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Quaternary ammonium salt and preparation thereof

A technology of quaternary ammonium salts and monohydric alcohols, which is applied in the field of quaternary ammonium salts and its preparation, using tertiary amines as raw materials to prepare quaternary ammonium salts, which can solve the problems of unsafe production, storage and transportation, human hazards, etc. The effect of convenient preparation

Inactive Publication Date: 2005-10-12
上海高维科技发展有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technologies disclosed in the above-mentioned patents all use low-boiling point alcohols or other solvents, such as C 1 ~C 4 Alcohol is used as the reaction medium, therefore, the product contains a small amount of low-boiling alcohol, and the menti

Method used

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  • Quaternary ammonium salt and preparation thereof
  • Quaternary ammonium salt and preparation thereof
  • Quaternary ammonium salt and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029] Put 30g cetyl alcohol and 114g trihexadecyl tertiary amine into the reaction vessel. 8.3g of methyl chloride was introduced, the reaction temperature was 100°C, the pressure was 196KPa (gauge pressure), and the reaction was carried out for 30 hours. The reaction is stopped to obtain a product, which is a white solid with an active content of 80.36%.

Example Embodiment

[0030] Example 2

[0031] Put 30g cetyl alcohol and 130g trihexadecyl tertiary amine into the reaction vessel. Pass in 9.5g of methyl chloride, reaction temperature 85℃, pressure 147KPa (gauge pressure), after 30 hours of reaction, add 30g of cetyl alcohol, continue the reaction for 10 hours, stop the reaction to obtain the product, the product is a white solid, the content of active matter It is 71.63%.

Example Embodiment

[0032] Example 3

[0033] 16 g of stearyl alcohol and 126 g of trihexadecyl tertiary amine were put into the reaction vessel. Pass in methyl chloride, a total of 9.2g. The reaction temperature is 100°C, the pressure is 98KPa (gauge pressure), after 30 hours of reaction, the reaction is stopped, and 8 g of stearyl alcohol is added to obtain the product, which is a white solid and the active content is 85.55%.

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Abstract

Production of quaternary ammonium salt is carried out by taking monobasic alcohol C10-C22 as reacting medium, adding compound with structural formula R4X into nitrilebase, and obtaining product. Its advantages include safe transportation and store, no poor stimulus for human body, easy dispersion in cool water, and convenient formulation.

Description

technical field [0001] The invention relates to a cationic surfactant and a preparation method thereof, in particular to a quaternary ammonium salt and a preparation method thereof, in particular to a method for preparing a quaternary ammonium salt with a tertiary amine as a raw material. Background technique [0002] Quaternary ammonium salt is a kind of surfactant and an important chemical raw material, especially widely used in daily chemical industry and textile field, and can be used as an active ingredient in hair, fabric softener or antistatic agent. [0003] At present, many patent documents disclose the method for preparing the quaternary ammonium salt shown in formula (1), such as: [0004] 1.USP Patent Num.5,696,292 Process for Producing Quarternary Ammonium Compounds. [0005] 2.USP Patent Num.5,545,749 Quaternary Ammonium Compounds with HighFlash And Method of Making The Same. [0006] 3.USP Patent Num.5,491,240 Quaternary Compound of A Tertiary AmineAnd Methy...

Claims

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Application Information

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IPC IPC(8): C07C209/00C07C211/63
Inventor 张未名周天国
Owner 上海高维科技发展有限公司
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