Domestic controlled-release insecticidal composition
An insecticidal composition and slow-release technology, which are applied in the field of household slow-release insecticidal compositions, can solve the problems of short duration of drug effect, short effective time, inconvenient use, etc. The effect of covering and reducing the tendency of agglomeration
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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 into 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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