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Method for snthesizing isomery polyethenoxy ether carboxylate

A technology of polyoxyethylene ether carboxylate and polyoxyethylene ether, which is applied in the field of synthesis of anionic surfactants, can solve the problems of large equipment investment and many side reactions, and achieve simple equipment, less side reactions, and production process conditions mild effect

Inactive Publication Date: 2005-01-12
王伟松
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are defects such as large equipment investment and many side reactions during synthesis

Method used

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  • Method for snthesizing isomery polyethenoxy ether carboxylate
  • Method for snthesizing isomery polyethenoxy ether carboxylate
  • Method for snthesizing isomery polyethenoxy ether carboxylate

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Embodiment Construction

[0014] Add 160 parts of isomeric tridecyl alcohol polyoxyethylene ether in the reaction kettle, add 10 parts of sodium hydroxide ground into powder under stirring, 40 parts of acetone as the organic phase transfer catalyst, under the protection of nitrogen, control the reaction temperature 30 -35°C, reflux under reaction conditions for 5.0 hours. After the reflux, 28 parts of sodium chloroacetate and 12 parts of sodium hydroxide were slowly added, and the temperature was raised slowly after the addition. Under the protection of nitrogen, the temperature was controlled at 50-55°C, and the reaction time of heat preservation was 3.0 hours. After the reaction, add hydrochloric acid to neutralize to PH = 7.0-8.0, dry under reduced pressure to remove the water and acetone solvent, filter with hot ethanol to remove the salt, and then remove the ethanol to obtain isomeric tridecanol polyoxyethylene ether Carboxylate, the yield of its target product measured by rotating thin-layer chro...

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Abstract

Raw material iso-alcoholis polyoxyethyl ester reacts with sodium hydroxide under the function of organic trans-catalyst to proceed alkalization, then feeding sodium chloroacetate to proceed carboxyl reaction under alkali catalyst, finally, de-salted by organic solvent, filtration, refined to obtain iso-alcoholic polyoxy ether arboxylate. Advantages are: simple process, less side reaction, high yield, and said product can be used in washing, textile, printing and dyeing, leather and chemical fiber.

Description

technical field [0001] The invention relates to a method for synthesizing isomeric alcohol polyoxyethylene ether carboxylate, which belongs to the technical field of anionic surfactant synthesis. Background technique [0002] Isomerized alcohol polyoxyethylene ether carboxylate is a new type of anionic surfactant. Due to its special isomeric molecular structure, the end of the polyoxyethylene bond has a hydrophilic carboxyl group, which makes it have excellent chemical stability. Safety and security, while being gentle on the skin. Compared with fatty alcohol polyoxyethylene ether carboxylate, due to its structural isomerism, it is superior to fatty alcohol polyoxyethylene in terms of surface tension, critical micelle concentration, wetting, emulsification, and decontamination. ether carboxylate (AEC). Compared with fatty alcohol polyoxyethylene ether sulfate, the production conditions of isomeric alcohol polyoxyethylene ether carboxylate are mild, wh...

Claims

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Application Information

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IPC IPC(8): C07C51/295C07C59/60
Inventor 王伟松
Owner 王伟松
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