C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 311/09 (2006.01) C07C 303/40 (2006.01) C07D 295/15 (2006.01)
Patent
CA 2096516
2096516 9210470 PCTABS00013 A process for the synthesis of the fluorochemical compound having the formula: RfSO2N(CHR2-CHR2COO-)R1N+(R)2H, wherein Rf is a fluoraliphatic radical containing 3 to 20 carbon atoms. The synthesis involves reaction of compounds of formula RfSO2N(H)R1N(R)2 and CHR2=CR2COOH in solution at elevated temperatures. The process can be used to synthesize the fluoroaliphatic amphoteric amino carboxylate surfactant having the formula: C6F13SO2N(C2H4COO-)C3H6N+(CH3)2H, which compound is useful in aqueous film-forming foamable concentrates for extinguishing flammable liquid fires.
Alm Roger R.
Guenthner Richard A.
Stern Richard M.
Wilkinson Thomas K.
Minnesota Mining And Manufacturing Company
Smart & Biggar
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