Fluorine-containing alkylsulfobetaines, a process for their...

Details Fluorine-containing alkylsulfobetaines, a process for their... Fluorine-containing alkylsulfobetaines, a process for their...

A - Human Necessities

62

D

6/15, 31/6, 260/

A62D 1/02 (2006.01)

Patent

CA 1181418

Abstract of the disclosure: Fluorine-containing alkylsulfobetaines of the general formula Image wherein Rf denotes a perfluoroalkyl radical having 3 to 16 C atoms, R1 and R2, which can be identical or different denote alkyl radicals or hydroxyalkyl radicals having 1 to 4 C atoms, a is zero or 1, b assumes the value 1 when a is equal to 1 and the values 1 to 4 when a is equal to 0, and c is 3 or 4, are described. These are prepared by reacting the corresponding fluorine-containing amines with propane- sultone or butanesultone in organic solvents. The compounds are distinguished in particular by high interfacial activity at the interface of water with non-miscible organic liquids and by compatibility with other surfactants. They are suit- able for use as aftertreatment agents (auxiliary dispersing agents) in dispersions of fluoropolymers and as components in fire-extinguishing agents.

395917

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