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Insecticide and preparation method thereof

A technology of pesticides and medicaments, applied in the field of pesticides and their preparation, can solve the problems of easy decomposition and failure, short residual period, and hazards of active ingredients, and achieve the effect of not easy to decompose and fail, and long residual period

Inactive Publication Date: 2003-04-02
舟山明日纳米材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For contact insecticides, the use of granules is the most inconvenient due to the limitation of the placement position. Although aerosols and sprays with volatile gas or air as the carrier are more effective, they have a short period of residual effect after use. Very short, unstable to light, easy to decompose and fail, and its active ingredients permeate the space to cause certain harm to people, and its residual non-decomposable components cause certain pollution to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: Pesticide, wherein composition and content (weight ratio) are: tetramethrin: cypermethrin: nano silicon-based oxide: hydroxyethyl cellulose aqueous solution=1: 4: 60: 1800.

Embodiment 2

[0017] Embodiment 2: Tetramethrin and cypermethrin are mixed in a ratio of 1:3 by weight to make a pyrethroid agent, and acetone and benzene are mixed in a ratio of 1:2 by weight to make an organic solvent, and then 7 times the ratio of the pyrethroid The weight of pyrethrins is weighed to take nano-silicon-based oxides, mix them and put them into a ball mill for ball milling for 2 hours. After the ball milling, take out the mixture, dry it naturally and then dry it at 120°C to obtain solid insecticidal agent.

Embodiment 3

[0018] Embodiment 3: Tetramethrin and cypermethrin are mixed in a ratio of 1:4 by weight to make a pyrethroid agent, n-butanol and xylene are mixed in a ratio of 1:1 by weight to make an organic solvent, and then 10 times Weigh the nano-silicon-based oxides according to the weight of the pyrethroid agent, mix them and put them into a ball mill for 2 hours of ball milling. After the ball milling, take out the mixture, dry it naturally and then dry it at 120°C. Water and hydroxyethyl cellulose are used as raw materials to prepare a hydroxyethyl cellulose aqueous solution with a concentration of 8‰. Finally, the dried mixture is added to the hydroxyethyl cellulose aqueous solution in an amount of 3%, and after ultrasonic dispersion, a new type of transparent pyrethroid insecticide can be obtained.

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PUM

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Abstract

An insecticide is prepared from pyrethroid class of insecticides, nano Si-base oxide and organic solvent through mixing in ball grinder, removing organic solvent, and mixing with filming agent. Its advantages are durable action, high optical stability, and no environmental pollution.

Description

technical field [0001] The invention relates to an insecticide and a preparation method thereof, in particular to a contact insecticide and a preparation method thereof. Background technique [0002] The currently widely used insecticides are fumigants, fumigants, aerosols, sprays, granules, etc. For contact insecticides, the use of granules is the most inconvenient due to the limitation of the placement position. Although aerosols and sprays with volatile gas or air as the carrier are more effective, they have a short period of residual effect after use. It is very short, unstable to light, easy to decompose and fail, and its active ingredients permeate the space to cause certain harm to people, and its residual non-decomposable components cause certain pollution to the environment. Contents of the invention [0003] In view of the shortcomings of the above insecticides, the technical problem to be solved by the present invention i...

Claims

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Application Information

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IPC IPC(8): A01N53/00
Inventor 徐斌方燕骆维瑛刘景春黄海
Owner 舟山明日纳米材料有限公司
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