Fluoropolymer films
AssigneeE.I. duPont de Nemours and Company
InventorsRoman B. Larichev, Andrew Edward Feiring
Life of this patent
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Abstract
Provided are free standing films of copolymers of 1,2,3,3,3-pentafluoropropylene and tetrafluoroethylene, and processes for preparing the films.
Claims16
A film comprising an amorphous copolymer comprising 50 to 80 mole percent of monomer units derived from tetrafluoroethylene and 20 to 50 mole percent of monomer units derived from 1,2,3,3,3-pentafluoropropylene.
A process comprising subjecting to heat and pressure a dry copolymer comprising 50 to 80 mole percent of monomer units derived from tetrafluoroethylene and 20 to 50 mole percent of monomer units derived from 1,2,3,3,3-pentafluoropropylene to form a film having two surfaces,
Dependencies are inferred from the claim text.