Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Polymeric medium










Image Number 11 for United States Patent #8129498.

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.








 
 
  Recently Added Patents
Cryptographic key split combiner
Vacuum cleaner filter adapter ring
Resonant oscillator with start up and shut down circuitry
Stable file system
Attribute category enhanced search
Phosphor, light emitting apparatus, and liquid crystal display apparatus using the same
Methods of implanting dopant ions
  Randomly Featured Patents
Polyurethane sponges manufactured with additive dispersed therein
Signal transfer system for time division switching systems
Electrical connector
Toggle switch actuating apparatus
Multiple positioner data storage device
Analog-digital correlator
Process for the preparation of perfluoro-amino oxaziridines
Soldering iron having a quickly detachable tip utilizing a retractable insulated gripping mechanism
Fan
Method for polymerizing cycloolefin polymer containing polar functional groups and electronics devices employing the polymerized cycloolefins