Color photographic recording material containing a color coupler of the pyrazoloazole series

US4835094A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Erich Wolff · Solingen, DE
• Hans-Joachim Schumann · Neunburg vorm Wald, DE

Key dates

• Filing date: Sep 30, 1987
• Grant date: May 30, 1989
• Expiry date: Sep 30, 2007

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C7/3835
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Color photographic images having advantageous sensitometric properties, in particular high maximum magenta color density, can be obtained by use of a color photographic recording material containing a pyrazoloazole type magenta coupler of formula I EQU Q--L--COOH I In the formula PA0 Q denotes the bicyclic group capable of color coupling in a pyrazolo[3,2-c]-1,2,4-triazole magenta coupler and PA0 L denotes a linking member which is not split off in the color coupling reaction and which cointains a ballast residue unless a ballast residue which cannot be split off is attached to the non-coupling ring of the bicyclic group Q.