Silver halide emulsions containing azaindene and amide stabilizing agents

Abstract

Abstract PHOTOGRAPHIC MATERIALS COMPRISING A LIGHT-SENSITIVE SILVER HALIDE EMULSION ELEMENT CONTAINING AN AZAINDENE EMULSION STABILIZING AGENT IN CONTACT WITH AS AN ADDITIONAL STABILIZING AGENT AN AMIDE HAVING THE FORMULA: R3-CO-N(-R1)-R2 WHEREIN EACH OF R1 AND R2 STANDS FOR HYDROGEN, LOWER ALKYL, LOWER ALKYL CARRYING A HYDROXYL GROUP, LOWER ALKYL CARRYING THE GROUP R3CONH-, OR A PHENYL GROUP, R1 TOGETHER WITH R2 STANDS FOR THE ATOMS NECESSARY TO CLOSE A PYRROLIDONE, PIPERDINE OR MORPHOLINE NUCLEUS, R3 STANDS FOR LOWER ALKYL OR THE GROUP -N(-R''1)-R''2 WHEREIN EACH OF R''1 AND R''2 HAVE THE SAME SIGNIFICANCE AS R1 AND R2, R''1 AND R''2 BOTH BEING DIFFERENT FROM HYDROGEN, OR R3 MAY REPRESENT HYDROGEN WHEN R1 OR R2 IS SUBSTITUTED ALKYL, OR R3 TOGETHER WITH R2 STANDS FOR ALKYLENE. A SYNERGISTIC EFFECT IS OBTAINED WITH REGARD TO FOG INHIBITION PARTICULARLY UPON STORAGE OF THE ELEMENT.

Inventors

• 👤 H Vandenabeele
• 👤 Munck J De
• 👤 R Thiers
• 👤 R Pollet
• 👤 R Florens
• 👤 J Willems

Bibliographic Details