Method and photographic material and process comprising a benzotriazole compound
AssigneeEastman Kodak Company
InventorWilliam J. Begley
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Abstract
A new method of preparation of a single isomer of a benzotriazole compound comprises the step of reacting a benzotriazole compound containing symmetrical substituents on the benzo ring with phosgene to produce the corresponding carbamyl chloride. The carbamyl chloride can be reacted with a timeing group of a coupling-off group of a photographic coupler to form a photographic development inhibitor releasing coupler. Such compounds are useful in photographic materials and processes.
Claims5
A color photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one benzotriazole development inhibitor releasing naphtholic wash-out coupler which forms a dye that is capable of being washed out of the photographic element upon processing comprising an amide water solubilizing group in the 2-position of the naphthol moiety wherein the benzotriazole development inhibitor is represented by the formula:
- ##STR16## wherein R.sup.1 O is an unsubstituted alkoxy group.
A color photographic element comprising a support bearing at least one photographic silver halide emulsion layer and at least one benzotriazole development inhibitor releasing naphtholic wash-out coupler which forms a dye that is capable of being washed out of the photographic element upon processing comprising an amide water solubilizing group selected from CONH.sub.2 and CONHCH.sub.3 in the 2-position of the naphthol moiety wherein the benzotriazole development inhibitor is represented by the formula:
- ##STR17## wherein R.sup.1 O is an unsubstituted alkoxy group.
Dependencies are inferred from the claim text.