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Domestic controlled-release insecticidal composition

An insecticidal composition and slow-release technology, applied in the field of household slow-release insecticidal compositions, can solve the problems of short duration of drug effect, short effective time, inconvenience for users, etc., achieve outstanding slow-release performance, and achieve uniform packaging Cover, improve the effect of uniformity

Active Publication Date: 2012-06-20
HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing various mosquito and fly killing liquids on the market are sprayed indoors during use. The medicine volatilizes quickly and can effectively kill the pests. However, due to the rapid release of the medicine, the maintenance time of the medicine effect is very short, and it needs to be sprayed from time to time. User inconvenience
Disclosed in Chinese patent application 95111196 is a kind of long-acting hygienic insecticide dip-coating concentrate, but this product has poisonous, peculiar smell, effective time is still not long, and it is inconvenient to use

Method used

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  • Domestic controlled-release insecticidal composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] The preparation of product A: 1) hydroxymethyl cellulose, attapulgite, jasmine essence, undecylenyl amidopropyl betaine are added to 500 parts by weight of 85 parts: 100 parts: 0.5 parts: 0.1 parts In an acetone solution of 0.1% (wt) pyrethroid amine, mix and stir at 40°C to 50°C to obtain a mixed solution;

[0016] 2) placing the mixed solution in an autoclave, adding carbon dioxide boosted by a high-pressure diaphragm pump into the autoclave, heating up to form a supercritical state and stirring to form a suspension;

[0017] 3) The suspension is sprayed and impacted by a pair of nozzles placed coaxially opposite each other, the separated coated microcapsule particles and carbon dioxide are separated by a gas-solid separator, and the separated microcapsule particles are collected to obtain the insecticide slow-release microcapsule product a.

Embodiment 2

[0019] Preparation of product B: use hydroxyethyl cellulose instead of hydroxymethyl cellulose, use undecylenyl amidopropyl betaine instead of undecylenamidopropyl betaine, repeat the preparation method of Example 1, and obtain the product b.

Embodiment 3

[0021] Product performance test: Mix products A and B evenly with water to prepare 0.1% (wt) atomized liquid for use. Put 30 live houseflies and 20 live Anopheles mosquitoes into each closed test box, use this The sprayer of invention sprays into the atomized liquid of product A and B respectively on the box wall with spraying method, and spray dose is 5ml. Start timing and regularly observe and record the number of knocked down after 24 hours, remove the mosquitoes and flies in the box, put the same number of mosquitoes and flies in the test box after 72 hours, start timing and regularly observe and record the knocked down after 24 hours only count. At the same time, a blank control test was carried out. See below for results.

[0022]

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PUM

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Abstract

The invention discloses a domestic controlled-release insecticidal composition, which is applicable to being sprayed indoor or into a closed environment for controlling insects, capable of slowly releasing effective insecticidal constituents, and persistently effective on killing domestic common pathogenic insects such as mosquitoes, flies, dust mites and the like. The invention further provides a disposable aerosol sprayer which releases the composition in a spray form and is convenient in use. The domestic controlled-release insecticidal composition comprises cellulose, palygorskite, essence, betaine type amphoteric surfactant and the like, which are well compounded, particles are further evenly coated by a novel supercritical impact particle coating method so that reunion tendency easily occurring in the conventional means is relieved, uniformity of microcapsules is improved, and common advantages of the existing supercritical coating methods are retained. The domestic controlled-release insecticidal composition is effective in insect killing, and evident in slow release.

Description

technical field [0001] The invention relates to a household slow-release insecticidal composition, in particular to a household slow-release insecticidal composition comprising insecticide slow-release microcapsules. The composition is suitable for killing insects indoors and in closed environments by spraying, can slowly release insecticidal active ingredients, and maintains long-term killing effects on mosquitoes, flies, dust mites and other common household pathogenic insects. Background technique [0002] Pyrethroid compounds are useful in controlling mosquitoes and are well known for their high insecticidal activity. However, the existing various mosquito and fly killing liquids on the market are sprayed indoors during use. The medicine volatilizes quickly and can effectively kill the pests. However, due to the rapid release of the medicine, the maintenance time of the medicine effect is very short, and it needs to be sprayed from time to time. Inconvenience to users. ...

Claims

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Application Information

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IPC IPC(8): A01N25/28A01N53/00A01P7/04A01P7/02B01J13/02
Inventor 吴浩
Owner HANGZHOU INST OF ADVANCED MATERIAL BEIJING UNIV OF CHEM TECH
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