Compositions of specialty fluoroelastomers containing copolymerized
units of tetrafluoroethylene, propylene, optionally vinylidene fluoride, and a
cure site monomer selected from the group consisting of i) trifluoroethylene, ii)
3,3,3-trifluoropropene-1, iii) 1,2,3,3,3-pentafluoropropylene, iv) 1,1,3,3,3-pentafluoropropylene,
and v) 2,3,3,3-tetrafluoropropene are readily curable with polyhydroxy curing systems.
The resulting cured articles have a combination of excellent resistance to alkaline
fluids, superior tensile properties and compression set resistance.
