Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications

Klaehn, John R; Peterson, Eric S; Wertsching, Alan K; Orme, Christopher J; Luther, Thomas A; Jones, Michael G

Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications

Patent · Tue Aug 21 00:00:00 EDT 2007

OSTI ID:913425

Klaehn, John R ^[1]; Peterson, Eric S ^[1]; Wertsching, Alan K ^[1]; Orme, Christopher J ^[2]; Luther, Thomas A ^[1]; Jones, Michael G ^[3]

Idaho Falls, ID
Shelley, ID
Pocatello, ID

A PBI compound includes imidazole nitrogens at least a portion of which are substituted with an organic-inorganic hybrid moiety. At least 85% of the imidazole nitrogens may be substituted. The organic-inorganic hybrid moiety may be an organosilane moiety, for example, (R)Me.sub.2SiCH.sub.2-- where R is selected from among methyl, phenyl, vinyl, and allyl. The PBI compound may exhibit similar thermal properties in comparison to the unsubstituted PBI. The PBI compound may exhibit a solubility in an organic solvent greater than the solubility of the unsubstituted PBI. 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 occur at about room temperature and/or at about atmospheric pressure. Substituting may use at least 5 equivalents in relation to the imidazole nitrogens to be substituted or, preferably, about 15.

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Research Organization:: BECHTEL BWXT IDAHO LLC

Sponsoring Organization:: United States Department of Energy

DOE Contract Number:: AC07-99ID13727

Assignee:: Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Number(s):: 7,259,230

Application Number:: 10/862,921

OSTI ID:: 913425

Country of Publication:: United States

Language:: English

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