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Preparation and purification methods of quaternary ammonium salt type dimeric surfactant

A gemini surface and purification method technology, applied in chemical instruments and methods, preparation of functional groups substituted with amino groups, purification/separation of amino compounds, etc., to reduce production costs, high yield, and good performance

Inactive Publication Date: 2015-03-25
RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its preparation process requires two steps and takes more than 96 h

Method used

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  • Preparation and purification methods of quaternary ammonium salt type dimeric surfactant
  • Preparation and purification methods of quaternary ammonium salt type dimeric surfactant
  • Preparation and purification methods of quaternary ammonium salt type dimeric surfactant

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] C 12 -2-C 12 Synthesis.

[0022] In a 100 mL three-necked flask equipped with a thermometer and magnetic stirring, add 7.4 mL (0.05 mol) of N,N,N',N'-tetramethylethylenediamine and 38.2 g (0.15 mol) of α-bromododecane Alkanes, constant temperature at 70 ℃, fully stirred, continue to react for 10h, stop heating. The mixture was filtered, recrystallized with a mixed solvent of ethanol: acetone = 1:3, and dried to obtain a refined product with a yield of 89.3%.

Embodiment 2

[0024] C 14 -2-C 14 Synthesis.

[0025] In a 100mL three-necked flask equipped with a thermometer and magnetic stirring, add 7.4mL (0.05mol) of N,N,N',N'-tetramethylethylenediamine and 41.6g (0.15mol) of α-bromotetradecane , keep the temperature at 75°C, stir well, continue the reaction for 12h, stop heating. The mixture was filtered and recrystallized with a mixed solvent of ethanol: acetone = 1:3 to obtain a refined product with a dry yield of 91.6%.

Embodiment 3

[0027] C 6 -2-C 6 Synthesis.

[0028] In a 100mL three-necked flask equipped with a thermometer and magnetic stirring, add 7.4mL (0.05mol) of N,N,N',N'-tetramethylethylenediamine and 12.1g (0.10mol) of α-chloro-n-hexane, Keep the temperature at 50°C, stir well, continue the reaction for 15h, and stop heating. The mixture was filtered and recrystallized with a mixed solvent of petroleum ether: acetone = 3:1 to obtain a refined product with a dry yield of 92.9%.

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Abstract

The invention relates to a preparation method capable of improving the composition obtained by recycling hydrocarbon, and belongs to the field of preparation of a quaternary ammonium compound. The preparation method comprises the following steps of mixing alpha-alkyl halide and N, N, N', N'-tetramethylethylenediamine at the mole ratio of (2-3):1, and stirring at 50-90 DEG C for 8-16 hours, thereby obtaining the quaternary ammonium salt type dimeric surfactant. A purification method comprises the following steps of recrystallizing a crude product of the quaternary ammonium salt type dimeric surfactant obtained by the preparation method by using a solvent, then drying so as to obtain a white powdery solid which is the purified quaternary ammonium salt type dimeric surfactant. According to the preparation and purification methods of the quaternary ammonium salt type dimeric surfactant, a method of cooking in one pot is adopted, so that the inconvenience caused by charging step by step is prevented. Other reaction solvents are not added in the synthesis process, so that the production cost is reduced greatly, and the technological process is shortened; the synthesized surfactant is very high in productivity, is good in performance, and can be used for producing detergents, foam drilling fluids and displacement agent for tertiary oil recovery and the like.

Description

technical field [0001] The invention relates to a method for preparing a composition capable of improving the recovery of hydrocarbons, and belongs to the field of preparation of quaternary ammonium compounds. Background technique [0002] Quaternary ammonium salt type gemini surfactant is a kind of cationic gemini surfactant. This type of quaternary ammonium salt type surfactant has high surface activity and has wide application prospects. [0003] At present, organic solvents such as ethanol are often used as the reaction medium in the synthesis of this type of surfactant, and the raw materials are added dropwise step by step. This kind of preparation process has high cost, long reaction time and relatively low yield. In addition, because the surfactant will produce a large amount of foam under reduced pressure, it will cause great difficulties for the solvent to come out. Therefore, the currently used preparation process is relatively complicated, the production cost is...

Claims

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Application Information

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IPC IPC(8): B01F17/18C07C209/08C07C209/84C07C211/63C09K23/18
Inventor 王香增高瑞民赵建社赵习森江绍静杨永超刘哲康宵瑜田宗武董珍王贺谊邵瑞利
Owner RES INST OF SHAANXI YANCHANG PETROLEUM GRP
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