Polymeric media comprising polybenzimidazoles N-substituted with organic-inorganic hybrid moiety

US7632898B2 · kind B2 · utility

Assignee

• Battelle Energy Alliance, LLC · US

Inventors

• John R. Klaehn · Idaho Falls, US
• Eric S. Peterson · Idaho Falls, US
• Alan K. Wertsching · Idaho Falls, US
• Christopher J. Orme · Firth, US
• Thomas A. Luther · Matthews, US
• Michael G. Jones · Pocatello, US

Key dates

• Filing date: Jul 3, 2007
• Grant date: Dec 15, 2009
• Expiry date: Jul 3, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S525/933
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A PBI compound includes imidazole nitrogens at least a portion of which are substituted with an organic-inorganic hybrid moiety may be included in a separatory medium. At least 85% of the imidazole nitrogens may be substituted. The organic-inorganic hybrid moiety may be an organosilane moiety, for example, (R)Me2SiCH2— where R is selected from among methyl, phenyl, vinyl, and allyl. The separatory medium may exhibit an H2, Ar, N2, O2, CH3, or CO2 gas permeability greater than the gas permeability of a comparable separatory medium comprising the PBI compound without substitution. The separatory medium may further include an electronically conductive medium and/or an ionically conductive medium. The separatory medium may be used as a membrane (semi-permeable, permeable, and non-permeable), a barrier, an ion exchange media, a filter, a gas chromatography coating (such as stationary phase coating in affinity chromatography), etc.