Fluorocarbon Gemini Betaine Surfactant and Its Preparation Method and Application

A technology of surfactant and fluorocarbon betaine, which is applied in the preparation of sulfonamides, chemical instruments and methods, organic chemistry, etc., can solve the problem of insufficient surface activity and achieve the effect of avoiding environmental hazards

Active Publication Date: 2021-10-01
西安弘富源新能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention obviously solves the problem that the surface activity is not high enough due to the short fluorocarbon chain segment. The diisocyanate cross-linked fluorocarbon gemtaine surfactant is used as a chemical oil displacement agent to improve the recovery of crude oil in tertiary oil recovery.

Method used

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  • Fluorocarbon Gemini Betaine Surfactant and Its Preparation Method and Application
  • Fluorocarbon Gemini Betaine Surfactant and Its Preparation Method and Application
  • Fluorocarbon Gemini Betaine Surfactant and Its Preparation Method and Application

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preparation example Construction

[0031] Concrete, the preparation method of fluorocarbon gemtaine betaine surfactant and be used for ultra-low interfacial tension oil displacement agent, comprise the following steps:

[0032] (1) Dissolve N,N-dimethyl-1,3-propylenediamine in isopropyl ether, add it into a three-necked flask, and place it in an ice-water bath (temperature below 10°C). Dissolve perfluorobutylsulfonyl fluoride in isopropyl ether, add it to the dropping funnel, and slowly drop it into the three-necked flask, the temperature is always below 10°C. Wherein the molar ratio of perfluorobutylsulfonyl fluoride to N,N-dimethyl-1,3-propylenediamine is 1:(1-1.2). After dropping, raise the temperature to 55-70° C., react for 5-7 hours, then filter with absolute ethanol, and then heat and dry to remove the absolute ethanol to obtain an intermediate.

[0033] (2) The intermediate and 3-chloro-2 hydroxypropanesulfonate obtained in step 1 are added to a flask having a mixed solvent of water and isopropanol, wh...

Embodiment 1

[0039] Dissolve N,N-dimethyl-1,3-propanediamine in isopropyl ether and add it into a three-necked flask. Dissolve perfluorobutylsulfonyl fluoride in isopropyl ether, add it to the dropping funnel, and slowly drop it into the three-necked flask, the temperature is always 9°C. The molar ratio of perfluorobutylsulfonyl fluoride to N,N-dimethyl-1,3 propanediamine is 1:1.05. After dropping, the temperature was raised to 60° C., and reacted for 6 hours, then suction-filtered with absolute ethanol, and then heated and dried to remove absolute ethanol to obtain an intermediate. Take the intermediate and 3-chloro-2-hydroxypropanesulfonate in a molar ratio of 1:1.05, add a mixed solvent with a mass ratio of water and isopropanol of 10:2, react at 85°C for 2 hours, and cool the reactant to 50 After ℃, a certain amount of anhydrous sodium carbonate was added, and the reaction was continued at 85 ℃ for 6 hours to obtain a crude product. The crude product was dried in vacuo and extracted ...

Embodiment 2

[0042] Dissolve N,N-dimethyl-1,3-propanediamine in isopropyl ether and add it into a three-necked flask. Dissolve perfluorobutylsulfonyl fluoride in isopropyl ether, add it into the dropping funnel, and slowly drop it into the three-neck flask, the temperature is always 8°C. The molar ratio of perfluorobutylsulfonyl fluoride to N,N-dimethyl-1,3 propanediamine is 1:1.1. After dropping, raise the temperature to 70°C, react for 6 hours, then filter with absolute ethanol, then heat and dry to remove absolute ethanol to obtain an intermediate. Take the intermediate and 3-chloro-2-hydroxypropanesulfonate in a molar ratio of 1:1.05, add a mixed solvent with a mass ratio of water and isopropanol of 10:2, react at 85°C for 2 hours, and cool the reactant to After 50°C, a certain amount of anhydrous sodium carbonate was added, and the reaction was continued at 85°C for 6 hours to obtain a crude product. The crude product was dried in vacuo and extracted with acetone to give fluorocarbo...

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Abstract

The invention discloses a fluorocarbon gemini betaine surfactant and its preparation method and application. The method comprises: 1) dissolving N,N-dimethyl-1,3 propylenediamine in a first solvent, and dissolving perfluorobutyl Sulfonyl fluoride is dissolved in the first solvent, added to the dropping funnel, slowly dropped into the three-necked flask, heated up to react, then filtered with absolute ethanol, then heated and dried to remove the absolute ethanol to obtain the intermediate; 2) to the middle Add sulfonate and the second solvent to the solid, add anhydrous sodium carbonate, and continue the reaction to obtain the crude product. The crude product is vacuum-dried, and then extracted with acetone to obtain fluorocarbon betaine (product I); 3) the product I is added to a catalyst and a third solvent, and diisocyanate is added dropwise, and vacuum-dried to obtain fluorocarbon gemini betaine (product II); 4) configuring the fluorocarbon gemini betaine (product II) in an aqueous surfactant solution. The surfactant solves the problem of insufficient surface activity due to short fluorocarbon segments, and the surfactant is used as a chemical oil displacement agent to improve the recovery rate of crude oil in tertiary oil recovery.

Description

technical field [0001] The invention relates to the synthesis of gemtaine and its application, in particular to a fluorocarbon gemtaine surfactant and its preparation method and application. Background technique [0002] Fluorocarbon surfactants have high surface activity, high thermal stability and high chemical stability due to the fluorocarbon chain in the molecule, and they are both water-repellent and oil-repellent, and have excellent wettability, oil repellency and low friction , antistatic, permeability and antifouling properties, and less dosage, excellent performance. Therefore, fluorocarbon surfactants have great application potential in the field of tertiary oil recovery, have broad application prospects and market value, and are currently the research topic of many domestic scientific research institutes and oilfield chemists. Fluorocarbon surfactants can increase and improve the wettability, permeability, diffusivity and fluidity of crude oil in formation rocks...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C311/05C07C303/38C07C303/40C09K8/584C09K8/60
CPCC07C303/38C07C303/40C07C311/05C09K8/584C09K8/602C07C2601/14
Inventor 王晨田咪咪杨晓武李培枝
Owner 西安弘富源新能源科技有限公司
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