Method for forming polymer composite films using a removable...

Details Method for forming polymer composite films using a removable... Method for forming polymer composite films using a removable...

C - Chemistry, Metallurgy

08

J

18/13, 204/202

C08J 5/22 (2006.01)

Patent

CA 1267759

ABSTRACT The invention is a method for forming polymer composite films using a removable substrate by: (a) forming a first dispersion of a first perfluorinated polymer containing sites convertible to ion exchange groups dispersed in a first dispersant; (b) depositing the first dispersion onto a removable substrate; (c) heating the first dispersion at a tem- perature sufficient to form and fuse a first polymer film; (d) forming a second dispersion of a second perfluorinated polymer containing sites convertible to ion exchange groups and a second dispersant; (e) depositing the second dispersion onto the first film; 34,261-F (f) heating the second dispersion for a time and at a temperature sufficient to form and fuse a second polymer film; (g) bonding the first film to the second film, thereby forming a composite film; and (h) removing the first substrate. The most preferred first and second dispersant is 1,2-dibromotetrafluoroethane. 34,261-F

510631

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