Patent ID: 8324285

Claim:
A product comprising: a chemically treated thermal and acoustic insulation polyimide foam product comprising: an open cell polyimide foam substrate, the open cell polyimide foam substrate having an interior surface area; and a treatment chemical on at least a portion of the interior surface area, the treatment chemical bonded to at least a portion of the interior surface by a non-fluorinated polar group, said polar group connected to a bond group which is connected to a fluorinated hydrocarbon chain containing between 5 and 8 carbon atoms to render the interior surface hydrophobic and oleophobic said interior surface area comprising said polyimide, wherein the treatment chemical is a copolymer comprising a perfluoroacrylate and a co-monomer, the co-monomer being an ester of alkyl or a substituted alkyl group containing acrylic acid or a methacrylic acid.