Spirotetramat film spreading oil suspending agent

Abstract

The invention relates to a spirotetramat film spreading oil suspending agent. The spirotetramat film spreading oil suspending agent comprises the following components (100 parts by weight): 1-40% of spirotetramat, 1-40% of a film forming agent, 2-25% of an auxiliary and the balance of oily dispersion medium, wherein weight ratio of the film forming agent is 5-15%, and the film forming agent is oneor more of dodecanol ester, octadecanol, propylene glycol phenyl ether, dibutyl phthalate and butyl ether. The spirotetramat film spreading oil suspending agent provided by the invention is high in working efficiency and low in cost, efficiency can be greatly improved, working efficiency can be improved by tens of times, and agricultural cost is reduced; fast-acting property is good, and controleffect is outstanding; and a flash point is high, and operation is safe. The film spreading agent provided by the invention has good film forming effect compared with the traditional film spreading agent, spreading performance of a medicament on the liquid surface of a paddy field is excellent, and the medicament also can be better spread in a micro water or water shortage environment, so that thefilm spreading oil suspending agent shows better bioactivity than a contrast oil suspending agent.

Description

technical field [0001] The invention belongs to the field of pesticides, and in particular relates to a film-developing oil suspension of spirotetramat. Background technique [0002] At present, the conventional spraying method is widely used in the control of economic crop pests in agricultural planting. The conventional spraying method is to dilute the pesticide preparation with water to a certain concentration, and use conventional sprayers (including manual and electric sprayers) to spray target crops or pests to prevent and control plant diseases and insect pests. This method of application has some drawbacks: [0003] (1) The effect of the conventional spray method is poor. Since the dosage forms of conventional spraying methods are usually emulsifiable concentrates, water preparations, wettable powders, suspension concentrates, water-emulsions, etc., there are certain defects in use, resulting in poor control effects. On the one hand, due to the addition of a large...

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Problems solved by technology

[0003] (1) The effect of the conventional spray method is poor

Since the dosage forms of conventional spraying methods are usually emulsifiable concentrates, water preparations, wettable powders, suspension concentrates, water emulsions, etc., there are certain defects in use, resulting in poor control effects

On the one hand, due to the addition of a large amount of water for dilution, the concentration of the medicinal solution is very low, the surface tension is often high, and the adhesion, wettability, and permeability on the surface of the crop or target with a waxy layer are poor, and it is difficult to enter the crop. and the target body; on the other hand, in the natural environment of light, high temperature and dryness, the water in the liquid medicine is easy to evaporate, causing the medicine to remain on the surface of the crop, which is easy to be photolyzed, and the liquid is easy to be removed from the crop due to poor adhesion after drying. The crops fall off and become ineffective; third, the droplet size of conventional spraying is relatively large, reaching 200-600 μm, which causes the liquid medicine sprayed on the surface of the crop or target to be easily lost due to poor adhesion; fourth, the droplet size of conventional spraying is difficult to Reaching the back of crop leaves and inside the canopy, the pesticide cannot effectively contact the pests and work

[0004] (2) Conventional spraying method has high labor intensity and low work efficiency

The labor intensity is high, and the per capita work efficiency is usually only 2-5 mu / day, which is difficult to meet the needs of large-scale planting

[0005] (3) The conventional spraying method requires a large amount of water to dilute the pesticide, usually with a water consumption of 450-900L / hm2. In arid and water-deficient areas, the difficulty of water intake becomes a restrictive factor for pest control.

[0006] (4) The seasonality of agricultural production is obvious, and pests and diseases often break out in a short time, requiring a lot of manpower to prevent and control. The conventional spraying method requires a lot of labor to complete the application

[0012] The traditional film spreading agent is generally vegetable oil or non-polar mineral oil. Its advantage is that the oil film is better when it is pure substance, but there are problems such as slow film spreading speed and dependence on water environment.

[0013] In addition, in the prior art, film-spreading oils or thermal mist require active ingredients to be dissolved in the formulation system, and both of them often use polar solvents such as DMF and DMSO, especially for such non-polar solvents that are not easily soluble in general non-polar The active ingredient in the solvent (spirotetramat has a solubility of 60g / l in toluene, 20°C). On the one hand, some of these polar solvents are not friendly to the environment; The continuity of oil film formation limits the popularization and application of film spreading agent technology

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