Perfluoro (alkoxycycloalkane) carbonyl fluoride compositions and their use
Assignee3M Innovative Properties Company
InventorsJohn C. Hansen, George G. I. Moore, Stephen D. Polson, Patricia M. Savu, Richard M. Stern
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Abstract
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.
Claims5
A composition comprising a perfluoro(alkoxycycloalkane) carbonyl fluoride compound of the formula:
- ##STR46## wherein R.sub.f is independently a perfluoroalkyl group having from 1 to 4 carbon atoms and wherein n is an integer from 2 to 5 inclusive with the proviso that when R.sub.f contains from 3 to 4 carbon atoms, n is less than or equal to 3.
A composition comprising a perfluoro(alkoxycycloalkane) amidoamine compound according to the formula:
- ##STR47## wherein:
- R.sub.f is independently a perfluoroalkyl group having from 1 to 4 carbon atoms;
- n is an integer from 1 to 5 inclusive with the proviso that when R.sub.f contains from 3 to 4 carbon atoms, n is less than or equal to 3;
- R is a lower alkyl group having from 1 to 4 carbon atoms;
- and
- m is inclusively an integer between 2 and 6.
Dependencies are inferred from the claim text.