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US 11,530,306 B2Granted
Fluoropolymer film
AssigneeSolvay SA
InventorsChristine Hamon, Julio A. Abusleme, Aurélie Guyomard-Lack, Jean Le Bideau, Dominique Guyomard, Bernard Lestriez
Life of this patent
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Abstract
The invention pertains to a process for the manufacture of a fluoropolymer film, to the fluoropolymer film obtainable therefrom and to use of said fluoropolymer film in electrochemical and photo-electrochemical devices.
Claims12
A process for manufacturing a fluoropolymer film comprising a fluoropolymer composite, said process comprising:
- processing a mixture to obtain a film, wherein the mixture is a mixture of:
- at least one fluoropolymer having an intrinsic viscosity higher than 1.5 dl/g, wherein the intrinsic viscosity is measured in DMF at 25° C.;
- at least one liquid medium (LM) containing at least one ionic liquid (IL) and containing at least one electrolytic salt (ES) and, optionally at least one organic solvent (S);
- and
- heating the film obtained at a temperature between 120° C. and 200° C. to obtain a transparent film;
- wherein the film obtained has an elongation at break of at least of 200% and a stress at break of at least 15 MPa.
3 more elements
Dependencies are inferred from the claim text.