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

Abstract

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.

Inventors:
 [1];  [1];  [2];  [3];  [1];  [1];  [1]
  1. Idaho Falls, ID
  2. Shelley, ID
  3. Chubbuck, ID
Publication Date:
Research Org.:
BECHTEL BWXT IDAHO LLC
Sponsoring Org.:
USDOE
OSTI Identifier:
921072
Patent Number(s):
7,309,758
Application Number:
10/969,456
Assignee:
Battelle Energy Alliance, LLC (Idaho Falls, ID)
DOE Contract Number:  
AC07-99ID13727
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Klaehn, John R, Peterson, Eric S, Orme, Christopher J, Jones, Michael G, Wertsching, Alan K, Luther, Thomas A, and Trowbridge, Tammy L. Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications. United States: N. p., 2007. Web.
Klaehn, John R, Peterson, Eric S, Orme, Christopher J, Jones, Michael G, Wertsching, Alan K, Luther, Thomas A, & Trowbridge, Tammy L. Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications. United States.
Klaehn, John R, Peterson, Eric S, Orme, Christopher J, Jones, Michael G, Wertsching, Alan K, Luther, Thomas A, and Trowbridge, Tammy L. Tue . "Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications". United States. https://www.osti.gov/servlets/purl/921072.
@article{osti_921072,
title = {Polybenzimidazole compounds, polymeric media, and methods of post-polymerization modifications},
author = {Klaehn, John R and Peterson, Eric S and Orme, Christopher J and Jones, Michael G and Wertsching, Alan K and Luther, Thomas A and Trowbridge, Tammy L},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {12}
}

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