Polybenzimidazoles Based on Monomers Derived From 4,4'-Dichlorodiphenyl Sulfone

Description:

This disclosure describes new polybenzimidazoles with high thermal stability and solubility, derived from high volume commercial precursors and are useful for high temperature films, fibers, and membranes.  All of the polymers are soluble in solvents such as N-methylpyrrolidone and they have Tg's of 400 degrees Celsius or higher. No weight loss with temperature is observed until more than 500 degrees Celsius and the materials have approximately 80% weight retention up to at least 700 degrees Celsius. The new polybenzimidazoles can be used for hydrogen separation at high temperature.

Patent Information:
Category(s):
Materials
Chemicals
For Information, Contact:
Li Chen
Licensing Associate
Virginia Tech Intellectual Properties, Inc.
(540) 443-9217
lchen@vtip.org
Inventors:
James McGrath
Judy Riffle
Benny Freeman
Keywords:
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