Water-resistant photographic paper support
AssigneeFelix Schoeller, Jr. GmbH & Co. KG
InventorsAlois-Bernhard Kerkhoff, Dietmar Bunke
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Abstract
A photographic paper support material for photographic purposes is disclosed with a polyolefin coating on both sides, wherein the base paper is internally sized by using a hydrophobizing sizing agent, and is surface sized with an aqueous coating mixture. The aqueous coating mixture contains a carboxyl-modified polyvinyl alcohol and optionally includes compounds with polyvalent cations. The paper support material is preferably used with such photographic layers as require wet development and wet fixing of the photographic image with photographic processing solutions.
Claims20
A water-resistant photographic paper support, comprising a base paper internally sized with at least one hydrophobizing sizing agent, surface sized with an aqueous coating mixture, and coated with a polyolefin on both sides, said aqueous coating mixture including a copolymer of an ethylenically unsaturated monobasic carboxylic acid and vinyl alcohol with a saponification grade of at least 96% and having a carboxyl group content of about 1.5-7 mol. %.
Dependencies are inferred from the claim text.