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
Cooler
Power supply input voltage detection circuit
Light-source control device, light-source control method, image reading device, and image forming apparatus
Method and system for using personal devices for authentication and service access at service outlets
Compositions and methods of vascular injury repair
High performance data transport system and method
Organic light-emitting display with black matrix
  Randomly Featured Patents
Distributed control network for irrigation management
Automatic injection device
Apparatus for transporting lithographic plates
Electric arc oven for treating molten metals with a gas and a process therefor
Medical device for generating a therapeutic parameter
Electrical connection arrangement and method for making electrical connection
Magnetron and microwave oven and high frequency heating apparatus each equipped with the same
Landscape lighting device
Antenna, module and imager, such as for a barcode reader
Stripe-geometry double heterojunction laser device