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Preparation method of ethylene glycol gemini di-isooctyl succinate sodium sulfonate

A technology of sodium diisooctyl sulfosuccinate and ethylene glycol bis, which is applied in the direction of sulfonate preparation, organic chemistry, etc., can solve the problems of no literature reports, achieve short reaction time, easy operation, reduce impurities and The effect of equipment utilization

Inactive Publication Date: 2013-12-18
NANTONG UNIVERSITY
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

Using ethylene glycol, maleic anhydride and isooctyl alcohol as raw materials to prepare sodium ethylene glycol diisooctyl succinate, there is no literature report on this product

Method used

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  • Preparation method of ethylene glycol gemini di-isooctyl succinate sodium sulfonate
  • Preparation method of ethylene glycol gemini di-isooctyl succinate sodium sulfonate
  • Preparation method of ethylene glycol gemini di-isooctyl succinate sodium sulfonate

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Embodiment Construction

[0021] A preparation method of ethylene glycol diisooctyl succinate, comprising the following steps: the first step of monoesterification reaction (I), by weighing the ratio of maleic anhydride to ethylene glycol molar ratio of 2.1:1.0, Ethylene glycol and maleic anhydride are added in the reactor that is equipped with stirrer, thermometer and reflux condenser, add and account for 1% catalyst carbon-based solid acid of maleic anhydride quality (in beaker by m (p-toluenesulfonic acid): m (starch )=1:2 Add soluble starch and p-toluenesulfonic acid, heat and dissolve with distilled water. After the solution is clear and transparent, cool to room temperature, evaporate into a viscous colloid with a rotary evaporator, put it in a muffle furnace and carbonize at 200°C for 8 hours Grind and pass through a 80-mesh sieve to obtain a carbon-based solid acid catalyst.) Introduce nitrogen, stir and heat up to 100°C within 10 minutes and time, keep the temperature at 100°C±2°C for 4 hours, ...

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Abstract

The invention discloses a preparation method of ethylene glycol gemini di-isooctyl succinate sodium sulfonate. The preparation method comprises the steps that maleic anhydride and two hydroxy groups on ethylene glycol are bonded to carry out mono-esterification reaction to generate ethylene glycol monoester dimaleate; then ethylene glycol monoester dimaleate and isooctyl alcohol carry out di-esterification reaction to obtain ethylene glycol di-isooctyl dimaleate; finally ethylene glycol di-isooctyl dimaleate and sodium hydrogen sulfite carry out conjugate addition sulfonation reaction to prepare a product, wherein a catalyst for mono-esterification reaction is a carbon-based solid acid and directly serves as a catalyst for di-esterification reaction after mono-esterification. The method is easy to operate, is simple and convenient and has good environment friendliness.

Description

technical field [0001] The invention relates to a preparation method of diisooctyl sodium ethylene glycol gemini succinate. Background technique [0002] Ethylene glycol gemini dioctyl sodium sulfosuccinate is designed in the molecule to use the single-chain surfactant sulfosuccinate isooctyl sodium salt as the ion head of the amphiphile molecule, which is connected by a linking group ethylene glycol through a chemical bond Gemini surfactants. In addition to all the advantages of single-chain surfactants, its surface activity also has lower surface tension, that is, higher surface activity. Due to its special structure and unique performance, it is widely used. Using ethylene glycol, maleic anhydride and isooctyl alcohol as raw materials to prepare sodium ethylene glycol diisooctyl succinate, this product has no literature reports at present. Contents of the invention [0003] The object of the present invention is to provide a kind of preparation method that is easy to...

Claims

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Application Information

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IPC IPC(8): C07C309/17C07C303/32
Inventor 江国庆华平喻红梅李建华施磊鞠剑峰戴宝江方略韬张海滨
Owner NANTONG UNIVERSITY
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