Ultraviolet absorbing compounds and photographic elements containing them

A photographic element comprising (a) at least one light-sensitive layer containing a light sensitive silver halide emulsion and (b) a substantially inert ultraviolet absorbing compound with a peak absorption at less than 400 nm and being of formula (Ia):

• ##STR18## wherein:
• X is O or NR.sub.8, and the benzo ring may be substituted or unsubstituted;
• R.sub.5 and R.sub.8 are, independently, alkyl or alkenyl any of which may be substituted or unsubstituted, or R.sub.5 may form a ring with R.sub.6 or a 4-position substituent on the benzo ring;
• R.sub.6 is alkyl, alkenyl, aryl, heterocycle, alkoxycarbonyl, aryloxycarbonyl, alkoxy, aryloxy, sulfonamide, or imino, any of which may be substituted or unsubstituted, or hydrogen, hydroxy, cyano or halogen;
• R.sub.7 is alkyl, alkenyl, aryl, or heterocycle, any of which may be substituted or unsubstituted, or H;
• and
• R.sub.8 is alkyl, or alkenyl any of which may be substituted or unsubstituted, or H;
• wherein the ultraviolet absorbing compound is substantially inert such that less than 50%, of the compound, by weight, is destroyed or otherwise removed on processing of the photographic element.

A photographic element comprising (a) at least one light-sensitive layer containing a light sensitive silver halide emulsion and (b) an inert ultraviolet absorbing compound with a peak absorption at less than 400 nm and being of formula (Ib):

• ##STR19## wherein:
• X is O or NR.sub.8 ;
• R.sub.1, R.sub.2, R.sub.3, and R.sub.4 may be the same or different and any of them may be alkyl, alkenyl, aryl, heterocycle, alkoxycarbonyl, aryloxycarbonyl, alkoxy, aryloxy, sulfonamide, amino, imino, or amido, any of which may be substituted or unsubstituted, or hydrogen, hydroxy, cyano, or halogen, or combinations of R.sub.1 to R.sub.4 can be taken to form an alicyclic, carbocyclic or heterocyclic ring;
• R.sub.6 is alkyl, alkenyl, aryl, heterocycle, alkoxycarbonyl, aryloxycarbonyl, alkoxy, aryloxy, sulfonamide, or imino, any of which may be substituted or unsubstituted, or hydrogen, hydroxy, cyano or halogen;
• R.sub.5 is alkyl or alkenyl any of which may be substituted or unsubstituted, or R.sub.5 may form a ring with R.sub.4 or R.sub.6 ;
• R.sub.7 is alkyl, alkenyl, aryl, or heterocycle, any of which may be substituted or unsubstituted, or H;
• and
• R.sub.8 is alkyl or alkenyl any of which may be substituted or unsubstituted, or H.