Transparent static dissipative formulations for coatings
AssigneeE. I. Du Pont de Nemours and Company
InventorsOswald R. Bergmann, Carol A. Brevett, Carl B. Douglas, Peter C. Szeto
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Abstract
Transparent electroconductive coating compositions, methods to prepare such coating compositions, and substrates coated with these coating compositions. The coatings are based on polymeric resins containing finely dispersed electroconductive powders. The coatings can be characterized by the following: thermoformable while retaining transparency and electrical conductivity that is insensitive to humidity; low chloride extractability, stable to exposure to isopropanol or water/soap solutions.
Claims11
A stable dispersion for use in making thermoformable and transparent coatings comprising an electroconductive powder, a thermoplastic resin, a polyester-polyamine copolymer dispersant, and at least one solvent, wherein said dispersion contains less than about 3 ppm of extractable chlorides.
Dependencies are inferred from the claim text.