Carboxylate gemini surfactant and preparation method thereof

A technology of surfactant and gemini surface, applied in chemical instruments and methods, dissolving and drilling compositions, etc., can solve the problems of limited research results and few types, and achieve simple synthesis method, easy operation and high surface activity. Effect
CN101664657AInactive Publication Date: 2010-03-10QIQIHAR UNIVERSITY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
QIQIHAR UNIVERSITY
Publication Date
2010-03-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a carboxylate gemini surfactant and a preparation method thereof. The carboxylate gemini surfactant is benzene-1,4bis(N-beta- sodium acrylate-N- alkylamine). The synthesis method of the carboxylate gemini surfactant comprises three steps which are the ring-opening reaction, bromination and salt-forming reaction of maleic anhydride. The carboxylate gemini surfactant has theadvantages of high activity, a critical micelle concentration of 0.38mmol / L which is one twenty-fifth of that (908mmol / L) of sodium dodecylbenzenesulphonate, a surface tension under the critical micelle concentration of 31.8mN / m which is 7.4mN / m lower than that (39.2mN / m) of the sodium dodecylbenzenesulphonate, and expected application in daily chemical products such as detergent, solubilizer andemulsifier and an oil extraction formula system. The method has the advantages of mild product preparation reaction conditions, simple and convenient operation and easy product separation and purification.
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Description

technical field

[0001] The invention relates to a carboxylate gemini surfactant, and also relates to a preparation method of the gemini surfactant. Background technique

[0002] Gemini surfactants are a new type of surfactant with excellent performance. Its molecule contains two hydrophobic chains, two hydrophilic heads and a spacer. The spacer can be a flexible group or a rigid group. Compared with traditional surfactants, the critical micelle concentration cmc of gemini surfactants is much lower than that of monomers, and has higher surface activity and good solubilization, emulsification, wetting and dispersion effects. In particular, some gemini surfactants, such as carboxylate gemini surfactants, etc. also have another very prominent characteristic, that is, they can show some outstanding rheological properties at a relatively low concentration, such as viscoelasticity, Gel action and thickening phenomenon, such as carboxylate gemini surfactants, not only have good wat...

Claims

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