Photographic recording material containing an aldehyde remover

US4414309A · kind A · utility

Assignee

• Agfa-Gavaert · BE

Inventors

• Hans Langen · Frechen, DE
• Lothar Rosenhahn · Neunburg vorm Wald, DE
• Erich Wolff · Solingen, DE

Key dates

• Filing date: Nov 24, 1982
• Grant date: Nov 8, 1983
• Expiry date: Nov 24, 2002

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C7/39252
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Compounds corresponding to the following general formula ##STR1## wherein R.sup.1 represents hydrogen, an aliphatic or cycloaliphatic group, an aralkyl group, an aryl group, a heterocyclic group or one of the following groups: --CO--alkyl, --CO--aryl, --CO--heterocyclic group, --SO.sub.2 --alkyl, --SO.sub.2 --aryl, --CO--O--alkyl, --CO--NH--NH.sub.2, ##STR2## and R.sup.2 represents hydrogen, an aliphatic or cycloaliphatic group, an aralkyl group, an aryl group, alkoxy, aroxy, carboxyl, carbamoyl, alkoxycarbonyl, an alkyl or aryl group attached through a carbonyl group, cyanogen, an amino group optionally substituted by alkyl, aralkyl, aryl or acyl, or a cyclic amino group may be used as additives in the layers of color photographic recording materials to improve the stability of color couplers, in particular magenta couplers, against formaldehyde.