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Active bromine quaternary ammonium salt as well as preparation method and application thereof

A technology of quaternary ammonium salt and active bromine, applied in active bromine quaternary ammonium salt and application fields, can solve the problems of poor stability and low active bromine content, and achieve the effects of strong bactericidal ability, high active bromine content and good product stability

Active Publication Date: 2020-09-04
自然资源部天津海水淡化与综合利用研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is to overcome the deficiencies in the prior art, provide a kind of application of novel active bromide quaternary ammonium salt and active bromide quaternary ammonium salt in seawater sterilization field, The active bromine quaternary ammonium salt has excellent stability, high active bromine content and good bactericidal activity as a fungicide, which improves the problems of poor stability and low active bromine content of traditional active bromine fungicides

Method used

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  • Active bromine quaternary ammonium salt as well as preparation method and application thereof
  • Active bromine quaternary ammonium salt as well as preparation method and application thereof
  • Active bromine quaternary ammonium salt as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Preparation of Lauryltrimethylammonium Tribromide (2a)

[0050]

[0051] Step 1, adopt water to dissolve 1g lauryl trimethyl ammonium bromide, prepare lauryl trimethyl ammonium bromide solution, the mass ratio of described water and described lauryl trimethyl ammonium bromide is 20:1;

[0052] Step 2, add NaBr in described lauryltrimethylammonium bromide ammonium solution, and stir, and stirring time is 0.1 hour, and stirring speed is 450rpm, and the NaBr and described lauryltrimethylammonium bromide The molar mass ratio is 2.2:1;

[0053] Step 3, add potassium persulfate compound salt (oxone) aqueous solution dropwise to the mixture obtained after step 2 is completed, and the stirring speed is 450rpm, and continue to react for 0.25 hours after adding the potassium persulfate compound salt solution to obtain Reaction product, wherein the mass content of potassium persulfate compound salt in the potassium hydrogen persulfate complex salt solution is that the molar ma...

Embodiment 2

[0058] Preparation of cetyltrimethylammonium tribromide (2b)

[0059]

[0060] Step 1, adopt water to dissolve 1g cetyltrimethylammonium bromide, prepare cetyltrimethylammonium bromide solution, the mass ratio of described water and cetyltrimethylammonium bromide is 80:1;

[0061] Step 2, adding NaBr to the cetyltrimethylammonium bromide solution, and stirring, the stirring time is 0.5 hour, and the stirring speed is 600rpm, the NaBr and the cetyltrimethylammonium bromide The molar mass ratio of ammonium chloride is 2.5:1;

[0062] Step 3, add potassium persulfate compound salt (oxone) aqueous solution dropwise to the mixture prepared after step 2 is completed, and the stirring speed is 600rpm, and continue to react for 0.5 hours after adding the potassium hydrogen persulfate compound salt solution to obtain Reaction product, wherein the mass content of potassium bisulfate compound salt in the potassium hydrogen persulfate complex salt solution is the molar mass ratio of ...

Embodiment 3

[0067] Preparation of dodecyldimethylbenzylammonium tribromide (2c)

[0068]

[0069] Step 1, adopt water to dissolve 1g dodecyl dimethyl benzyl ammonium bromide, prepare dodecyl dimethyl benzyl ammonium bromide solution, described water and dodecyl dimethyl benzyl bromide The mass ratio of ammonium chloride is 50:1;

[0070] Step 2, adding NaBr to the dodecyl dimethyl benzyl ammonium bromide solution, and stirring, the stirring time is 0.3 hours, the stirring speed is 300rpm, the NaBr and the dodecyl dimethyl ammonium bromide The molar mass ratio of benzyl ammonium bromide is 2.2:1;

[0071] Step 3, add potassium persulfate compound salt (oxone) aqueous solution dropwise to the mixture obtained after step 2 is completed, the stirring speed is 300rpm, and continue to react for 0.25 hours after the addition of the potassium persulfate compound salt solution is completed, to obtain Reaction product, wherein the mass content of potassium persulfate compound salt in the potas...

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Abstract

The invention discloses an active bromine quaternary ammonium salt, which has a structural general formula shown as a formula (I) or a structural general formula shown as a formula (II), wherein R1 isC12-C16 alkyl, R2 and R4 are methyl, and R3 is methyl, benzyl or p-bromophenoxyethyl; wherein R1 is an alkyl group of C12-C16. The invention also provides a preparation method, which comprises the following steps: step 1, preparing an organic ammonium bromide solution; step 2, adding NaBr into the organic ammonium bromide solution; step 3, adding a potassium hydrogen persulfate composite salt aqueous solution into a mixture prepared after the step 2 is completed; and step 4, filtering and recrystallizing to obtain the active bromine quaternary ammonium salt. The active bromine quaternary ammonium salt prepared by the invention can be used as a bactericide, and has the characteristics of simple process, no generation of by-products in the synthesis process, good product stability, high active bromine content, strong bactericidal ability, safety, high efficiency and the like.

Description

technical field [0001] The invention belongs to the technical field of organic chemistry, and in particular relates to an active bromide quaternary ammonium salt and its application. Background technique [0002] With the development of the world economy and society, the problem of water resources is becoming more and more serious, and solving the problem of water resource shortage has become a common topic worldwide. Facing the shortage of fresh water resources in my country's coastal cities, the development and utilization of seawater instead of fresh water as industrial water, especially as industrial cooling water, is one of the important ways to solve the crisis of fresh water resources in coastal cities and regions. The pollution of industrial circulating water system is mainly caused by microorganisms. On the one hand, microorganisms cause direct pollution of water bodies; on the other hand, microorganisms in industrial circulating water bring great harm to equipment...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/63C07C209/00C07C209/84C07D213/20C07C217/20C07C213/08C07C213/10A01N33/12A01N43/40A01P1/00
CPCC07C211/63C07C209/00C07C209/84C07D213/20C07C217/20C07C213/08C07C213/10A01N33/12A01N43/40
Inventor 李涛刘伟王涛吴丹张辉黄西平张琦周筝李亚红
Owner 自然资源部天津海水淡化与综合利用研究所
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