Production process of high-quality fatty alcohol polyoxyethylene ether sulfate

An alcohol polyoxyethylene ether and production process technology, applied in the preparation of sulfate, organic chemistry and other directions, can solve the problems of high AEO content, unstable sulfonation reaction, product decomposition, etc., and achieve good color and luster, stable sulfonation process, Stabilizing effect of sulfonation reaction

Active Publication Date: 2018-04-17
河南赞宇科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, most sulfonation processes use gaseous SO 3 In the membrane sulfonation method, as the reaction progresses during the sulfonation process, the initial viscosity of the reaction system rises sharply from 0.1Pa.s to 1.2Pa.s. The viscosity problem causes great resistance to the gas-liquid sulf

Method used

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  • Production process of high-quality fatty alcohol polyoxyethylene ether sulfate
  • Production process of high-quality fatty alcohol polyoxyethylene ether sulfate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] (1) Pre-add 0.1% stearic acid by mass in AEO and dissolve in advance.

[0023] (2) AEO that is dissolved with stearic acid, according to the sulfonation production process of existing fatty alcohol polyoxyethylene ether sulfate, in existing gas phase SO 3 Sulfonation is carried out on a membrane sulfonation device;

[0024] (3) After sulfonation, the ester directly enters the vacuum neutralization system without aging, and produces fatty alcohol polyoxyethylene ether sodium sulfate according to the existing neutralization process. The obtained product quality index is as follows

[0025]

[0026]

Embodiment 2

[0028] (1) Pre-add 0.2% lauric acid in total mass to AEO and dissolve in advance.

[0029] (2) AEO that is dissolved with lauric acid, according to the sulfonation production process of existing fatty alcohol polyoxyethylene ether sulfate, in existing gas phase SO 3 Sulfonation is carried out on a membrane sulfonation device;

[0030] (3) After sulfonation, the ester directly enters the vacuum neutralization system without aging, and produces fatty alcohol polyoxyethylene ether sodium sulfate according to the existing neutralization process. The obtained product quality index is as follows

[0031] project

Embodiment 3

[0033] (1) Add 0.3% of total mass of methyl laurate into AEO in advance and dissolve in advance.

[0034] (2) AEO that is dissolved with methyl laurate, according to the sulfonation production process of the existing fatty alcohol polyoxyethylene ether sulfate, in the existing gas phase SO 3 Sulfonation is carried out on a membrane sulfonation device;

[0035] (3) The acid ester after sulfonation does not need to be aged, and directly enters the vacuum neutralization system to produce fatty alcohol polyoxyethylene ether sodium sulfate according to the existing neutralization process. The obtained product quality index is as follows

[0036] project

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Abstract

The invention belongs to the technical field of fine chemicals. The invention aims at providing a production process of a high-quality fatty alcohol polyoxyethylene ether sulfate with high content ofactive matters, light color and low dioxane residues; and simultaneously, the process flow is simple and can be conveniently realized on an existing production device of the fatty alcohol polyoxyethylene ether sulfate without changing sulfonation equipment. The technical scheme is as follows: the production process of the high-quality fatty alcohol polyoxyethylene ether sulfate comprises the following steps: 1) pre-dissolving an appropriate amount of sulfonation stabilizer in fatty alcohol polyoxyethylene ether; 2) sulfonating the fatty alcohol polyoxyethylene ether pre-dissolved with the sulfonation stabilizer on an existing vapor phase SO3 film type sulfonation device according to an existing sulfonation production process of the fatty alcohol polyoxyethylene ether sulfate; and 3) enabling an sulfonated acid ester to directly enter a neutralization system without aging and producing the fatty alcohol polyoxyethylene ether sulfate according to an existing neutralization process.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a production process for producing fatty alcohol polyoxyethylene ether sodium sulfate with low dioxane content, high active substance content and light color. Background technique [0002] Fatty alcohol polyoxyethylene ether sulfate has excellent wetting, decontamination, emulsification and foaming properties, good thickening effect, wide compatibility and good biodegradability, and is widely used in liquid detergents, such as dish washing and shampooing Shampoo, bath liquid, etc., also used as wetting agent, dyeing aid, foaming agent, degreasing agent, etc. in textile printing and dyeing, petroleum, leather, building materials and other industries. [0003] Fatty alcohol polyoxyethylene ether sulfate is an anionic surfactant product obtained by sulfonating and neutralizing fatty alcohol polyoxyethylene ether (AEO). At present, most sulfonation processes use g...

Claims

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Application Information

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IPC IPC(8): C08G65/326C07C303/24C07C305/10
CPCC07C303/24C08G65/326C07C305/10
Inventor 史立文华文高楼东平张义勇杨春良
Owner 河南赞宇科技有限公司
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