U.S. 8,153,198 B2

E I du Pont de Nemours and Company has been awarded a patent for a solution comprised of a solvent and an amorphous copolymer, the amorphous copolymer is comprised of 50% to 80% mole of monomer units derived from tetrafluoroethylene and 20% to 50% mole of monomer units derived from 1,2,3,3,3-pentafluoropropylene, and wherein solubility of the copolymer is limited to fluoroaromatic hydrocarbons.