Efficient zwitterionic gemini surfactant and synthesis method thereof

A gemini surface and synthesis method technology, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problem that surfactants are difficult to be popularized and used on a large scale, gemini surfactant varieties are limited, gemini surfactants Expensive and other issues, to achieve good calcium soap dispersibility, strong synergistic effect, high efficiency and ability

Inactive Publication Date: 2009-06-10
NANJING JINSHAN AUTOMOBILE ENG PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] At present, most of the betaine-based surfactants are single-chain, and there are few gemini-type surfactants, and the gemini surfactants produced abroad are expensive, and the types of gemini surfactants developed in China are very limited, making this type of surfactant difficult. be widely used

Method used

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  • Efficient zwitterionic gemini surfactant and synthesis method thereof
  • Efficient zwitterionic gemini surfactant and synthesis method thereof
  • Efficient zwitterionic gemini surfactant and synthesis method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0030] (1) Synthesis of N, N'-dimethylethylenediamine

[0031] Fix a 100ml three-neck flask with an iron stand in the DF-1 type heat collecting type constant temperature water bath magnetic stirrer, add 18.8g (0.1mol) 1,2-dibromoethane and 9.4g (o.3mol) content 30% Methylamine, then add 4.6g (0.1mol) of dehydrated alcohol, make 1,2-dibromoethane, methylamine fully mix in dehydrated alcohol, add 26.7g (0.67mol)30 in the dropping funnel % sodium hydroxide solution, install the dropping funnel with a stopper on the round bottom flask and fix it with an iron stand, turn on the power, adjust the stirring speed to 250 rpm, adjust the temperature to 40°C, and slowly add Sodium hydroxide solution, after 20 minutes of reaction, the solution in the round bottom flask turns into a milky white turbid liquid. After the sodium hydroxide solution is added dropwise, adjust the temperature to 55°C and react for 8 hours, and the solution in the round bottom flask turns into a light yellow trans...

Embodiment 2

[0038] (1) Synthesis of N, N'-dimethylethylenediamine

[0039] Fix a 100ml three-neck flask with an iron stand in the DF-1 type heat collecting type constant temperature water bath magnetic stirrer, add 18.8g (0.1mol) 1,2-dibromoethane and 9.4g (0.3mol) content of 30% Methylamine, add 4.6g (0.1mol) of dehydrated alcohol again, make 1,2-dibromoethane, methylamine fully mix in dehydrated alcohol, add 26.7g (0.67mol) content 30 in the dropping funnel % sodium hydroxide solution, install the dropping funnel with a stopper on the round bottom flask and fix it with an iron stand, turn on the power, adjust the stirring speed to an appropriate level, adjust the temperature to 40°C, and slowly add sodium hydroxide dropwise Solution, after 20 minutes of reaction, the solution in the round bottom flask turned into a milky white turbid liquid. After the sodium hydroxide solution was added dropwise, the temperature was adjusted to 60°C for 8 hours, and the solution in the round bottom flas...

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Abstract

The invention relates to a high-efficiency ampholytic gemini surfactant and a synthesis method thereof. The surfactant is N,N'-dimethyl carboxyl betaine which has the structural formula on the right. The surfactant has excellent water solubility, higher surface activity, good synergistic effect and other unique properties and can be widely applied in the various fields such as high-performance composite material, medicine and textile auxiliary agent.

Description

technical field [0001] The present invention relates to a kind of synthetic method of efficient amphoteric gemini surfactant Background technique [0002] Surfactant refers to a class of compounds that can significantly reduce the surface tension of water at a very low concentration. After reaching a certain concentration, they can associate to form micelles, thus having the functions of wetting or anti-sticking, emulsification or demulsification, foaming or A series of physical and chemical effects such as defoaming, solubilization, dispersion, washing, anticorrosion, antistatic and corresponding practical applications have become a class of flexible and versatile fine chemical products. Surfactants can be divided into amphoteric surfactants, gemini surfactants and betaine-based surfactants according to their structural characteristics. [0003] (1) Amphoteric surfactants [0004] Amphoteric surfactant is an important part of the whole surfactant. Amphoteric surfactants ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/18C09K23/18
Inventor 孙瑜汪家宝李文博吴锡忠
Owner NANJING JINSHAN AUTOMOBILE ENG PLASTIC
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