Patents Assigned to UNC at Charlotte
  • Chemically cured low temperature polyimides
    Patent number: 5248760
    Abstract: The invention comprises curing polyamic acid solutions into polyimide solutions by adding a hydrophilic reagent to a polyamic acid solution. The hydrophilic reagent is selected to have little or no reactivity with amines or carboxylic acids, and is of the type that will react with water to form by-products that shift the equilibrium between polyamic acid as a reactant and polyimide and water as products toward the production of polyimide.
    Type: Grant
    Filed: January 25, 1991
    Date of Patent: September 28, 1993
    Assignees: UNC at Charlotte, MCNC
    Inventors: Thomas D. DuBois, Farid M. Tranjan, Stephen M. Bobbio