Aqueous emulsion pesticide and production method thereof

Abstract

The invention discloses an aqueous emulsion pesticide, which consists of the following components in percentage by weight: 1.5 to 25 percent of chemical material, 10 to 35 percent of dimethylbenzene, 1.6 to 4.5 percent of isophorone, 1.1 to 6.3 percent of cyclohexanone, 2.6 to 8 percent of tri-styrylphenol polyoxyethyl ether, 0.3 to 2 percent of butylbenisothiazolene, 3.2 to 15.3 percent of pesticide emulsifier No.404, 2 to 10 percent of ethanediol and the balance of water, wherein the chemical material is one or two of abamectin, Emamectin benzoate, flusilazole, deltamethrin, pyrimethanil, imazalil, triazophos, chlorpyrifos, kresoxim-methyl, pyridaben, propiconazole and phoxim. The invention has the advantages of wide application range, stable formulation, obvious synergism and simple production process.

Description

technical field [0001] The invention relates to a water-emulsion insecticide, in particular to a water-emulsion insecticide and a production method thereof, belonging to the field of water-emulsion insecticides. Background technique [0002] The international code name of water emulsion dosage form is Ew, which was once called concentrated emulsion (Concentrate Emulsion). It is a preparation made by mixing liquid or mixed with a solvent to disperse the liquid pesticide original drug in water with small droplets of 0.5-1.5 microns. The appearance is milky white milk-like liquid. Water emulsion uses a large amount of water as the main solvent, saving natural resources. It is an internationally recognized environmentally friendly water-based formulation, with low cost of additives and simple production equipment. It is one of the main formulations in the current development of pesticides. However, due to the technical level and process in the past, there are some technical pro...

AI Technical Summary

Problems solved by technology

[0003] (1) Short storage stability time: the normal storage time of pesticides is 2-3 years, while the normal storage time of water emulsion is about 1 year;

[0004] (2) Stratification is easy to occur: it will break the emulsion due to temperature, physical and chemical changes of the original drug and additives, ultraviolet rays, time, water quality, etc., that is, the separation of water and solvent to form stratification;

[0005] (3) Precipitation is prone to occur: due to the decomposition of auxiliary agents and the original drug, the original drug will fall out of the preparation, form rice grains or crystal-like substances and sink to the bottom, greatly reducing the efficacy and effectiveness of the product. content of ingredients;

[0006] (4) It is difficult to solve the problem of pesticide synergy: since water is the main solvent, the formation of water emulsion is a principle of dynamic stability. , is extremely unstable in this dosage form. Therefore, the surface swelling force of the normal dosage form of water-emulsion is similar to that of water. Poor adhesion and penetration are the biggest problems of water-emulsion, and it is difficult to improve the efficacy of the product.

[0007] (5) Emulsion in water is easy to freeze in winter, especially in northern my country where the temperature is lower than 15°C, which greatly limits the development of this formulation