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Bialkyl quaternary ammonium salt bactericide and algicide, its preparation and application

A technology of dialkyl quaternary ammonium salt and bactericidal algaecide, which is applied in the field of dialkyl quaternary ammonium salt bactericidal algaecide, which can solve the problems of affecting the adsorption of negatively charged cells, reducing the effect of bactericidal and algae killing, and the consumption of biocides , to achieve the effect of simple dosing method, long sterilization duration and low dosage

Inactive Publication Date: 2005-01-26
RES INST OF BEIJING YANSHAN PETROCHEM
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0005] (3) The quaternary ammonium salt biocides currently used in circulating cooling water are mainly cationic, and the functional groups are positively charged. , the biocide is easily absorbed and consumed, reducing its activity, affecting its adsorption to negatively charged cells, and reducing the bactericidal and algae killing effect

Method used

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  • Bialkyl quaternary ammonium salt bactericide and algicide, its preparation and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Add 0.25 mol of tetradecyl tertiary amine, 0.25 mol of n-octane bromide and 75 mL of water into a four-necked flask equipped with a stirrer, reflux condenser and thermometer, raise the temperature to 90°C, and keep the temperature at 90-100°C for 6 hours to obtain Tetradecyl dimethyl octyl ammonium bromide aqueous solution 178 grams, the obtained solution is uniform, stable, transparent, non-layered, wherein the content of tetradecyl dimethyl octyl ammonium bromide is 60.53%, tetradecyl The yield of dimethyl octyl ammonium bromide was 99.3%.

Embodiment 2

[0030] Add 0.25 mol of hexadecyl tertiary amine, 0.25 mol of n-octane bromide and 68 mL of water into a four-necked flask equipped with a stirrer, reflux condenser and thermometer, raise the temperature to 90°C, and keep the temperature at 90-100°C for 4 hours to obtain 177 grams of cetyl dimethyl octyl ammonium bromide aqueous solution, the obtained solution is uniform, stable, transparent, non-layered, wherein the content of cetyl dimethyl octyl ammonium bromide is 64.11%, cetyl dimethyl octyl ammonium bromide The yield of dimethyl octyl ammonium bromide was 99.1%.

Embodiment 3

[0032] Add 0.25 mol of tetradecyl tertiary amine, 0.25 mol of brominated n-decane and 75 mL of water into a four-necked flask equipped with a stirrer, reflux condenser and thermometer, raise the temperature to 90°C, and keep the temperature at 90-100°C for 8 hours to obtain Tetradecyl dimethyl decyl ammonium bromide aqueous solution 184 grams, the obtained solution is uniform, stable, transparent, non-layered, wherein the content of tetradecyl dimethyl decyl ammonium bromide is 61.92%, tetradecyl The yield of dimethyldecylammonium bromide was 99.5%.

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Abstract

A dialkyl quaternary ammonium salt as disinfecting algicide is prepared from alamine, bromohydrocarbon (or halohydrocarbon) and water through thermal reaction, and features high disinfecting and algiciding power. It can be used for treating the circulated cooling water.

Description

technical field [0001] The present invention relates to a kind of dialkyl quaternary ammonium salt bactericidal algaecide, its preparation method and application thereof, more specifically, the present invention relates to the quaternary ammonium salt sterilizing agent containing two long carbon chain alkyl groups in one molecule at the same time Algal agent, its preparation method and its application. technical background [0002] In the circulating cooling water system, the growth of bacteria and algae and the resulting slime growth often bring hidden dangers to safe production. Adding an appropriate amount of bactericide and algicide to the circulating cooling water to control the growth of bacteria and algae is the most direct and effective way to solve the above problems. At present, the commonly used bactericides and algicides at home and abroad can usually be divided into two types: oxidizing and non-oxidizing. Oxidative bactericidal algicides mainly include chlorin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01N33/02
Inventor 郦和生王岽崔小明张春原郭红卫
Owner RES INST OF BEIJING YANSHAN PETROCHEM
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