Color photograhic recording material containing a coupler which releases a photographically active compound

US4870000A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Peter Bergthaller · Bensberg, DE
• Rudolf Stolzenburg · Goldkronach, DE
• Dirk Hubner · Cologne, DE

Key dates

• Filing date: Mar 21, 1988
• Grant date: Sep 26, 1989
• Expiry date: Mar 21, 2008

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/158
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A color photographic recording material containing a coupler which releases a photographically active compound. Couplers corresponding to formula (I) couple with color developers to form yellow to yellow-orange dyes and, in doing so, release the residue X as a photographically active compounds. Where X is a development inhibitor, remarkably high inter-image and edge effects can be obtained. ##STR1## in which R.sup.1 represents alkyl, a heterocyclic or carbocyclic aromatic group or -NH-CO-R.sup.2 ; PA1 R.sup.2 represents alkyl, aryl or -NH-R.sup.3 ; PA1 R.sup.3 represents alkyl or aryl; PA1 Q represents the groups to complete a fused, optionally substituted benzene or heterocyclic ring; PA1 X represents the residue of a photographically active compound; PA1 TIME represents a bond which, on reaction of the coupler with the oxidation product of a color developer, is released together with the residue X attached thereto and, in turn, releases the residue X as a photographically active compound under the development conditions; PA1 n=0 or 1.