Abstract: An oligo- or polyimide comprising one or two residue(s) of an anhydride based acetylenic end-capper, at least one EBPA residue, at least one residue of anaromatic di-amine, and optionally at least one residue of an aromatic non-acetylenic di-anhydride is disclosed. A method for obtaining such an oligo- or polyimide is also disclosed.

Abstract: Metal complexes (“compatibilizers”) having properties particularly useful for treating and compatibilizing nanomaterials (i.e. carbon nanotubes, nanofibers, nanographite) include metal cations and anionic surfactants. The treated nanomaterials can be isolated as solid treated nanomaterial and used in further applications where increased dispersion is desirable.

Abstract: The present invention is directed to polyimide systems which simultaneously offer low toxicity, a high glass transition temperature, excellent thermal oxidative stability, and desirable processing characteristics. These various polyimide systems include mixtures of monomeric reactants, polyimide-precursor reaction products, polyimides, and polyimide-containing articles. In one aspect of the invention, the mixture of monomeric reactants includes at least one dia-nhydride or a derivative thereof, and at least one diamine. The diamine may be 4,4′-[1,4-phenylene-bis(1-methylethylidene)]bisaniline, 4,4′-[1,3-phenylene-bis(1-methylethylidene)]bisaniline, and/or a derivative thereof. The diamine also may include a phenylenediamine, 2,2-bis[4-(4-aminophenoxyl)phenyl]propane, 4,4′(1,4-phenylene-bismethylene)bisaniline, and/or a derivative thereof. In addition, the mixture may include a reactive end-capping agent and/or a non-reactive end-capping agent.