Color photographic recording material containing new colored cyan couplers

US5075207A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Hans Langen · Frechen, DE
• Gunter Renner · Bensberg, DE
• Jurgen Plamper · Leverkusen, DE

Key dates

• Filing date: May 2, 1991
• Grant date: Dec 24, 1991
• Expiry date: May 2, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C7/3225
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Colored cyan couplers corresponding to formula II are eminently suitable for masking the yellow secondary density of cyan dyes. The reproduction of blues and yellows is thus improved. The colored cyan couplers of formula II are preferably used together with phenolic cyan couplers bearing a phenylureido group in the 2-position and an acylamino group with a ballast group in the 5-position ##STR1## In formula II: CC represents a cyan coupler group to the coupling position of which L is attached; PA1 L is a bifunctional connecting group; PA1 Q.sup.1, Q.sup.2 represent H or photographially inert substituents; PA1 R represents a coupling component such that the compound of formula II is a yellow dye. ##STR2## in which R.sup.3 is alkyl, aryl, carboxyl, carbamoyl, acylamino, anilino; PA1 R.sup.4 is H, alkyl, aryl, a heterocyclic group; PA1 R.sup.5, R.sup.6 (same or different) represent -CO-alkyl, -CO-aryl, -CO-alkoxy, carbamoyl, -CN; PA1 represents O, S, NH; PA1 Z is the group required to complete a 5- or 6-membered carbocyclic or heterocyclic ring.