| abstract |
Thermal and photochemical yellowing of a color photographic element, such as a color print, is inhibited by incorporating into the photographic element an ionizable epoxy compound having the formula:n n wherein R is H, an alkyl group, or an aryl group; L₁ is an alkyl group or an aryl group; L₂ is -O-, -CO-, -S-, -SO₂-, -PO₂-, -CO₂-, -NHCO- or -NHSO₂-, wherein L₂ may be orientated in either direction; L₃ is an alkyl group; m is 0 or 1; p is 0 or 1; and X is n-NHSO₂R', -SO₂NHR', -COOH,n n wherein R' is H or an alkyl or aryl group, with the proviso that where L₂ comprises an ionizable group, X may also be an alkyl group or an aryl group. |