| 摘要 |
PURPOSE:To enhance property for dry-type transfer color development of a cationic dye and light fastness, by providing a porous acrylonitrile polymer film comprising a particulate thermosetting resin on the surface of a film or paper. CONSTITUTION:A solution containing fine particles of a thermosetting resin and an acrylonitrile polymer containing acidic groups in an amount of not less than 0.1mol/kg-polymer is applied to the surface of a film or paper, and a wet-type coagulating treatment is conducted by use of a coagulating agent for the polymer, followed by washing with water and drying. Vinyl acetate, methyl acrylate, acrylamide or the like may be used as a comonomer for acrylonitrile, and the acidic groups in the polymer are preferably carboxyl groups or sulfonic acid groups. To provide a sufficient light fastness, it is necessary to use an acrylonitrile polymer containing not less than 30wt% of acrylonitrile. |
