| abstract |
PURPOSE:To prevent fading of an org. coloring material to light by allowing an org. coloring material and specific piperidine compd. to co-exist. CONSTITUTION:The org. coloring material and at least one kind of the compd. expressed by general formula I are made to co-exist. In formula R<1> denotes a hydrogen atom., alkyl group, cycloalkyl group, alkenyl group, cycloalkenyl group, alkinyl group, aryl group, heterocyclic group, acyl group, sulfonyl group, phosphonyl group, carbamoyl group, sulfamoyl group, alkoxycarbonyl group or aryloxycarbonyl group; R<2> denotes a substituent. (m) Denotes 0-6 integer; plural R<2> may be the same or different when (m) denotes >=2 integer. X denotes a nonmetallic atomic group necessary for forming 5- - 7-membered rings together with a spiro carbon atom. The decoloration and fading of the org. coloring material, more particularly the coloring matter, dyes, etc., used for a color photographic sensitive material by light is thereby considerably decreased. |