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Quaternary ammonium salt cationic surfactant and preparation method thereof

A quaternary ammonium salt cation and surfactant technology, which is applied in the fields of botanical equipment and methods, preparation of carboxylic acid amides, chemical instruments and methods, etc. The effect of simple process, good sterilization ability and easy control of reaction conditions

Active Publication Date: 2015-05-13
北京晨晰环保工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing quaternary ammonium salt cationic surfactant has single function, and provides a kind of quaternary ammonium salt cationic surfactant and its preparation method

Method used

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  • Quaternary ammonium salt cationic surfactant and preparation method thereof
  • Quaternary ammonium salt cationic surfactant and preparation method thereof
  • Quaternary ammonium salt cationic surfactant and preparation method thereof

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specific Embodiment approach 1

[0024] Specific embodiment one: the quaternary ammonium salt cationic surfactant of the present embodiment, its chemical name is N-(alkylaminoacylmethyl)-N-[2-(2-phenoxyacetylamino)-ethyl]- N,N-Dimethylammonium chloride, the structural formula is:

[0025]

[0026] where R=C n h 2n+1 , n=8~22, X is chlorine element.

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment differs from Embodiment 1 in that n=12-18. Others are the same as method one.

specific Embodiment approach 3

[0028] Specific embodiment three: the preparation method of the described quaternary ammonium salt cationic surfactant of specific embodiment one, carry out according to the following steps:

[0029] 1. Add solvent I into the container, and then press the molar ratio of N'-(2-phenoxyacetyl)-N,N-dimethylethylenediamine to N-(chloroacetyl)alkylamine to be 1 : (0.8~6) Add N'-(2-phenoxyacetyl)-N,N-dimethylethylenediamine and N-(chloroacetyl)alkylamine, heat up to 60℃~180℃ and Stirring for 3h to 36h, the crude product was obtained;

[0030] 2. The crude product obtained in step 1 is rotary evaporated to obtain a viscous paste;

[0031] 3. Use solvent II to recrystallize the viscous paste to obtain a white solid, that is, a quaternary ammonium salt cationic surfactant.

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Abstract

The invention discloses a quaternary ammonium salt cationic surfactant and a preparation method thereof and relates to a cationic surfactant and a preparation method thereof. The quaternary ammonium salt cationic surfactant is used for solving the technical problem of single function of the existing quaternary ammonium salt cationic surfactant. The surfactant has a chemical name of N-(alkylaminoacylmethyl)-N-[2-(2- phenoxyacetylamino)-ethyl]-N, N-dimethyl ammonium chloride and has a structural formula as shown in the description, wherein R is equal to CnH(2n+1), n is between 8 and 22 and X is chlorine. The preparation method comprises the following steps: adding N'-(2-phenoxyacetyl)-N, N-dimethylethylenediamine and N-(chloroacetyl) alkylamine into a solvent, heating and reacting to obtain a crude product, concentrating and recrystallizing to obtain the purified surfactant. The surfactant has good killing effect on staphylococcus aureus, streptococcus, salmonella and escherichia coli and can be used in the fields of daily chemicals, pharmaceuticals and petrochemicals.

Description

technical field [0001] The invention relates to a quaternary ammonium salt cationic surfactant and a preparation method thereof. Background technique [0002] Due to its high surface activity, excellent adsorption and bactericidal properties, quaternary ammonium surfactants have been widely used in daily chemicals, food processing, agriculture and animal husbandry, pharmaceuticals, petrochemicals and other fields. Due to the continuous improvement of living standards and the rapid development of modern industry and agriculture, the world consumes a large amount of surfactants every day. This not only consumes a certain amount of oil and natural gas resources, but also causes a great burden on the natural environment. Therefore, exploring and synthesizing surfactants with high performance and using natural renewable resources as raw materials has become a research hotspot in the surfactant industry. In recent years, researchers have found that introducing certain functional...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C237/06C07C231/14C07C231/12B01F17/18A01N37/44A01P1/00C09K23/18
Inventor 贾丽华郭祥峰曹广州
Owner 北京晨晰环保工程有限公司
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