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US 4,308,332 AGranted
Conductive latex compositions, elements and processes
AssigneeEastman Kodak Company
InventorsDonald A. Upson, David J. Steklenski
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AssigneeEastman Kodak Company
InventorsDonald A. Upson, David J. Steklenski
Estimating the term…
A coating composition useful in forming conductive layers comprises a latex having water as a continuous phase and, as a dispersed phase, hydrophobic polymer particles having associated therewith a polyaniline salt semiconductor. The coating composition can be coated on a variety of supports to produce conductive elements. The coating compositions are particularly useful in forming antistatic layers for photographic elements or conducting layers for electrophotographic and electrographic elements. Also disclosed is a preferred process for preparing a latex coating composition comprising the steps of loading polymer particles with the polyaniline component of the polyaniline acid addition salt semiconductor and then acidifying the latex to form a polyaniline salt coating composition.
In a photographic element comprising a support having coated thereon (a) at least one radiation-sensitive layer and (b) a conductive layer comprising a coalesced, cationically stabilized latex binder and a semiconductor, the improvement wherein said semiconductor is associated with the polymer particles of said latex and said semiconductor is a polyaniline acid addition salt.
In an electrographic element comprising a support having coated thereon a conductive layer and an outermost dielectric layer, the improvement wherein said conductive layer comprises a coalesced, cationically stabilized latex binder and a polyaniline acid addition salt semiconductor, wherein said semiconductor is associated with the polymer particles of said latex.
Dependencies are inferred from the claim text.