Process for impregnating supports

Details Process for impregnating supports Process for impregnating supports

2005-09-06

2005-09-06

Tsoy, Elena (Department: 1762)

Coating processes

With post-treatment of coating or coating material

Heating or drying

C427S337000, C427S340000, C427S341000, C427S352000, C427S353000, C427S372200, C427S430100

Reexamination Certificate

active

06939581

ABSTRACT:
An impregnation process of a porous support including immersing the support in an aqueous colloidal dispersion of ionomeric (per)fluorinated polymer, containing suiphonyl fluoride groups and having a concentration greater than 15% by weight, thermal treatment at 200° C. or less, conversion of the ionomer sulphonyl groups into the corresponding salts, ionomer crosslinking when ionomer equivalent weight is less than 650 g/eq.

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