| 摘要 |
PURPOSE:To provide a picture-image excellent in discrimination by making a polymerizative compound of (meta)acrylicester of alkylene oxide additive of ditrimethylol propane. CONSTITUTION:A heat-developing photosensitive material containing at least silver halide, a reducing agent, and a polymerizative compound, especially, a photosensitive microcapsule containing at least silver halide, a reducing agent, a color-picture-image forming material, a polymerizative compound, and a base precursor is contained on a base material. In this case, the polymerizative compound is (meta)acrylic ester of alkylene oxide (1 to 10mols) additive of ditrimethylol propane. The (meta)acrylic ester is obtained by reacting the additive of ethylene oxide, propylene oxide, and butylene oxide with (meta)acrylic acid at a temperature of 70 to 130 deg.C under the existance of an esterification catalyst such as P-toluene sulfonic acid or sulfuric acid or the like and a polymerization inhibitor such as hydroquinone. |
