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Preparation method of surfactant

A surfactant and catalyst technology, applied in the field of daily chemicals, can solve the problems of insufficient green raw materials, "three wastes" discharge, low yield, etc., and achieve the advantages of improving application convenience, reducing use and emission, and facilitating industrial production Effect

Inactive Publication Date: 2020-04-07
ZHANGJIAGANG GREAT CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The above research methods, except for the industrialized acid chloride method, basically have the problems of poor reaction selectivity and low reaction conversion rate, which lead to difficulties in separation and purification and low yields.
At present, the synthesis process of acyl amino acid salt by acyl chloride method is relatively mature, with good selectivity and high conversion rate, but there are also problems such as insufficient green raw materials, long process, and serious discharge of "three wastes" during the purification process, which limits its rapid development. Development and Application Areas

Method used

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  • Preparation method of surfactant
  • Preparation method of surfactant
  • Preparation method of surfactant

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Experimental program
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Effect test

Embodiment 1

[0041] The preparation method of the surfactant of the present embodiment, the steps are as follows:

[0042] Add 0.1 mol of dodecyl alcohol, 0.15 mol of sodium methyl taurate, and 0.013 g of manganese acetate into the reactor, close the reactor, slowly raise the temperature to 210°C, keep the temperature for 4 hours, connect to vacuum, and the vacuum degree is -0.08 ~-0.09MPa, degas for 2 hours, adjust the pH value at 6.5~7.5, filter to obtain a light yellow solid product, and the conversion rate of dodecyl alcohol is 91.4%.

Embodiment 2

[0044] The preparation method of the surfactant of the present embodiment, the steps are as follows:

[0045] Add 0.1 mol of tetradecyl alcohol, 0.12 mol of potassium taurate, 0.02 g of manganese acetate, and 0.01 g of ferric oxide into the reactor, close the reactor, slowly raise the temperature to 260°C, keep the temperature for 3 hours, and connect to the vacuum , vacuum degree -0.08~-0.09MPa, degas for 2 hours, adjust the pH value at 6.5~7.5, add water to adjust the solid content to 30.5%, filter to obtain a light yellow transparent liquid product, and the conversion rate of myristyl alcohol is 93.2%.

Embodiment 3

[0047] The preparation method of the surfactant of the present embodiment, the steps are as follows:

[0048]0.1mol lauryl alcohol, 0.1mol tetradecyl alcohol, 0.08mol sodium methyl taurate, 0.1mol sodium taurate, 0.025 gram manganese acetate are added in the reactor, and the airtight reactor is slowly heated up to 200°C, heat preservation reaction for 6 hours, connect to vacuum, vacuum degree -0.08~-0.09MPa, degas for 2 hours, adjust the pH value at 6.5~7.5, filter to obtain a light yellow solid product, and the conversion rate of fatty alcohol is 88.1%.

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Abstract

The invention discloses a preparation method of a surfactant. The preparation method comprises the following steps: adding fatty alcohol, a catalyst and an amino acid salt into a reactor; closing thereactor, and slowly heating to 200-300 DEG C; carrying out a thermal insulation reaction for 2-10 hours; degassing; and treating to obtain a finished product. According to the method, fatty alcohol and amino acid salt are selected and are subjected to a direct reaction, impurities such as chlorine ions and the like are not introduced in the process, and the target product is obtained through the direct reaction, so that the steps of acidification, salification or water washing desalination are omitted, and the use and the discharge of salt-containing wastewater or an organic solvent are reduced; and the original multi-step reaction is changed, the product is obtained through a one-step reaction, and no toxic or harmful solvent is used, so that the operation is convenient, the industrial production is easy to achieve, the product form of the prepared product can also be changed according to actual requirements, and the cost advantage and the application convenience advantage of the product are improved.

Description

technical field [0001] The invention belongs to the technical field of daily chemicals, and in particular relates to a preparation method of a surfactant. Background technique [0002] Surfactant is a class of active materials that can significantly change all surface / interface properties. By changing the interface state of the system, it has the functions of wetting or anti-sticking, emulsification or demulsification, foaming or defoaming, and solubilization and dispersion. A series of physical and chemical effects and corresponding practical applications, such as washing, anti-corrosion, anti-static, etc., are widely used in all walks of life in the development of the national economy, and are known as "industrial monosodium glutamate". In the industrial transformation period when human beings are facing resource, energy, and water crisis, the sustainable development of surfactants is very important for the healthy development of surfactants themselves and the development ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C303/32C07C309/15B01F17/24C09K23/24
CPCC07C303/32C09K23/00
Inventor 朱红军徐由江郭静波崔宜斌陈叶礼朱志乾臧涛涛
Owner ZHANGJIAGANG GREAT CHEM