A kind of permethrin aqueous emulsion for repelling and killing mosquitoes and flies and its preparation method

Abstract

The invention discloses a chloramine pyrethrins O / W type emulsion in water for repelling and killing mosquitoes and flies and a preparation method thereof. An emulsion in water of 1000 mL comprises raw materials by weight as follows: 3 to 7 g of tetramethrin, 13 to 17 g of chloramine tetramethrin, 48 to 52 mL of Tween-80, 18 to 22 mL of Span-80, and 3 to 7 g of milk flavor. The chloramine pyrethrins emulsion in water is a green environmental-friendly preparation, which contains no organic solvent, is low in production cost, prominent in repelling and killing mosquitoes and flies, simple in preparation technology, stable in quality, safe to people and livestock, convenient for use, reliable in effect, and suitable for places such as households, public places, and livestock farms.

Description

Technical field [0001] The invention belongs to the technical field of pharmaceutical preparations, and specifically relates to a chlormethrin water emulsion for repelling mosquitoes and flies and a preparation method thereof. Background technique [0002] At present, the mosquito and fly repellents sold in the market in my country are still mainly in the form of emulsifiable concentrates. Because emulsifiable concentrates are highly irritating, solvents are flammable and pollute the environment, and because the development of new drugs requires a large amount of capital, many companies will focus on new products under the current economic situation. Development of dosage forms. Emulsion inwater (EW) is a type of emulsion type (that is, O / W type) with water as the dispersion medium. The particle size is between 0.1 and 50.0 μm, the appearance is milky white, the continuous phase is water, and the organic solvent in the formulation Compared with the traditional veterinary medicine...

AI Technical Summary

Problems solved by technology

[0002] At present, the mosquito and fly repellents sold in the market in our country are still mainly in the form of emulsifiable concentrates. Because the emulsifiable concentrate is highly irritating, the solvent is flammable and pollutes the environment, and because the development of new drugs requires a lot of money, many companies will focus on new ones under the current economic situation. Dosage Form Development

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