Title: Polymeric medium

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:

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

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+ Show Inventor Affiliations

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

Issue Date:

Tue Mar 06 00:00:00 EST 2012

Research Org.:

Idaho National Laboratory (INL), Idaho Falls, ID (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1039890

Patent Number(s):

8129498

Application Number:

11/933,652

Assignee:

Battelle Energy Alliance, LLC (Idaho Falls, ID)

Patent Classifications (CPCs):

C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

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

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C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08F - MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS

C08F265/10 - on to polymers of amides or imides
C08F271/02 - on to polymers of monomers containing heterocyclic nitrogen
C08F289/00 - Macromolecular compounds obtained by polymerising monomers on to macromolecular compounds not provided for in groups C08F251/00 - C08F287/00
C08F8/30 - Introducing nitrogen atoms or nitrogen-containing groups

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

C08G73/18 - Polybenzimidazoles

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DOE Contract Number:  

AC07-99ID13727; AC07-05ID14517

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE