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Polyimide aerogels, carbon aerogels, and metal carbide aerogels and methods of making same

  • US 20040132845A1
  • Filed: 07/22/2003
  • Published: 07/08/2004
  • Est. Priority Date: 07/22/2002
  • Status: Active Grant
First Claim
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1. A process for producing polyimide aerogels comprising:

  • contacting a diamine monomer and an aromatic dianhydride monomer in a solvent under conditions conducive to formation of a poly(amic acid);

    contacting the poly(amic acid) in a first solvent with a dehydrating agent to form a polyimide gel by imidization; and

    drying the polyimide gel in the presence of supercritical CO2 to afford an polyimide aerogel.

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