Electrically conductive coating compositions and method for the preparation thereof
OwnerVaman G. Kulkarni, William R. Mathew +2inventors
InventorsVaman G. Kulkarni, William R. Mathew, Lawrence W. Shacklette, John C. Campbell
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Abstract
An electrically conductive coating composition includes an intrinsically conductive polymer dispersed in a film-forming thermoplastic matrix. The coating composition also includes at least one organic solvent capable of dissolving the dispersion. A method according to the invention includes the steps of preparing a dispersion of an intrinsically conductive polymer in a film-forming thermoplastic matrix. The method also includes the steps of dissolving the dispersion in an organic solvent and forming a film from the dissolved dispersion.
Claims10
An electrically conductive coating composition comprising:
- a dispersion comprising
- dispersed particle of an intrinsically conductive polymer and, a solution which comprises a hydrophobic film-forming thermoplastic polymer, a highly polar plasticizer, and, an acid anhydride surfactant, in an organic solvent;
- wherein said thermoplastic polymer is soluble in said solvent to at least 1 percent by weight;
- and, wherein said dispersion comprises from about 1 to about 50 percent by weight of said intrinsically conductive polymer.
An article comprising:
- a substrate;
- and,
- an electrically conductive coating on a surface of said substrate wherein said coating has adhesion to said substrate, said coating comprising from about 99 to about 50 percent by weight of a matrix having a film-forming material comprising a hydrophobic thermoplastic polymer, a highly polar plasticizer and an acid anhydride surfactant;
- and from about 1 to about 50 percent by weight of a dispersed phase comprising particle of an intrinsically conductive polymer, and said particles having a particle size equal to or less than about 400 nanometers and the loading of said particle and the thickness of the coating is such that said coating is transmissible to at least about 10 percent of the energy of the visible light spectrum.
Dependencies are inferred from the claim text.