| 摘要 |
PURPOSE:To obtain the titled material capable of sufficiently preventing the decoloring and the discoloring of a color image due to a light by incorporating a specific compd. to the titled material. CONSTITUTION:The titled material contains at least one of the compds. down by formula I. The concrete example of the prescribed compd. is the compd. shown by formula I-1. The compd. shown by formula I is easily produced by reacting an amino group of a 4-amino-5-pyrazolone with a corresponding a halogenide, an acid chloride and an acid anhydride followed by ring closuring it, or by reacting a 4-halogeno-5-pyrazolone with a corresponding heterocyclic ring followed by effecting an etherification. The additional amount of the prescribed compd. is preferably 10<-1>-5mol per 1mol of the coupler. |
