A process for the synthesis of the fluorochemical compound having formula R.sub.f SO.sub.2 N(CHR.sup.2 --CHR.sup.2 COO.sup.-) R.sup.1 N.sup.+ (R).sub.2 H wherein R.sub.f is a fluoraliphatic radical containing at least 3 carbon atoms. The synthesis involves reaction of compounds of formula R.sub.f SO.sub.2 N(H)R.sup.1 N(R).sub.2 and CHR.sup.2 .dbd.CH.sup.2 COOH in solution at elevated temperatures. The process can be used to synthesize the fluoroaliphatic amphoteric amino carboxylate surfactant having the formula: C.sub.6 F.sub.13 SO.sub.2 N(C.sub.2 H.sub.4 COO.sup.-) C.sub.3 H.sub.6 N.sup.+ (CH.sub.3).sub.2 H which compound is useful in aqueous film-forming foamable concentrates for extinguishing flammable liquid fires.
一种用于合成具有公式R.sub.f SO.sub.2 N(CHR.sup.2 --CHR.sup.2 COO.sup.-)R.sup.1 N.sup.+(R).sub.2 H的
氟化学化合物的过程,其中R.sub.f是至少含有3个碳原子的
氟代脂肪基。该合成涉及在溶液中高温下反应公式R.sub.f SO.sub.2 N(H)R.sup.1 N(R).sub.2和CHR.sup.2.dbd.CH.sup.2 COOH的化合物。该过程可用于合成具有公式C.sub.6 F.sub.13 SO.sub.2 N(C.sub.2 H.sub.4 COO.sup.-)C.sub.3 H.sub.6 N.sup.+(CH.sub.3).sub.2 H的
氟代脂肪族两性
氨基
羧酸盐表面活性剂,该化合物在灭火可泡沫浓缩剂中用于灭火易燃液体火灾。