Sulphobetaine ampholytic gemini surfactant and synthesis method thereof

A technology of sulfobetaine type and sulfobetaine, which is applied in the field of amphoteric gemini surfactants, can solve the problems of less research on sulfobetaine type gemini surfactants and limitations in the application of surfactants, and achieve easy separation, Excellent surface properties and mild reaction conditions

Inactive Publication Date: 2011-02-09
NORTHEAST GASOLINEEUM UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Although a certain amount of research has been done on amphoteric gemini surfactants at home and abroad, there are few studies on sulfobetaine-type gemini surfactants, which limits the application of this type of surfactants.

Method used

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  • Sulphobetaine ampholytic gemini surfactant and synthesis method thereof
  • Sulphobetaine ampholytic gemini surfactant and synthesis method thereof
  • Sulphobetaine ampholytic gemini surfactant and synthesis method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1、1

[0012] Embodiment 1, the synthesis of 1,2-two [N-methyl-N-(4-sulfobutyl)-tetradecyl ammonium] ethyl betaine gemini amphoteric surfactant: one, intermediate (N, The synthesis of N'-(two)tetradecyl-N, N'-dimethylethylenediamine): in a 250ml four-necked reaction flask equipped with a reflux condenser, a magnetic stirrer, a constant pressure dropping funnel, and a thermometer Add 0.2mol (8.00g) of sodium hydroxide and 100ml of absolute ethanol to the solution, after completely dissolving at 45°C, add 0.1mol (8.80g) of N,N'-dimethylethylenediamine to the reactor, and dissolve 0.2mol of (55.46g) bromotetradecane was added dropwise to the system and then heated to reflux for 48h. After the reaction, the system was cooled to room temperature, filtered to remove the solid, heated to 100°C for rotary evaporation under reduced pressure, filtered, added an appropriate amount of absolute ethanol, and repeated the above operation until no solid was precipitated to obtain the intermediate N,...

Embodiment 2

[0013] Example 2, the structural characterization of the target product: Table 1 GS14-4 1 H NMR spectrum analysis The above results indicated that the structure of the synthesized target product was consistent with the designed structure.

Embodiment 3

[0014] Example 3, Ross-Miles determination of GS 14-4 foam performance test: the test method is at a temperature of (45 ± 0.5) ° C, 200mL sample solution is flowed down from a pore with a height of 900mm and an inner diameter of 2.9mm, and washed Into 50mL sample solution with the same temperature and the same concentration, write down the foam height when the 200mL solution has flowed out as the evaluation index of the foaming ability of the tested sample, and the foam height at different moments after foaming is used as the evaluation index of foam stability. See the experimental results figure 1 .

[0015] Experiment is carried out to the foaming performance of amphoteric gemini surfactant GS 14-4 in embodiment 1, the result is as follows figure 1 As shown, as the concentration of GS 14-4 increases, the foam height gradually increases, but when the concentration is greater than 0.15%, the foam height hardly increases, indicating that the developed GS 14-4 has an average co...

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Abstract

The invention discloses a sulphobetaine ampholytic gemini surfactant. The surfactant is an N,N'-sulphobetaine compound. The invention discloses a preparation method for the surfactant at the same time. The preparation method comprises the following synthesis routes of: performing substitution reaction on aliphatic diamine and long-chain bromoalkane to generate an intermediate product, and performing quaternization reaction on the intermediate product and 1,3-propane sultone or 1,4-butane sultone to generate a target product. The sulphobetaine ampholytic gemini surfactant is systematically researched, the final product is synthesized, and the surfactant is specifically applied in solving the problem of little research on the surfactants; the target product has good surface performance, the critical micelle concentration of the target product is 2 to 3 magnitude orders lower than that of a corresponding single-chain surfactant, and the surface tension of the target product under the critical micelle concentration is 26.47mN / m and is far lower than that of the corresponding single-chain surfactant.

Description

technical field [0001] The invention relates to a gemini surfactant, in particular to an amphoteric gemini surfactant, and a synthesis method of the amphoteric gemini surfactant. Background technique [0002] Gemini surfactants are surfactants with a special structure of two hydrophobic chains, two hydrophilic groups and a linking group, and their synthesis and performance research has always been a research hotspot in the field of surfactant research. But at present the research of this type of active agent mainly focuses on the synthesis and performance research of cationic and anionic Gemini surfactants. and development direction [J]. Fine and Specialty Chemicals, 2008, 16(2): 14-19.) etc. respectively reviewed the synthesis and structure-activity relationship of these two types of Gemini surfactants, but the amphoteric Gemini surface There are few reports on the synthesis and performance research of active agents. In 2000, Menger et al. (Peresypkin A V, Menger F M. Zwi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/18C07C309/13C07C303/32C09K23/18
Inventor 曲广淼程杰成丁伟于涛魏继军董志龙袁丹丹栾和鑫
Owner NORTHEAST GASOLINEEUM UNIV
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