The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 20, 2005
Filed:
Jun. 26, 2003
Betty S. Jorgensen, Jemez Springs, NM (US);
Jennifer S. Young, Los Alamos, NM (US);
Brent F. Espinoza, Los Alamos, NM (US);
Betty S. Jorgensen, Jemez Springs, NM (US);
Jennifer S. Young, Los Alamos, NM (US);
Brent F. Espinoza, Los Alamos, NM (US);
The Regents of the University of California, Los Alamos, NM (US);
Abstract
A cross-linked, supported polybenzimidazole membrane for gas separation is prepared by layering a solution of polybenzimidazole (PBI) and α,α'dibromo-p-xylene onto a porous support and evaporating solvent. A supported membrane of cross-linked poly-2,2′-(m-phenylene)-5,5′-bibenzimidazole unexpectedly exhibits an enhanced gas permeability compared to the non-cross linked analog at temperatures over 265° C.