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Method for preparing Igepon A series anionic surfactant

A surfactant and anion technology, applied in the field of organic compound synthesis, can solve the problems of high irritation, complicated operation process, reduce product irritation and inorganic salt content, etc., and achieve the effect of reducing irritation and inorganic salt content

Inactive Publication Date: 2008-04-09
BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The Igepon A series anionic surfactants contained in the technology provided by the invention are all superior to traditional methods in terms of product quality and performance, and overcome the need for processing of HCl in the present method, complicated operation process, raw material PCl 3 There are problems such as high irritation and environmental pollution, and the process of the present invention reduces the irritation and inorganic salt content of the product, which conforms to the principle of green chemistry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Add 0.1mol lauroyl chloride and 0.4mol lauric acid into a four-necked round bottom flask equipped with stirring, thermometer, long-necked dropping funnel, and reflux condenser. After fully stirring, add 0.45mol sodium isethionate, stir and reflux , be heated to 160 ℃, control reaction temperature constant, after reacting for 4 hours, separate a small amount of water and lauric acid, obtain the sodium lauryl ethyl sulfonate of 80% active matter content, product yield is 96%.

Embodiment 2

[0020] Add 0.1mol palmitoyl chloride and 0.5mol palmitic acid into a four-neck round bottom flask equipped with stirring, thermometer, long-necked dropping funnel, and reflux condenser. After fully stirring, add 0.5mol sodium isethionate, stir and reflux , be heated to 140 ℃, control reaction temperature constant, react after 6 hours, separate a small amount of water and palmitic acid, obtain the sodium palmityl ethyl sulfonate of active matter content 78%, product yield is 89%.

Embodiment 3

[0022] Add 0.1mol stearyl chloride and 0.3mol stearic acid into a four-necked round-bottomed flask equipped with stirring, thermometer, long-necked dropping funnel, and reflux condenser. After fully stirring, add 0.45mol sodium isethionate, and stir , reflux, heated to 155°C, controlled reaction temperature constant, after reacting for 5 hours, separated a small amount of water and stearic acid, obtained sodium stearyl ethyl sulfonate with 88% active matter content, and the product yield was 90%.

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PUM

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Abstract

The invention relates to a preparative method of anion surfactant of IgeponA series belongs to the technical field of organic compound synthesis. By mixing fatty acyl chloride, fatty acid and hydroxyethyl sodium dithionite, reacting in a normal-pressure reaction apparatus in a heated manner, the product is produced. The invention adopts a few HCI produced in the reaction as the catalyst to speed up the reaction and reduce the irritant property of the product as well as the contact of the organic salt. The odor and the color of the product are thin. With wide application range, the invention is consistent with the basic principle of green chemistry.

Description

technical field [0001] The preparation method of IgeponA series anionic surfactants, specifically the preparation method of IgeponA series anionic surfactants obtained by synthesizing fatty acid chlorides, fatty acids and sodium isethionate as raw materials, belongs to the technical field of organic compound synthesis. Background technique [0002] IgeponA series of anionic surfactants, chemical general formula RCOOCH 2 CH 2 SO 3 Na can be synthesized by esterification reaction of fatty acid and its derivatives with isethionic acid (sodium). Due to its good surface properties and biodegradability, compatibility with other surfactants, hard water resistance, affinity, and stability, it is widely used in various daily chemical products. [0003] IgeponA series of anionic surfactants are synthesized by the esterification route of fatty acid chlorides in China. The reaction formula is as follows: [0004] 3RCOOH+PCl 3 →3RCOCl+H 3 PO 3 [0005] RCOCl+HOCH 2 CH 2 SO 3 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C309/62C07C303/22B01F17/06C09K23/06
Inventor 徐宝财周雅文
Owner BEIJING TECHNOLOGY AND BUSINESS UNIVERSITY
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