Microwave synthesis method of sodium fatty acyloxy isethionate

A technology of sodium fatty acyloxyethylsulfonate and sodium isethionate, which is applied in the fields of sulfonate preparation, chemical instruments and methods, organic chemistry, etc., and can solve the problem of light color of sodium fatty acyloxyethylsulfonate, Phosphorus trichloride irritating environment, low reaction temperature and other problems, to achieve the effect of short reaction time at high temperature, reduced energy consumption, and good quality

Inactive Publication Date: 2011-09-14
ZANYU TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Taking fatty acyl chloride as the preparation method of raw material, because reaction temperature is lower, obtain fatty acyloxyethyl sulfonate sodium color and luster is lighter; But also there are many problems, need to deal with as by-product hydrogen chloride; Phosphorus trichloride has irritation and environment pollution problem
[0005] The production method using fatty acids as raw materials, although the reaction temperature is high and the conversion rate is low, but the raw materials are easy to obtain, the process is simple, and there is no three waste pollution, and the existence of some fatty acids in the product does not affect its application in toilet soap. The main method of producing sodium fatty acyloxyethyl sulfonate

Method used

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  • Microwave synthesis method of sodium fatty acyloxy isethionate
  • Microwave synthesis method of sodium fatty acyloxy isethionate
  • Microwave synthesis method of sodium fatty acyloxy isethionate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Add 50.0g of sodium isethionate and 92.2g of coconut oleic acid into a special microwave reaction flask, put it into a microwave reactor, connect the vacuum system, temperature measurement system, and stirring system, turn on the microwave and raise the temperature to 190°C and the pressure to 100KPa After keeping the microwave power 150W to react for 30min, pour out and place in a vacuum desiccator to cool and just obtain the finished product sodium cocoyl oxyethyl sulfonate 132.2g.

[0024] The resulting quality indicators are as follows:

[0025]

[0026] It can be seen that the product quality obtained by the present invention is obviously better than the traditional technology.

Embodiment 2

[0028] Add 50.0g of sodium isethionate and 87.8g of lauric acid into a special microwave reaction flask, put it into the microwave reactor, connect the temperature measurement system and the stirring system, and pass N 2 Bubbling, the bubbling speed is 70 bubbles / min; turn on the microwave and heat up to 190°C, keep the microwave power at 150W and react for 30 minutes, pour it out and put it in a vacuum desiccator to cool to get the finished sodium laurate acyloxyethylsulfonate 130.2g .

[0029] The resulting quality indicators are as follows:

[0030]

[0031] It can be seen that the product quality obtained by the present invention is obviously better than the traditional technology.

Embodiment 3

[0033] Add 50.0g of sodium isethionate and 100g of myristic acid into a special microwave reaction flask, put it into a microwave reactor, connect a vacuum system, a temperature measurement system, and a stirring system, and turn on the microwave to raise the temperature to 195°C and the pressure to 100KPa; After keeping the microwave power at 150W for 30 minutes, pour it out and place it in a vacuum desiccator to cool to obtain 140 g of the finished sodium myristate acyloxyethylsulfonate.

[0034] The resulting quality indicators are as follows:

[0035]

[0036] It can be seen that the product quality obtained by the present invention is obviously better than the traditional technology.

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Abstract

The invention relates to a microwave synthesis method of sodium fatty acyloxy isethionate. The method provided by the invention has the characteristics of good product quality, simple processing equipment and low energy consumption. The technical scheme is as follows: the method sequentially comprises the following steps: 1. putting fatty acid and sodium isethionate into a special reaction bulb for microwaves in a mol ratio of 1:(1.0-1.3), heating to 180-200 DEG C by microwaves, reacting under the pressure of 10-100KPa for 30-60 minutes, and removing water generated in the reaction process by introducing nitrogen or vacuumizing; and 2. cooling the reaction product, and slicing to obtain the sodium fatty acyloxy isethionate. The fatty acid is a C8-C20 fatty acid or mixture thereof. In the reaction process, the N2 is introduced for protection and dewatering; and by using the number of bubbles as the counting unit, the flow rate of the N2 is 60-120 bubbles / min.

Description

technical field [0001] The invention relates to a preparation method of a surfactant, in particular to a microwave synthesis method of sodium fatty acyloxyethyl sulfonate. Background technique [0002] Sodium fatty acyloxyethyl sulfonate (trade name Igepon A), is an anionic surfactant; it has low surface tension, excellent decontamination, foaming and wettability, and hard water resistance and calcium soap dispersibility, At the same time, it also has good skin compatibility, mild cleaning performance, easy biodegradability, and no environmental burden. Therefore, it can be applied to the production of daily chemical products such as soap, shower gel, facial cleanser, foam face wash and body wash, and has a wide application prospect. [0003] Sodium fatty acyloxyethylsulfonate can be prepared by reacting fatty acid chloride or fatty acid with sodium isethionate. [0004] Taking fatty acyl chloride as the preparation method of raw material, because reaction temperature is l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/12C07C303/32B01F17/06C09K23/06
Inventor 史立文葛赞周大鹏冯耀平郭霞
Owner ZANYU TECH GRP CO LTD
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