Preparation method of brominated double long chain quaternary ammonium bactericide crude drugs for livestock

Abstract

The invention discloses a preparation method of brominated double long chain quaternary ammonium bactericide crude drugs for livestock. The preparation method uses bromoalkane and a dimethylamine agueous solution as starting material, completes synthesis of the target product at 80 DEG C under normal pressure status through action of a catalyst, and thereby solves the problems that requirements for production equipment are high and security risk is high when methyl bromide is used; uses a home-made high molecular surfactant as the catalyst, recycles the catalyst, and thereby reduces production cost; can be widely used in breeding environment disinfection, utensil disinfection and aquaculture water disinfection.

Description

technical field [0001] The invention belongs to the field of disinfection medicines, in particular to a preparation method of a veterinary double long-chain quaternary ammonium bromide fungicide raw material medicine. Background technique [0002] There are roughly two synthetic methods for double-chain quaternary ammonium salts: one is to use double-chain tertiary amine and methyl bromide as starting materials, and the double-chain quaternary ammonium salt is obtained through catalytic addition reaction; Alkane and dimethylamine are raw materials, and double-chain quaternary ammonium salts are prepared through substitution reactions. In the prior art, most of them adopt the first method to synthesize. [0003] The first method uses methyl bromide as a raw material for production, and methyl bromide is a dangerous chemical, and it needs to be pressurized to react during the synthesis process, so it has higher requirements for production equipment and production process contr...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to address the above problems, propose a kind of preparation method of veterinary bromide double long-chain quaternary ammonium salt fungicide raw material, adopt bromoalkane and dimethylamine aqueous solution as starting raw material, under 80 ℃, normal The synthesis of the target product can be completed through the action of the catalyst in the pressurized state, thereby solving the problem of high requirements and high safety risks in the use of methyl bromide production equipment; using a recyclable production process and self-made polymer surfactant as a catalyst, and for solvents, by-products Products and catalysts are recycled to reduce production costs

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