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Polybenzimidazole compounds

United States Patent

November 22, 2011
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
Polybenzimidazole Compounds, Polymeric Media, and Methods of Post-Polymerization Modifications
A PBI compound includes imidazole nitrogens at least a portion of which are substituted with a moiety containing a carbonyl group, the substituted imidazole nitrogens being bonded to carbon of the carbonyl group. At least 85% of the nitrogens may be substituted. The carbonyl-containing moiety may include RCO--, where R is alkoxy or haloalkyl. The PBI compound may exhibit a first temperature marking an onset of weight loss corresponding to reversion of the substituted PBI that is less than a second temperature marking an onset of decomposition of an otherwise identical PBI compound without the substituted moiety. The PBI compound may be included in separatory media. A substituted PBI synthesis method may include providing a parent PBI in a less than 5 wt % solvent solution. Substituting may use more than 5 equivalents in relation to the imidazole nitrogens to be substituted.
Klaehn; John R. (Idaho Falls, ID), Peterson; Eric S. (Idaho Falls, ID), Orme; Christopher J. (Shelley, ID), Jones; Michael G. (Chubbuck, ID), Wertsching; Alan K. (Idaho Falls, ID), Luther; Thomas A. (Idaho Falls, ID), Trowbridge; Tammy L. (Idaho Falls, ID)
Battelle Energy Alliance, LLC (Idaho Falls, ID)
11/ 933,604
November 1, 2007
GOVERNMENT RIGHTS The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-991D13727, and Contract No. DE-AC07-051D14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.