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AssigneeMinnesota Mining and Manufacturing Company
InventorsAlberto Valsecchi, Elio Martino, Paola Puppo, Eric D. Morrison
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Light-sensitive photographic element comprising a polymeric film base, a silver halide emulsion layer, and an antistatic layer comprising a low viscosity and highly sulfonated water soluble polyacetal (preferably obtained by reaction of a low viscosity polyvinyl alcohol and a sulfonated aldehyde), a hydrophobic binder selected from the group consisting of a water dispersible sulfopolyester and a latex polymer having hydrophilic functionality, and a polyfunctional aldehyde crosslinking agent. The antistatic layer may be present as a backing layer on the side of the base opposite the silver halide emulsion layer, as a subbing layer between the base and the emulsion layer in a single or double side coated photographic element, and/or as a subbing layer between the base and a different backing layer.
A light-sensitive photographic element comprising a polymeric film base, at least one silver halide emulsion layer, and an antistatic layer comprising (a) a water soluble polyactetal having a viscosity lower than 1.0 dl/g and comprising sulfonated moieties in an amount of at least 50% by weight, (b) a hydrophobic binder selected from the group consisting of a water dispersible sulfopolyester and a latex polymer having hydrophilic groups having hydrophilic functionality, and (c) a aldehyde crosslinking agent having at least two aldehyde groups, adhered to at least one side of said polymeric film base.
Dependencies are inferred from the claim text.