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AssigneeAgfa-Gevaert
InventorsDaniel M. Timmerman, Filip B. E. Byl, Frank G. De Voeght
Estimating the term…
A recording material comprising a sheet, ribbon or web support and a hydrophilic colloid binder layer incorporating an ionic polymer in the form of dispersed particulate material providing to said material an antistatic character, characterized in that (i) said ionic polymer is a cross-linked copolymer of an acrylic and/or methacrylic acid ester including 90-99 mole % of acrylate and/or methacrylate and 1 to 10 mole % of tetraallyloxyethane as polyfunctional crosslinking monomer, wherein in said copolymer at least 75% of the ester groups have been transformed into alkali metal carboxylate groups (ii) said ionic polymer is coated at a coverage of at least 14 g/m.sup.2, and (iii) said ionic polymer is present in admixture with said hydrophilic colloid binder in a weight ratio of at least 10/90.
A photographic element containing a silver halide emulsion layer on a sheet, ribbon or web support, wherein said element contains an antistatic hydrophilic colloid binder layer incorporating at a coverage of at least 1.4 g/m.sup.2 an ionic copolymer in a weight ratio of 10/90 with respect to said hydrophilic colloid binder, and wherein said ionic copolymer is obtained by saponification from a crosslinked copolymer being an acrylic or methacrylic acid ester copolymer consisting of 90-99 mole % of acrylate or methacrylate ester units crosslinked by 1 to 10 mole % of tetraallyloxyethane units, said saponification having resulted in the transformation of at least 75% of said ester units into alkali metal carboxylate groups.
Dependencies are inferred from the claim text.