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
Systems and methods for updating a data store using a transaction store
Document-related representative information
Circuit arrangement having a load transistor and a voltage limiting circuit and method for driving a load transistor
System and method of detecting and locating intermittent and other faults
Method and device for processing broadcast packets/multicast control messages
Aisle barrier
Spatula
  Randomly Featured Patents
Ring
Method and apparatus for electronic mail filtering
Ink jet air bubble detection
Process for synthesizing 4,4'-dihydroxydiphenyl sulfone
Emergency lighting fluorescent pack
Valve with outlet flow rate regulation, and container equipped with such a valve
Precoated metal sheet for light reflectors
Sprinkler
Liquid polymer
Semiconductor tranducer and its use in a sensor for detecting electron-donor or electron-acceptor species