Photographic elements containing scavengers for oxidized develop

Details Photographic elements containing scavengers for oxidized develop Photographic elements containing scavengers for oxidized develop

1995-02-15

1996-10-01

Letscher, Geraldine

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Identified radiation sensitive composition with color...

430504, 430505, G03C 108, G03C 726, G03C 732

Patent

active

055610358

ABSTRACT:
An improved photographic element comprises a support bearing at least one silver halide emulsion layer having associated therewith a pyrocatechol compound that functions as a scavenger for oxidized developing agent. The pyrocatechol compound has sufficient bulk that it is substantially non-diffusible in the photographic element and has in the four-position thereof a tertiary carbamoyl substituent. These scavenger compounds exhibit very high activity, have excellent stability upon long-term storage and do not leave colored residues after processing.

REFERENCES:
patent: 4175968 (1979-11-01), Credner et al.
patent: 4252893 (1981-02-01), Iwamuro et al.
patent: 4474874 (1984-10-01), Hirano et al.
patent: 4476219 (1984-10-01), Sakanoue et al.

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