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 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.

Inventors:

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

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+ Show Inventor Affiliations

1. Idaho Falls, ID
2. Shelley, ID
3. Pocatello, ID

Issue Date:

Tue Aug 21 00:00:00 EDT 2007

Research Org.:

BECHTEL BWXT IDAHO LLC

Sponsoring Org.:

USDOE

OSTI Identifier:

913425

Patent Number(s):

7259230

Application Number:

10/862,921

Assignee:

Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Classifications (CPCs):

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

C08G73/18 - Polybenzimidazoles

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08J - WORKING-UP

C08J2365/02 - Polyphenylenes
C08J2379/06 - Polyhydrazides
C08J5/2256 - {based on macromolecular compounds obtained by reactions other than those involving carbon-to-carbon bonds, e.g. obtained by polycondensation}

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08L - COMPOSITIONS OF MACROMOLECULAR COMPOUNDS

C08L79/04 - Polycondensates having nitrogen-containing heterocyclic rings in the main chain

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S525/933 - Blend of limited gas permeability

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DOE Contract Number:  

AC07-99ID13727

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY