| 摘要 |
<p>PURPOSE:To improve stability to org. coloring materials and compds. expressed by the general formula I without degrading the hue and purity of dyestuffs or dyes by allowing the org. coloring materials and one kind of the above- mentioned compds. to coexist. CONSTITUTION:The photofading of the org. coloring materials is prevented and the stability thereof is improved without degrading the hue and purity of the dyestuffs or dyes by allowing the org. coloring materials and at least one kind of the compds. expressed by the general formula I to coexist. In the general formula I, R1 and R3 respectively denote a hydrogen atom, alkyl group, alkenyl group, alkinyl group, cycloalkyl group, cycloalkenyl group, aryl group, heterocyclic group, acyl group, sulfonyl group, phosphonyl group, carbamoyl group, sulfamoyl group, or oxycarbonyl group. R2 and R4 respectively denote a substituent; X and Y respectively denote -O-, -S-, -NR5-; R5 and R1 denote the similar groups; m and n denote 0 to 4 integer.</p> |
