BINDER RESIN FOR HEAT DEVELOPABLE PHOTOSENSITIVE MATERIAL AND HEAT DEVELOPABLE PHOTOSENSITIVE MATERIAL

PROBLEM TO BE SOLVED: To provide a binder resin for a heat developable photosensitive material, which when used for a photosensitive layer in a heat developable photosensitive material, provides the heat developable photosensitive material having high preservation stability since it has reduced perm...

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Hauptverfasser:	ICHITANI MOTOKUNI, OCHITANI YUKIO
Format:	Patent
Sprache:	eng
Schlagworte:	AUXILIARY PROCESSES IN PHOTOGRAPHY CHEMISTRY CINEMATOGRAPHY COMPOSITIONS BASED THEREON ELECTROGRAPHY HOLOGRAPHY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR,STEREO-PHOTOGRAPHIC PROCESSES PHOTOGRAPHY PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES PHYSICS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a binder resin for a heat developable photosensitive material, which when used for a photosensitive layer in a heat developable photosensitive material, provides the heat developable photosensitive material having high preservation stability since it has reduced permeation of moisture causing fogging, and also to provide a heat developable photosensitive material. SOLUTION: The binder resin for a heat developable photosensitive material is composed of a polyvinyl acetal resin having a residual acetyl group content of ≤25 mol%, a residual hydroxyl group content of 17 to 30 mol.% and a polymerization degree of 200 to 3,000. In the polyvinyl acetal resin, water vapor permeability measured by a method in accordance with JIS Z 0208 when being made into a sheet with a film thickness of 20 μm is ≤500 g/(m2day). COPYRIGHT: (C)2006,JPO&NCIPI