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Method for preparing disodium ethylene glycol bis(2-ethyl-1-butyl)sulfosuccinate

A bis-sulfosuccinic acid, ethylene glycol double technology, applied in the direction of sulfonate preparation, organic chemistry, etc., can solve the problems of no literature reports, etc., achieve the effects of short reaction time, cost saving, and reduction of equipment requirements

Inactive Publication Date: 2013-05-15
临沂小豆娃食品有限公司
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  • Summary
  • Abstract
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Problems solved by technology

[0003] Take ethylene glycol, maleic anhydride and 2-ethyl-1-butanol as raw material to prepare ethylene glycol bis-sulfosuccinic acid bis (2-ethyl-1-butyl) ester sodium and there is no bibliography at present

Method used

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  • Method for preparing disodium ethylene glycol bis(2-ethyl-1-butyl)sulfosuccinate
  • Method for preparing disodium ethylene glycol bis(2-ethyl-1-butyl)sulfosuccinate

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Embodiment Construction

[0021] A kind of preparation method of di(2-ethyl-1-butyl) sodium ethylene glycol bissulfosuccinate, comprises the following steps: the first step monoesterification reaction, by maleic anhydride and ethylene glycol molar ratio Take ethylene glycol and maleic anhydride in the ratio of 2.1: 1.0 and add them to the reaction kettle equipped with stirrer, thermometer and reflux condenser, then add the carbon-based solid acid catalyst (carbon-based solid acid catalyst) that accounts for 2% of the maleic anhydride mass. The preparation method of acid catalyst: add soluble starch and p-toluenesulfonic acid in beaker by m (p-toluenesulfonic acid): m (starch)=1: 2, heating dissolves with distilled water. Treat that solution is clear and transparent, cool to room temperature, use Rotary evaporator evaporated into a viscous colloid, placed in a muffle furnace and carbonized at 200 ° C for 8 h. Grinding, sieving through an 80-mesh sieve to obtain a carbon-based solid acid catalyst), nitrog...

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Abstract

The invention discloses a method for preparing disodium ethylene glycol bis(2-ethyl-1-butyl)sulfosuccinate. The method comprises the following steps of: combining maleic anhydride and two hydroxyl radicals on ethylene glycol to perform mono-esterification to obtain ethylene glycol bis(monomaleate); performing di-esterification on the ethylene glycol bis(monomaleate) and 2-ethyl-1-butanol to obtain ethylene glycol bis(2-ethyl-1-butyl) dimaleate; and performing conjugate addition on the ethylene glycol bis(2-ethyl-1-butyl) dimaleate and sodium hydrogensulfite to obtain the product, wherein whenthe maleic anhydride is reacted with the ethylene glycol, a carbon-based solid acid catalyst is adopted. The method is simple, and easy to implement; the consumption of raw materials is reduced; the cost is saved, and impurities of the product are reduced.

Description

technical field [0001] The invention relates to a preparation method of bis(2-ethyl-1-butyl) sodium ethylene glycol bissulfosuccinate. Background technique [0002] Di(2-ethyl-1-butyl) sodium ethylene glycol bissulfosuccinate is a single-chain surfactant designed in the molecule (2-ethyl-1-butyl) sodium sulfosuccinate The salt acts as the ionic head of two amphiphilic molecules, and the gemini surfactant is formed by connecting the linking group ethylene glycol through a chemical bond. In addition to all the advantages of traditional surfactants with a single alkane chain and a single ion head, its surface activity also has a lower surface tension, that is, a higher surface activity. Due to its special structure and unique performance, it is more widely used. For example, in addition to being used as high-efficiency detergents, emulsifiers, high-efficiency solubilizers, emulsions and foam stabilizers, viscosity enhancers, etc. in the conventional field, they are also used ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/17C07C303/32
Inventor 华平喻红梅李建华戴宝江施磊朱国华石玉军方略韬叶俊单佳慧
Owner 临沂小豆娃食品有限公司