Fluorine-carbon sufactant and preparing method

A fluorocarbon surface, gemini technology, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problems of few reports of amphoteric gemini surfactants, no industrial value, harsh synthesis conditions, etc. Excellent detergency, strong foaming power, good color effect

Inactive Publication Date: 2006-03-08
NANJING TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is reported that more than 100 kinds of gemini-type surfactants have been synthesized, most of which have no industrial value, either because the process route is long, or the raw materials are expensive, and the synthesis conditions are harsh, etc. There are only a few truly industrialized products
Gemini surfactants that have been reported so far are mostly anionic and cationic, while amphoteric gemini surfactants are rarely reported and are still in the research and development stage.

Method used

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  • Fluorine-carbon sufactant and preparing method
  • Fluorine-carbon sufactant and preparing method
  • Fluorine-carbon sufactant and preparing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Weigh 15.06g (0.03mol) of perfluorooctanesulfonyl fluoride and dissolve it in 50mL of isopropyl ether to make a solution, and dissolve 15.06g (0.03mol) of N,N-dimethyl-1,3-propanediamine in Prepare a solution in 25mL isopropyl ether, slowly add the latter solution dropwise to the former solution at low temperature (about 20°C), and stir at constant temperature. The dropping process is about 0.5h. ℃, reflux and stir for 3 hours, the hydrogen fluoride gas generated by the reaction is absorbed with sodium hydroxide solution, and the reaction is completed and cooled. After cooling, the reaction mixture was washed successively with water, 0.5% hydrochloric acid aqueous solution, saturated brine and dried over anhydrous magnesium sulfate. After removal of the solvent, distillation under reduced pressure gave N-[(dimethylamino)-alkyl]perfluorooctanesulfonamide as a light yellow solid product.

[0039] Weigh 17.52g (0.03mol) of N-[3-(dimethylamino)-propyl] perfluorooctane sulf...

Embodiment 2

[0041] The preparation of the intermediate N-[(dimethylamino)-alkyl]perfluorooctanesulfonamide is the same as above.

[0042] Weigh 23.36g (0.04mol) of N-[3-(dimethylamino)-propyl] perfluorooctane sulfonamide, join in the 250ml four-neck flask with rotor, thermometer, condensing device, with 70ml without Water ethanol is the quaternization solvent, add 3.20g (0.08mol) of NaOH, start the magnetic stirring device and connect the condensed water, stir and react for 30min, heat the constant temperature water bath to 80°C, slowly drop in the sulfonic acid containing sulfonic acid with the dropping funnel Lactone dichloropropane 16.10g (ie 0.02mol), sultone dichloropropane ethanol solution with a weight concentration of 20%, was added dropwise within 1 hour, and the reaction was continued at 80°C for 6 hours. After the reaction was completed, ethanol was distilled off to obtain a yellow solid product, a novel gemini-type fluorocarbon surfactant NGFPA: N, N, N', N'-tetramethyl-N, N'-...

Embodiment 3

[0044] The preparation of the intermediate N-[(dimethylamino)-alkyl]perfluorooctanesulfonamide is the same as above.

[0045]Weigh 23.36g (0.04mol) of N-[3-(dimethylamino)-propyl]perfluorooctane sulfonamide, join in the 250ml four-neck flask with rotor, thermometer, condensing device, with 50ml without Water ethanol is the quaternization solvent, add 3.20g (0.08mol) of NaOH, start the magnetic stirring device and connect the condensed water, stir and react for 30min, heat the constant temperature water bath to 80°C, slowly drop in the sulfuric acid lactone with the dropping funnel 17.70 g (0.015 mol) of dichloropropane, 20% ethanol solution of sulfuric acid lactone dichloropropane with a weight concentration of 20%, was added dropwise within 1 hour, and kept at 80° C. for 8 hours of continuous reaction. After the reaction was completed, ethanol was distilled off to obtain a yellow solid product as a novel gemini-type fluorocarbon surfactant: N, N, N', N'-tetramethyl-N, N'-bis[...

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Abstract

The present invention discloses a new-type double-ion type fluorocarbon surfactant. It is a double-ion type fluorocarbon surfactant using hydrophilic monoester dichloropropane as new-type hydrophilic flexible space group of coupling group, its chemical name is N,N,N',N'-tetramethyl-N,N'-bis [(perfluoroalkyl sulamine)-alkyl]-2-monoester group-propylenediammonium. Said surfactant utilizes reaction of perfluoroalkyl sulfuryl fluoride and N,N-dimethyl-1,2-ethylenediamine or N,N-dimethyl-1,3-propylenediamine to obtain intermediate product N-[(dimethylamino)-alkyl] perfluoroalkyl sulfamine, then makes the intermediate product and monoester dichloropropane undergo the process of quaterisation so as to obtain the invented product.

Description

technical field [0001] The invention relates to a surfactant and a preparation method thereof, in particular to a gemini type fluorocarbon surfactant and a preparation method thereof. Background technique [0002] Fluorosurfactants have extremely high surface activity because some or all of the hydrogen in the hydrophobic group of the hydrocarbon chain is replaced by fluorine atoms. Fluorosurfactant has the unique properties of "three highs and two phobias" (high surface activity, high thermal stability, high chemical stability; water repellency, oil increase), and its high surface activity and water and oil repellency can effectively reduce water And the surface tension of organic solvents, and high thermal stability and high chemical stability can enable it to be applied under the conditions of high temperature, strong acid and strong alkali and the presence of oxides, these properties are beyond the reach of hydrocarbon surfactants. However, the superhydrophobic and oil-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K23/00
Inventor 陈洪龄姚钱君
Owner NANJING TECH UNIV
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