Photographic surface layers comprising dextran derivatives
AssigneeAgfa-Gevaert
InventorsJoan T. Vermeersch, Hubert Vandenabeele, Jacques L. Vervecken, Daniel M. Timmerman
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Abstract
The present invention provides a method of hardening a proteinaceous surface layer of a photographic silver halide element by incorporating a dextran derivative in said proteinaceous surface layer, said dextran derivative being the reaction product of dextran and an epihalohydrin. The invention also provides a photographic element comprising at least one silver halide emulsion layer and at least one proteinaceous surface layer comprising the reaction product of dextran and an epihalohydrin.
Claims12
Method of hardening a proteinaceous layer of a photographic silver halide element by incorporating in said proteinaceous layer a reaction product of dextran and an epihalohydrin capable of functioning as a hardener.
Photographic element comprising at least one silver halide emulsion layer and at least one proteinaceous layer comprising a reaction product of dextran and an epihalohydrin capable of functioning as a hardener.
Dependencies are inferred from the claim text.