The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 02, 2011
Filed:
Dec. 13, 2007
Vinci Martinez Felix, Kennett Square, PA (US);
Kelly D. Barton, Athens, PA (US);
Vinci Martinez Felix, Kennett Square, PA (US);
Kelly D. Barton, Athens, PA (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
Abstract
A process for producing a dispersion of a highly fluorinated ion exchange polymer is provided in which a dispersion of a highly fluorinated ion exchange polymer in a first liquid that includes at least 10 wt % of an organic liquid is atomized and released into a heated gas to produce flowable particles of highly fluorinated ion exchange polymer having dry surface/exteriors and an internal residual moisture content of at least 4 wt %. The particles are dispersed in a second liquid to produce a second dispersion of highly fluorinated ion exchange polymer from which proton exchange membranes and electrodes for fuel cells may be produced.