Alkaline processing composition containing a soluble silver...

Details Alkaline processing composition containing a soluble silver... Alkaline processing composition containing a soluble silver...

G - Physics

03

C

96/100, 96/23, 9

G03C 5/38 (2006.01) G03C 8/36 (2006.01)

Patent

CA 1071452

Abstract of the Disclosure Difunctional compounds wherein one of said functions is a hard or soft atom that ionizes to the corresponding anion in alkaline solution to combine with silver cation and the other of said functions is a non- ionizable soft base that additionally combines with said silver cation are employed as silver halids complexing agents in photography. In a preferred embodiment, the difunctional compound possesses (a) an O, N or C atom that ionizes to the corresponding O?, N? or C? anion in basic solution and (b) and -S- containing moiety excluding -SH and moieties that from -SH in basic solution wherein the -S- of said moiety is positioned alpha, beta, gamma, delta, epsilon or zeta to said anion.

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