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Negative-positive double-ion surfactant and preparation method thereof

A gemini surface, cationic technology, applied in the preparation of anion-cation type gemini surfactants, in the field of anion-cation type gemini surfactants, to achieve the effect of mild reaction conditions and convenient preparation and operation

Inactive Publication Date: 2014-12-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no reports on the synthesis and application of surfactants with similar structures

Method used

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  • Negative-positive double-ion surfactant and preparation method thereof
  • Negative-positive double-ion surfactant and preparation method thereof
  • Negative-positive double-ion surfactant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] Accurately weigh 0.010 mol of phosphorus oxychloride in a dry Erlenmeyer flask, cool down to 0°C, add 0.005 mol of ethylene glycol dropwise, complete the dropwise addition in 30 minutes, and stir at room temperature for 10 minutes to prepare cyclovinyloxychlorophosphate. Use a dropping funnel to add a certain amount of n-octanol into the reactor at a rate of 1ml / min to 20ml / min, raise the temperature to 50°C-60°C, and react for a period of time to prepare the required intermediate. After removing the solvent by evaporation, the intermediate crude product and 0.030mol of tetradecyl dimethyl tertiary amine were reacted in absolute ethanol at 70°C-80°C for 40h to obtain the target product, and the solvent was removed by evaporation. recrystallized in a mixed solvent, and the separated product was placed in a vacuum oven to obtain a white powdery solid anion-cation type gemini surfactant.

Embodiment 2

[0047] Accurately weigh 0.010 mol of phosphorus oxychloride in a dry Erlenmeyer flask, cool down to 0°C, add 0.005 mol of 1,3-propanediol dropwise, complete the dropwise addition in 30 minutes, and stir at room temperature for 10 minutes to prepare cyclopropenyloxychlorophosphate. Use a dropping funnel to add a certain amount of benzene solution of dodecyl alcohol to the reactor at a rate of 1ml / min to 20ml / min. After the dropwise addition, the reaction temperature is raised to 50°C, and the required intermediate is prepared after 2 hours of reaction. After removing the solvent by evaporation, the intermediate crude product and 0.020mol of dodecyl dimethyl tertiary amine were reacted in absolute ethanol at 75°C for 48h to obtain the target product, and the solvent was removed by evaporation. In a mixed solvent of acetone and ethyl acetate Recrystallize in medium, and place the separated product in a vacuum oven to obtain a white powdery solid anion-cation type gemini surfactant...

Embodiment 3

[0049] Accurately weigh 0.010 mol of phosphorus oxychloride in a dry Erlenmeyer flask, cool down to 2°C, add 0.005 mol of 1,4-butanediol dropwise, complete the dropwise addition in 30 minutes, and stir at room temperature for 10 minutes to produce cyclobutenyloxychloride Phosphate. Add a certain amount of myristyl alcohol into the reactor, raise the temperature to 55°C, and react for 3 hours to prepare the required intermediate. After evaporating to remove the solvent, the intermediate crude product and 0.040mol of hexadecyldimethyl tertiary amine were reacted for 50h in absolute ethanol at 75°C to obtain the target product, and the solvent was removed by evaporation. In a mixed solvent of acetone and ethyl acetate Recrystallize in medium, and place the separated product in a vacuum oven to obtain a white powdery solid anion-cation type gemini surfactant.

[0050] When in use, according to the conditions of the well, select this type of surfactant and prepare it into a 0.05%-...

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Abstract

The invention provides a negative-positive double-ion surfactant and a preparation method thereof. The preparation method in turn comprises the following steps: (1) weighing a certain amount of phosphorus oxychloride and solvent benzene, adding into a 100ml three necked round bottom flask, placing in an ice water bath for cooling, then slowly adding a certain amount of diol, stirring at room temperature for a period of time for preparing cyclic chloro phosphate; (2) adding long carbon chain alcohol into the reactant solution for reaction for a period of time for preparing a needed intermediate; (3) evaporating off the solvent to obtain an intermediate crude product, reacting the intermediate crude product and long chain alkyl dimethyl tertiary amine in anhydrous ethanol for a period of time to obtain a crude product, and purifying the crude product to obtain the white powder solid negative-positive double-ion surfactant.

Description

Technical field: [0001] The invention relates to an injection booster used in the oil field water flooding development process, belonging to a class of anion-cation type gemini surfactants; in addition, it also relates to a preparation method of the anion-cation type gemini surfactants. Background technique: [0002] Due to the separation tendency of traditional single-head group and single-alkane chain surfactants due to charge repulsion or hydration of the ionic head group, the surfactants are loosely arranged on the surface of the aqueous solution, and the surface activity is not high. And the Gemini surfactant (Gemini) that begins to report from the beginning of the 1970s is called novel surfactant, is different from traditional surfactant structure: Gemini surfactant is two single-chain surfactants through linking group in A surfactant attached at or near a hydrophilic headgroup. Since the connection of chemical bonds weakens the repulsion between the ionic head groups...

Claims

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Application Information

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IPC IPC(8): C09K8/584C07F9/11
CPCC09K8/584C07F9/11
Inventor 孙玉海王娟代兴益马天态马素俊杨景辉冯雷雷杜宝坛冯茜任占春黄艺校
Owner CHINA PETROLEUM & CHEM CORP
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