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Process for preparing didecyl dimethyl ammonium chloride

A didecyl dimethyl ammonium chloride, production process technology, applied in the field of preparation of didecyl dimethyl ammonium chloride, can solve the problem of limited production of didecyl dimethyl ammonium chloride, etc. problem, to achieve superior effect, simple process conditions and good effect

Active Publication Date: 2010-12-15
RUGAO WANLI CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the ideal disinfectant, bactericide, algaecide, preservative, and water blocking agent is didecyl dimethyl ammonium chloride. Due to process reasons, reaction conversion rate and color appearance, didecyl The production of dimethyl ammonium chloride is limited, which cannot meet the needs of applications

Method used

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  • Process for preparing didecyl dimethyl ammonium chloride
  • Process for preparing didecyl dimethyl ammonium chloride
  • Process for preparing didecyl dimethyl ammonium chloride

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 4.11mol of didecylmethyl tertiary amine into the reaction kettle, inhale 0.047mol of alkaline catalyst sodium carbonate, add 8.04mol of ethanol and stir; when heated to 75°C-95°C, open the methyl chloride addition valve to add The dosage is 4.21mol, and the condensing reflux system is turned on for condensing reflux. The addition temperature is between 75°C and 90°C. If the temperature rises, cooling water must be turned on to cool and lower the temperature. The pressure during the reaction shall not exceed 0.18MPa , react for 4.5 hours, after the reaction is completed, keep warm for 2.5 hours at 80°C to 90°C, then cool down and empty, and discharge the finished product for packaging. The analysis indicators are as follows:

[0016] Appearance: colorless transparent liquid

[0017] Content: 80.0%

[0018] PH value: 4.5

[0019] Free amine: 0.05%

[0020] Conformity.

Embodiment 2

[0022] Add 4.21mol of didecylmethyl tertiary amine into the reaction kettle, inhale 0.0475mol of alkaline catalyst sodium carbonate, add 8.14mol of ethanol and stir; when heated to 75℃~95℃, open the methyl chloride addition valve to add The dosage is 4.31mol, and the condensing and reflux system is turned on for condensing and reflux. The addition temperature is between 75°C and 90°C. If the temperature rises, cooling water must be turned on to cool and lower the temperature. The pressure during the reaction shall not exceed 0.18MPa , react for 5 hours, after the reaction is completed, keep warm for 2.5 hours at 80°C to 90°C, then cool down and empty, and discharge the finished product for packaging. The analysis indicators are as follows: The product indicators for this analysis are:

[0023] Appearance: colorless transparent liquid

[0024] Content: 80.4%

[0025] PH value: 6.2

[0026] Free amine: 0.85%

[0027] Conformity.

Embodiment 3

[0029] Add 4.31mol of didecylmethyl tertiary amine into the reaction kettle, inhale 0.048mol of alkaline catalyst sodium carbonate, add 8.24mol of ethanol and stir; after heating to 75℃~95℃, open the methyl chloride addition valve to add The dosage is 4.41mol, and the condensing reflux system is turned on for condensing reflux. The addition temperature is between 75°C and 90°C. If the temperature rises, cooling water must be turned on to cool and lower the temperature. The pressure during the reaction shall not exceed 0.18MPa , react for 5 hours, after the reaction is completed, keep warm for 2.5 hours at 80°C to 90°C, then cool down and empty, and discharge the finished product for packaging. The analysis indicators are as follows:

[0030] Appearance: colorless transparent liquid

[0031] Content: 82.0%

[0032] PH value: 7.5

[0033] Free amine: 0.98%

[0034] Conformity.

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Abstract

The invention relates to a process for preparing didecyl dimethyl ammonium chloride. The process for preparing the didecyl dimethyl ammonium chloride comprises the following steps of: dissolving the mixture of didecyl methyl tertiary amine and chloromethane in the molar ratio of 0.98-1.10:0.95-1.05 in an alcohol solvent; adding a catalyst; refluxing and reacting at the temperature of between 75 and 95 DEG C and under the reaction pressure of less than or equal to 0.18MPa for 4 to 6 hours; and preserving the heat for 2 to 3 hours at the temperature of between 80 and 90 DEG C after the reactionis finished. The process has the advantages of simple conditions, high reaction speed and capability of further improving the production capacity of the didecyl dimethyl ammonium chloride.

Description

technical field [0001] The invention belongs to the field of preparation of didecyl dimethyl ammonium chloride, in particular to a production process of didecyl dimethyl ammonium chloride. Background technique [0002] At present, in the field of chemical production, other substances that can be used as disinfectants, bactericides, algaecides, preservatives, and water blocking agents include: bactericides, dodecyldimethylbenzyl ammonium chloride, cetyl trimethyl ammonium bromide, cetyl pyridinium chloride, disinfectants include: quicklime, chlorine-containing disinfectants, sulfur-containing disinfectants, aldehyde disinfectants, etc. Some of the above substances are used as fungicides, and the effective time of disinfectants is short, and the dosage is relatively Large, the disinfection and sterilization effect is not very ideal. At present, the ideal disinfectant, bactericide, algaecide, preservative, and water blocking agent is didecyl dimethyl ammonium chloride. Due to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C211/63C07C209/12A01N33/12A01P1/00
Inventor 张捷
Owner RUGAO WANLI CHEM IND
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