| 摘要 |
Proteinaceous materials, especially gelatin, are hardened by incorporating therein at least one bis-epoxy compound corresponding to one of the formula : and wherein : X represents a 1,4-piperazinylene group or a monomethylor dimethyl-substituted 1,4-piperazinylene group, or represents a 1,2-pyrazolidinylene group, and n is 0 or an integer from 1 to 4. The proteinaceous material, especially the gelatin, is subsequently applied to form a photographic silver halide emulsion layer, a backing layer, a protective layer, a filter layer or any other photographic auxiliary layer. |
