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Naphthol-derivative quaternary ammonium salt cationic surface active agent and preparing method thereof

A technology for quaternary ammonium salt cations and surfactants, which is applied in the field of quaternary ammonium salt cationic surfactants and their preparation, can solve the problems of low surface activity and high critical micelle concentration, and achieve simple preparation methods and lower critical micelle concentration , the effect of high surface activity

Active Publication Date: 2016-04-13
中德晨晰环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of high critical micelle concentration and low surface activity of existing quaternary ammonium salt cationic surfactants, and provides a naphthol derivative quaternary ammonium salt cationic surfactant and a preparation method thereof

Method used

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  • Naphthol-derivative quaternary ammonium salt cationic surface active agent and preparing method thereof
  • Naphthol-derivative quaternary ammonium salt cationic surface active agent and preparing method thereof
  • Naphthol-derivative quaternary ammonium salt cationic surface active agent and preparing method thereof

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specific Embodiment approach 1

[0022] Specific embodiment one: the chemical name of the naphthol derivative quaternary ammonium salt cationic surfactant of the present embodiment is N-alkylacylmethyl-N-[2-(2-naphthyloxyacetyl)-ethyl] -N,N-Dimethylammonium halide, its structural formula is:

[0023]

[0024] where R=C n h 2n+1 , n=8~22, X is a halogen.

specific Embodiment approach 2

[0025] Embodiment 2: This embodiment differs from Embodiment 1 in that n=12-18. Others are the same as method one.

specific Embodiment approach 3

[0026] Specific embodiment three: the preparation method of the naphthol derivative quaternary ammonium salt cationic surfactant described in specific embodiment one, carry out according to the following steps:

[0027] 1. Add the solvent I into the container, and then press the molar ratio of N-acetyl-(2-ethylnaphthyloxy)-N,N-dimethylethylenediamine and haloacetylalkylamine to be 1:(1 ~6) Add N-acetyl-(2-ethylenenaphthyloxy)-N,N-dimethylethylenediamine and haloacetylalkylamine, raise the temperature to 100℃~150℃ and stir for 24h~48h to obtain crude product;

[0028] 2. The crude product obtained in step 1 is rotary evaporated to obtain a viscous paste;

[0029] 3. Use solvent II to recrystallize the viscous paste to obtain a white solid, namely the naphthol derivative quaternary ammonium salt cationic surfactant.

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Abstract

The invention discloses a naphthol-derivative quaternary ammonium salt cationic surface active agent and a preparing method thereof, and relates to a quaternary ammonium salt cationic surface active agent and a preparing method thereof. The naphthol-derivative quaternary ammonium salt cationic surface active agent and the preparing method aim at solving the technical problems that an existing quaternary ammonium salt cationic surface active agent is high in critical micelle concentration and low in surface activity. The chemical name of the naphthol-derivative quaternary ammonium salt cationic surface active agent is N-alkyl acyl methyl-N-[2-(2-naphthyl oxethyl acetyl)-ethyl]-N,N-dimethyl ammonium halide, and the structural formula of the naphthol-derivative quaternary ammonium salt cationic surface active agent is shown in the specification. The preparing method includes the steps that a solvent, N-acetyl-(2-naphthyl oxethyl)-N,N-dimethyl ethylene diamine and halogen acetyl alkylamine are added into a reactor, heated, stirred and reacted, and the naphthol-derivative quaternary ammonium salt cationic surface active agent is obtained. The critical micelle concentration of the naphthol-derivative quaternary ammonium salt cationic surface active agent is 0.005-0.28 mmol / L, and the surface activity is high; in addition, the preparing method is simple, reaction conditions are easy to control, and the product is easy to separate and purify. The naphthol-derivative quaternary ammonium salt cationic surface active agent and the preparing method can be used for the fields of cosmetics, sterilization, pharmacy and petrochemical engineering.

Description

technical field [0001] The invention relates to a quaternary ammonium salt cationic surfactant and a preparation method thereof. Background technique [0002] Surfactants are characterized by amphiphilic molecules that contain both hydrophilic and hydrophobic groups. Due to its high surface activity and excellent adsorption performance, quaternary ammonium cationic surfactants have been widely used in cosmetics, sterilization, pharmaceuticals, petrochemicals and other fields. The traditional quaternary ammonium salt cationic surfactant has an alkyl hydrophobic group. In order to obtain a cationic surfactant with better performance, people have been working on the transformation of the quaternary ammonium salt structure, such as using benzyl chloride and dimethyl dodeca Dimethyldodecylbenzyl ammonium chloride synthesized by amine reaction is a typical cationic surfactant, but the surfactant has a high critical micelle concentration and low surface activity. Designing and sy...

Claims

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Application Information

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IPC IPC(8): B01F17/18B01F17/22B01F17/42C07C231/12C07C237/08C09K23/18C09K23/22C09K23/42
CPCC07C231/12C07C237/08C09K23/00
Inventor 贾丽华郭祥峰曹广州赵振龙尹建新宋柏
Owner 中德晨晰环保工程有限公司
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