Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Fluorocarbon gemini betaine surfactant, preparation method and application thereof

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: 2020-06-26
西安弘富源新能源科技有限公司
View PDF9 Cites 3 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fluorocarbon gemini betaine surfactant, preparation method and application thereof
  • Fluorocarbon gemini betaine surfactant, preparation method and application thereof
  • Fluorocarbon gemini betaine surfactant, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

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...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a fluorocarbon gemini betaine surfactant, a preparation method and application thereof. The method comprises the following steps: 1) dissolving N, N-dimethyl-1, 3-propane diamine into a first solvent, dissolving perfluorobutyl sulfonyl fluoride into the first solvent, adding the mixture into a dropping funnel, slowly dropping the product into a three-neck flask, carrying out heating reaction, then carrying out suction filtration by anhydrous ethanol, and then performing heating and drying to remove the anhydrous ethanol so as to obtain an intermediate; 2) adding a sulfonate and a second solvent into the intermediate, adding anhydrous sodium carbonate, and further carrying out reaction to obtain a crude product; drying the crude product in vacuum, and then performingextraction with acetone to obtain fluorocarbon betaine (product I); 3) adding a catalyst and a third solvent into the product I, adding diisocyanate dropwise, and performing vacuum drying to obtain fluorocarbon gemini betaine (product II); and 4) preparing a surfactant aqueous solution from the fluorocarbon gemini betaine (product II). The surfactant solves the problem that the surface activity is not high enough due to short fluorocarbon fragments, and the surfactant is used as a chemical oil displacement agent to improve the recovery ratio 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com