| 摘要 |
PURPOSE:To improve decolorability by incorporating a a specific mordant and dye into at least one hydrophilic colloid layer. CONSTITUTION:This material contains the mordant expressed by the formula I and the dye expressed by the formula II in at least one hydrophilic colloid layer. In the formula I, A denotes a monomer unit copolymerized with such a copolymerizable monomer which has >=2 copolymerizable ethylenic unsatd. groups and contains >=1 thereof in the side chain. B denotes a monomer unit copolymerized with a copolymerizable ethylenic unsatd. monomer. R1-R7 denote a hydrogen atom, etc.; Q denotes a single bond, alkylene group, etc.; H-X denotes a proton acidic material. x-z denote molar fractions; x, y are 0-160, z is 30-100. In the formula II, R7 denotes an aryl group, etc., having >=1 carboxylic acid groups, etc.; R8 is -CONR9R10, etc. (R9, R10 denote a hydrogen atom, etc.); L1-L3 are a methine group, n is 0, 1 or 2. The decolorability is thereby improved. |
