Perfluoro (alkoxycycloalkane) carbonyl fluoride compositions and their use
 This invention provides perfluoro(alkoxycycloalkane) carbonyl fluoride compounds wherein, pendant from the fluorinated ring, are from 2 to 5 perfluoroalkoxy groups having from 1 to 4, preferably 1 to 2, carbon atoms with the proviso that when one or more of the perfluoroalkoxy groups contain from 3 to 4 carbon atoms, there are no more than 3 pendant groups. Also described are amidoamine intermediates prepared from the carbonyl fluoride compounds as precursors for surfactants used in aqueous film-forming foam (AFFF) compositions. 
3M Innovative Properties Company
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John C. Patricia M. Stephen D. Richard M. George G. I.
Hansen Savu Polson Stern Moore