Method for preparing high-concentration polyoxy alkyl allyl ether sulfonate

A technology of polyoxyalkylene ether sulfonate and polyoxyalkylene ether, which is applied in the field of preparation of high-concentration polyoxyalkylene ether sulfonate, can solve the problem of uncertain industrial application prospects, inability to obtain high-activity products, It cannot solve the problems of mass transfer and heat transfer, and achieve the effects of suppressing side reactions of hydrolysis, easy separation, and short process flow

Active Publication Date: 2012-07-04
TAIXING LINGFEI CHEM TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Zhao Fulin et al. (Fine Petrochemical Industry, 1996(5): 22~24) used water as a solvent at 196 °C to synthesize fatty alcohol polyoxyethylene ether sulfate from fatty alcohol polyoxyethylene ether sulfate through sulfite conversion. , the yield is only 62%, and the maximum concentration of fatty alcohol polyoxyethylene ether sulfate in the reactant can only be 14.0%, otherwise the material is viscous, and chemical problems such as mass transfer and heat transfer cannot be solved.
CN 101255127A discloses a method for synthesizing the target product of fatty alcohol polyoxyethylene ether sulfonate by using fatty alcohol polyoxyethylene ether sulfate in the aqueous phase. Although it claims to obtain a higher yield than the above-mentioned literature reports such as Zhao Fulin, but It also cannot solve chemical problems such as material viscosity at high concentrations, difficulty in mass and heat transfer, so it can only be reacted at a low concentration of less than 26%, and high-activity products cannot be obtained.
Therefore, although the sulfite sulfonation process of directly converting alcohol ether sulfate to synthesize alcohol ether sulfonate has attracted research interest, it has not yet solved chemical problems such as material viscosity at high concentrations, and difficulty in mass and heat transfer. , making the prospect of industrial application of this process route unclear

Method used

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  • Method for preparing high-concentration polyoxy alkyl allyl ether sulfonate
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  • Method for preparing high-concentration polyoxy alkyl allyl ether sulfonate

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Implementation example 1: In a 1 L autoclave was added 210 g lauryl polyoxyethylene (3) sodium sulfate, 252 g Na 2 SO 3 , 60 g dodecane, 60 g water, 15 g pentanol, the reaction temperature is 190-195 ℃, the reaction time is 6 h, take it out after cooling, filter out the precipitated inorganic salt, and obtain dodecanol polyoxyethylene ( 3) Sodium sulfonate product, the measured hydrolysis rate is 12%, the sulfonation rate is 87%, and the concentration of sodium lauryl polyoxyethylene (3) ether sulfonate in the obtained reaction product is 53%. Its infrared spectrum is attached figure 1 As shown, it indicates that the raw material lauryl polyoxyethylene (3) sodium sulfate in the microemulsion phase has been completely converted.

Embodiment 2

[0028] Implementation Example 2: Add 210 g of n-octanol polyoxyethylene ether (50) sodium sulfate and 86 g of Na in a 1 L autoclave 2 SO 3 , 46 g cyclohexane, 160 g water, 11 g propanol, the reaction temperature is 160-165 ℃, the reaction time is 3 h, take it out after cooling, filter out the precipitated inorganic salt, obtain n-octanol polyoxyethylene ether (50) Sodium sulfonate product, the measured sulfonation rate is 85%, the hydrolysis rate is 9%, and the concentration of sodium n-octanol polyoxyethylene ether (50) sulfonate in the obtained reaction product is 41%.

Embodiment 3

[0029] Implementation Example 3: In a 1 L autoclave was added 210 g isooctanol polyoxyethylene ether (5) ammonium sulfate, 160 g (NH 4 ) 2 SO 3 , 100 g tetradecane, 22 g water, 30 g hexanol, the reaction temperature is 170-175 ℃, the reaction time is 6 h, take it out after cooling, filter out the precipitated inorganic salt, obtain isooctanol polyoxyethylene ether (5) Ammonium sulfonate product, the measured sulfonation rate is 86%, the hydrolysis rate is 11%, and the concentration of isooctanol polyoxyethylene ether (5) ammonium sulfonate in the obtained reaction product is 50%.

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Abstract

The invention relates to a method for preparing high-concentration polyoxy alkyl allyl ether sulfonate, which belongs to the technical field of organic compound synthesis. In the method provided by the invention, the polyoxy alkyl allyl ether sulfonate of fatty alcohol or alkylphenol is used as raw materials to be directly sulfonated in a microemulsion system through sulphite for obtaining the polyoxy alkyl allyl ether sulfonate. Compared with the traditional water-phase system, the method provided by the invention has the advantages that through building a reaction system into microemulsion,the material concentration in the reaction system and the yield of polyoxy alkyl allyl ether sulfonate surface active agents are greatly improved, the generation of hydrolysates of polyoxy alkyl allyl ether is reduced, the product yield of the preparation method is high, byproducts are few, the cost is low, the process is simple, and the polyoxy alkyl allyl ether sulfonate products with high active substance contents can be obtained.

Description

Technical field [0001] The invention relates to a method for preparing high-concentration polyoxyalkylene ether sulfonate, and belongs to the technical field of organic compound synthesis. Background technique [0002] Polyoxyalkylene ether sulfonate surfactants belong to anionic-nonionic surfactants, which have excellent salt resistance, dispersing performance and compatibility; more importantly, this kind of surfactants is used in strong acid, strong alkali, high temperature It still has excellent stability under extreme high-pressure environments, and can be widely used in applications with special needs such as petroleum, papermaking, textile, industrial and special cleaning. [0003] There are many preparation methods for polyoxyalkylene ether sulfonate surfactants, which can be roughly divided into propane sultone method, sulfoalkylation method, olefin addition method and sulfite sulfonation method, etc., but most of these preparation methods There are problems such as high ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/32C07C309/10C07C309/04C08G65/00
Inventor 方云张丽萍杨铭夏咏梅
Owner TAIXING LINGFEI CHEM TECH CO LTD
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