Colorant treated ion exchange resins, method of making, heat transfer systems and assemblies containing the same, and method of use
US7611787B2 · kind B2 · utility
2Cited by
19References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 8, 2005 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Oct 12, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/249921
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
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 pKa or pKb of 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.