Patent ID: 7208553

Claim:
A composition comprising: (a) a fluoropolymer comprising (i) interpolymerized units derived from a nitrogen-containing cure site monomer; and (ii) a hydrogen-containing monomer; and (b) a catalyst composition comprising a compound having the general formula: wherein the group HA is an acid, and each R 1 , R 2 , and R 3 is, independently, the same or a different C 1 –C 20 alkyl group, C 3 –C 20 cyclic or heterocyclic group, R f (CH 2 ) x — wherein R f is a C 1 –C 8 linear or branched and at least partially fluorinated alkylene, cycloalkylene, or oxyalkylene, and x is 1 to 4, or a bond to another R group such that the nitrogen is bonded to or part of an imino or heterocyclic group; wherein two or more R groups may be linked to form a cyclic, bicyclic or aromatic group, optionally comprising a heteroatom, and wherein at least one of R 1 , R 2 , and R 3 is a fluorinated group.