Colorant treated ion exchange resins, method of making, heat...

Details Colorant treated ion exchange resins, method of making, heat... Colorant treated ion exchange resins, method of making, heat...

2005-09-08

2009-11-03

Ryan, Patrick (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C008S647000, C428S032520, C428S221000

Reexamination Certificate

active

07611787

ABSTRACT:
Disclosed is a colorant treated ion exchange resin comprising at least 15% of exchangeable groups comprising at least one of an ion, a Lewis acid, or a Lewis base resulting from a colorant having a pKaor pKbof greater than 5 in an aqueous solution at 25° C., based on the total number of exchangeable groups. Also disclosed are heat transfer systems, assemblies, fuel cell systems and methods of maintaining a conductivity of less than 200 μS/cm in a heat transfer fluid that employ the disclosed colorant treated ion exchange resins. Finally, a method of making the disclosed colorant treated ion exchange resins is provided.

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