Photographic support material comprising an antistatic layer and a barrier layer
AssigneeEastman Kodak Company
InventorsCharles C. Anderson, Diane E. Kestner, Mark A. Lewis, Gary R. Opitz
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Abstract
Photographic support materials are comprised of a conventional support, such as polyester film, cellulose acetate film or resin-coated paper, having thereon an antistatic layer comprising vanadium pentoxide and an overlying barrier layer comprised of a latex polymer having hydrophilic functionality. The barrier layer provides excellent adhesion between the antistatic layer and overlying layers, such as silver halide emulsion layers or curl control layers, and also prevents unwanted diffusion of the vanadium pentoxide; whereby the combination of antistatic and barrier layers serves to impart a high level of permanent antistatic protection.
Claims20
A multilayer material useful as a base for a photographic element, said material comprising a support having thereon an antistatic layer comprising vanadium pentoxide in an amount sufficient to function as an antistatic agent and an overlying barrier layer comprised of a latex polymer in an amount sufficient to retard diffusion of said vanadium pentoxide, said latex polymer having hydrophilic functionality sufficient to render said barrier layer receptive to an aqueous coating composition applied thereto so that a layer formed from said aqueous coating composition is strongly adherent to said barrier layer.
A multilayer material useful as a base for a photographic element, said material comprising a polyester film having thereon an antistatic layer comprising vanadium pentoxide in an amount sufficient to function as an antistatic agent and an overlying barrier layer comprised of a latex polymer in an amount sufficient to retard diffusion of said vanadium pentoxide, said latex polymer having hydrophilic functionality sufficient to render said barrier layer receptive to an aqueous coating composition applied thereto so that a layer formed from said aqueous coating composition is strongly adherent to said barrier layer, said latex polymer comprising poly(ethylacrylate-co-styrene-co-2-aminoethyl methacrylate hydrochloride-co-2-hydroxyethyl methacrylate).
A multilayer material useful as a base for a photographic element, said material comprising a polyester film having thereon an antistatic layer comprising vanadium pentoxide in an amount sufficient to function as an antistatic agent and an overlying barrier layer comprises of (1) a latex polymer in an amount sufficient to retard diffusion of said vanadium pentoxide, said latex polymer having hydrophilic functionality sufficient to render said barrier layer receptive to an aqueous coating composition applied thereto so that a layer formed from said aqueous coating composition is strongly adherent to said barrier layer, said latex polymer comprising a terpolymer of vinylidene chloride, methyl acrylate and itaconic acid, (2) ethylene carbonate in an amount sufficient to serve as a coalescing agent and (3) a p-nonyl phenoxy polyglycidol in an amount sufficient to improve coatability of the composition forming said barrier layer.
Dependencies are inferred from the claim text.