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US 4,387,222 AGranted
Cyclic perfluoroaliphaticdisulfonimides
AssigneeMinnesota Mining and Manufacturing Company
InventorRobert J. Koshar
Life of this patent
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Abstract
Acidic cyclic perfluoroaliphaticdisulfonimides, salts thereof, a process for making the same, curable compositions containing acidic cyclic perfluoroaliphaticdisulfonimides or salts thereof and cationically-sensitive monomers, and a process for using acidic cyclic perfluoroaliphaticdisulfonimides and salts thereof as catalysts for the cure of cationically-sensitive monomers.
Claims11
Acidic cyclic perfluoroaliphaticdisulfonimides and their salts comprising compounds of the formula:
- ##STR4## wherein R.sub.f is perfluoroalkylene having 2 to 4 catenary carbon atoms or perfluorocycloalkylene having 4 to 7 ring atoms, R.sub.f optionally being substituted by one or more straight chain, branched, or cyclic perfluoroalkyl groups of 1 to 12 carbon atoms, with R.sub.f having a total of up to 14 carbon atoms;
- M is a cation with a valence equal to n;
- and n is an integer with a value of 1 to 5.
Dependencies are inferred from the claim text.