Self diffusion spreading oil on water surfaces and preparation method thereof

Abstract

The invention concretely discloses self diffusion spreading oil on water surfaces and a preparation method thereof. The spreading oil comprises the following components in percentages by weight: 10-60% of a pesticide active component, 1-5% of a dispersant, 0.5-5%of a wetting agent, 1-3% of a suspending agent, 5-30% of a water surface spreading agent, and the balance being a filling material. The spreading oil is prepared by production technology which comprises the following steps: the pesticide active component, the dispersant, the wetting agent, the suspending agent, the water surface spreading agent and the filling material are added into a high shear emulsifying machine; after the components are mixed by the high shear emulsifying machine, the mixture is milled in a sand milling machine until particle size reaches 2-5 [mu]m to obtain the spreading oil. The water surface spreading agent with excellent performance is added in the preparation process of the spreading oil; the spreading oil can automatically diffuse on the water surface, the diffusion distance can be adjusted by an auxiliary agent, the diffusion speed can be adjusted too, and the spreading oil can automatically avoid barriers when facing barriers; a layer of film is formed on a water surface, and the film can diffuse along the water surface; a wet method is used in the preparation method, so that a problem that original drugs are not easy to dissolve in solvents is solved, polar solvents are not used, surrounding environments are not polluted, and preparation cost is low.

Description

technical field [0001] The invention specifically discloses a water surface self-diffusion film spreading oil agent and a preparation method thereof, and belongs to the field of pesticide processing. Background technique [0002] Traditional pesticide dosage form emulsifiable concentrate needs to use a lot of benzene solvents, while powder and wettable powder are prone to dust pollution. , sustained release, multi-functional and labor-saving direction. Some safe, economical and labor-saving dosage forms are being researched and have been applied. They will replace those dosage forms with serious environmental pollution, high toxicity and large dosage. Suspension concentrates are developing, and liquid dosage forms are water emulsions, suspension concentrates, and oil suspension concentrates that use water or vegetable oil as environmentally friendly solvents. With the increase in labor costs, floating granules, film-forming oils, Ultra-low-volume sprays, microcapsules, etc...

AI Technical Summary

Problems solved by technology

[0004] After the film-spreading oil agent liquid enters the water, it spreads rapidly, and the water surface extender makes it highly diffusible. If the liquid droplets cannot quickly diffuse the active ingredient from the sprinkled position, the release and uniform distribution of the active ingredient is prevented, and the pesticide will not be released. Potency will become insufficient, causing paddy field phytotoxicity and local residue, which will be unfavorable to crops, so it is very important to choose a water surface spreader with excellent spreading performance

[0005] At present, most of the preparation processes of domestic film-expanding oils use the emulsifiable oil method, which uses a large amount of organic solvents, causing pollution to the surrounding environment

For example, CN201510245168 introduces a film-spreading oil for preventing borers; CN201510245437 discloses a film-spreading oil for preventing and treating rice blast; Film oils; but they all use polar solvents such as dimethylformamide, pyrrolidone, and cyclohexanone to dissolve solid pesticides, which pollutes the environment and cannot prepare environmentally friendly film oils

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