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Benzenesulphonate anionic gemini surfactant and preparation method thereof

A Gemini surface, benzene sulfonate technology, applied in sulfonate preparation, chemical instruments and methods, organic chemistry, etc., can solve the problems of surface activity limitation, inability to fully exert oil removal and decontamination ability, etc., to achieve surface activity Enhancement, excellent surface activity, good economic effect

Active Publication Date: 2013-06-12
BENGBU BBCA MEDICINE SCI DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The critical micelle concentration of this anionic surfactant is generally 10 -3 mol / L level, the surface activity is limited to a certain extent, and the ability of degreasing and decontamination cannot be fully exerted

Method used

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  • Benzenesulphonate anionic gemini surfactant and preparation method thereof
  • Benzenesulphonate anionic gemini surfactant and preparation method thereof
  • Benzenesulphonate anionic gemini surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Synthesis of Sodium Ethylenediamine N,N'-Diphenylsulfonate

[0035] Add 60g (1.0mol) of ethylenediamine and 20ml of water into a 1000ml three-necked reaction flask, heat to 45°C with stirring, and slowly add a saturated aqueous solution containing 536g (2.5mol) of sodium p-chlorobenzenesulfonate dropwise. After the dropwise addition, adjust the pH to 10.0 with sodium hydroxide, and keep stirring for 9 hours. After the reaction was completed, vacuum concentrated to remove about 50ml of water, and the remaining concentrated solution was added with absolute ethanol until cloudy, cooled and crystallized to obtain a white solid, ie sodium ethylenediamine N,N'-dibenzenesulfonate. Dry product weight: 346g, yield 83.2%.

[0036] Synthesis of Ethylenebis(N-Benzenesulfonic Acid-Lauramide) Sodium Salt

[0037] Dissolve 83.2g (0.2mol) of ethylenediamine N,N'-sodium dibenzenesulfonate in a mixed solution of 200ml distilled water and acetone with a volume ratio of 1:1, stir at 50°C...

Embodiment 2

[0039] Synthesis of Sodium Ethylenediamine N,N'-Diphenylsulfonate

[0040] Add 60g (1.0mol) of ethylenediamine and 20ml of water into a 1000ml three-necked reaction flask, heat to 40°C with stirring, and slowly add a saturated aqueous solution containing 643g (3.0mol) of sodium p-chlorobenzenesulfonate dropwise. After the dropwise addition, adjust the pH to 10.0 with sodium hydroxide, and keep stirring for 10 h. After the reaction was completed, vacuum concentrated to remove about 50ml of water, and the remaining concentrated solution was added with absolute ethanol until cloudy, cooled and crystallized to obtain a white solid, ie sodium ethylenediamine N,N'-dibenzenesulfonate. Dry product weight: 352g, yield 84.6%.

[0041] Synthesis of Ethylenebis(N-Benzenesulfonic Acid-Lauramide) Sodium Salt

[0042] Dissolve 83.2g (0.2mol) of ethylenediamine N,N'-sodium dibenzenesulfonate in a mixed solution of 200ml distilled water and acetone with a volume ratio of 1:1, stir at 50°C un...

Embodiment 3

[0044] Synthesis of Sodium Ethylenediamine N,N'-Diphenylsulfonate

[0045] Add 60g (1.0mol) of ethylenediamine and 20ml of water into a 1000ml three-necked reaction flask, heat to 50°C with stirring, and slowly add a saturated aqueous solution containing 428.7g (2.0mol) of sodium p-chlorobenzenesulfonate dropwise. After the dropwise addition, adjust the pH to 10.0 with sodium hydroxide, and keep stirring for 8 hours. After the reaction was completed, vacuum concentrated to remove about 50ml of water, and the remaining concentrated solution was added with absolute ethanol until cloudy, cooled and crystallized to obtain a white solid, ie sodium ethylenediamine N,N'-dibenzenesulfonate. Dry product weight: 328g, yield 78.8%.

[0046] Synthesis of Ethylenebis(N-Benzenesulfonic Acid-Lauramide) Sodium Salt

[0047] Dissolve 83.2g (0.2mol) of ethylenediamine N,N'-sodium dibenzenesulfonate in a mixed solution of 200ml distilled water and acetone with a volume ratio of 1:1, stir at 50...

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Abstract

The invention relates to a benzenesulphonate anionic gemini surfactant and a preparation method thereof. According to the invention, a basic structure with ethylenediamine as a spacer group is subject to a reaction with sodium parachloro benzenesulfonate, such that an intermediate containing two hydrophilic groups is obtained; and the intermediate is subject to a reaction with long-carbon-chain alkane acyl chloride, such that the benzenesulphonate anionic gemini surfactant is obtained. The surfactant is represented by the chemical structure below, wherein n=10, 12, 14, or 16.

Description

technical field [0001] The invention belongs to the field of fine chemicals, and in particular relates to a benzenesulfonate anionic gemini surfactant and a preparation method thereof. Background technique [0002] Gemini surfactants are a class of fine chemicals. The structural characteristics of this type of surfactant are: the molecular structure contains two (or more) hydrophilic groups and two (or more) lipophilic groups. This special structure makes gemini surfactants have a stronger ability to reduce interfacial tension than traditional surfactants, and the critical micelle concentration value is generally one or two orders of magnitude lower than traditional monad surfactants. It is a class of high-efficiency surfactants. agent. Currently, Gemini cations, Gemini anions and Gemini nonionic surfactants have been developed. Compared with traditional anionic surfactants, gemini anionic surfactants have lower critical micelle concentration (cmc) and better washing, oil...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C309/51C07C303/32B01F17/12B01F17/22C09K23/12C09K23/22
Inventor 韦亚锋汪洪湖刘慧敏张亚孙建华赵辉
Owner BENGBU BBCA MEDICINE SCI DEV