| abstract |
A fluorine-containing aminosulfonate of the general formula Rf-Ql-N(R1)-Q2-N(R2)-Q3-SO3M wherein Rf represents a perfluorinated aliphatic group having 3 to 16 carbon atoms; Q1 represents -CH2-h in which h represents an integer of 1 to 6, -CH2CH2Z-i in which Z represents -O- or -S-, and i represents an integer of 1 to 4, <IMAGE> or a combination of these; Q2 and Q3 are identical or different and each represents -CH2-j in which j represents an integer of 1 to 6, <IMAGE> in which R3 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, or <IMAGE> M represents a hydrogen atom, an alkali metal atom, an alkaline earth methal atom, or -N(H)m(R4)n in which R4 represents an alkyl group having 1 to 3 carbon atoms, and m and n represent 0 or an integer of 1 to 4 provided that m+n=4; R1 represents a hydrogen atom or an alkyl group having 1 to 12 carbon atoms; and R2 represents a hydrogen atom, an alkyl or hydroxyalkyl group having 1 to 4 carbon atoms, -Q3SO3M in which Q3 and M are as defined, or -CH2-kCOOM in which M is as defined and k represents an integer of 1 to 4. |