Fluorine-carbon sufactant and preparing method

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-...

Images