitary pests. It is highly irritating to the operator's eyes and skin, has a short duration, requires repeated application of pesticides, cumbersome operation, increases the cost of prevention and control, and is easy to cause environmental pollution and endanger human beings. physical and mental health

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

Embodiment 1

[0033] 1) Weigh 0.30 g of the original drug of tetramethrin and put it into 7.50 g of ethyl acetate, stir until the original drug is completely dissolved, then add 0.15 g of ethyl cellulose into the solution, stir until the ethyl cellulose is completely dissolved, and make amine-containing Clear Solution A of Pyrethrin and Ethylcellulose.

[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 prepare a transparent solution B containing emulsifier.

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

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

[0037] 5) The microsphere-containing suspension obtained in step 4) is f...

Embodiment 2

[0039] 1) Weigh 0.30 g of beta-cypermethrin and put it into 9.00 g of dichloromethane, stir until the original medicine is completely dissolved, then add 0.30 g of ethyl cellulose into the solution, stir until the ethyl cellulose is completely dissolved, and make beta-cypermethrin and a clear solution A of ethyl cellulose.

[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 prepare a transparent solution B containing emulsifier.

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

[0042] 4) The emulsion obtained in step 3) was removed by a rotary evaporator at 20 °C to obtain a suspension containing microspheres.

[0043] 5) The microsphere-containing suspension obtained in step 4) is filtered, washed with deio...

Embodiment 3

[0045] 1) Weigh 0.30 g of lambda-cyhalothrin technical material into 10.50 g of dichloromethane, stir until the technical material is completely dissolved, then add 0.45 g of ethyl cellulose into the solution, stir until the ethyl cellulose is completely dissolved, and prepare A clear solution A containing lambda-cyhalothrin and ethylcellulose was obtained.

[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 prepare 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 cut at high speed (15000 rpm) with a high-speed shear for 1 min to obtain an emulsion.

[0048] 4) The emulsion obtained in step 3) was removed by a rotary evaporator at 40 °C to obtain a suspension containing microspheres.

[0049] 5) The microsphere-containing suspension obtained in step 4) ...

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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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