Composition for developing an exposed photographic product havin

Details Composition for developing an exposed photographic product havin Composition for developing an exposed photographic product havin

1996-03-01

1997-08-12

Le, Hoa Van

Radiation imagery chemistry: process, composition, or product th

Post imaging processing

Physical developing

430416, 430464, 430477, 430479, G03C 558

Patent

active

056564155

ABSTRACT:
A novel inorganic composition for developing silver halide photographic products has improved stability in air. The composition comprises at least one oxidizable metallic ion, ethylenediamine tetraacetic acid and at least one additional complexing agent of formula (I): ##STR1## wherein R.sup.1 and R.sup.2 are each independently a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, a hydroxyl group, or a hydroxyalkyl group, R.sup.3 is --COOM wherein M is hydrogen or a counter-ion such as lithium, sodium or potassium, or --CONR.sup.4 R.sup.5 wherein R.sup.4 and R.sup.5 are each independently a hydrogen atom, an alkyl group of 1 to 10 carbon atoms, and n, p and q are independently 1, 2 or 3.

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Research Disclosure 12142 (May 1974).
Research Disclosure 12440 (Aug. 1974).

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