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Title: Process to prepare stable trifluorostyrene containing compounds grafted to base polymers using a solvent/water mixture

Patent ·
OSTI ID:1176363

A fluorinated ion exchange polymer is prepared by grafting at least one grafting monomer derived from trifluorostyrene on to at least one base polymer in a organic solvent/water mixture. These ion exchange polymers are useful in preparing catalyst coated membranes and membrane electrode assemblies used in fuel cells.

Research Organization:
E.I. du Pont de Nemours and Company, Wilmington, DE (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC04-02AL67606
Assignee:
E.I. du Pont de Nemours and Company (Wilmington, DE)
Patent Number(s):
7,737,190
Application Number:
11/388,272
OSTI ID:
1176363
Resource Relation:
Patent File Date: 2006 Mar 24
Country of Publication:
United States
Language:
English

References (2)

Proton Conductivity of Nafion 117 as Measured by a Four-Electrode AC Impedance Method journal January 1996
Aromatic monomers with pendant fluoroalkylsulfonate and sulfonimide groups journal July 2000