Color photographic silver halide material

US6074809A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Lydia Simon · Uerdingen, DE
• Gunter Helling · Siegburg, DE
• Beate Weber · Leichlingen, DE

Key dates

• Filing date: Dec 9, 1998
• Grant date: Jun 13, 2000
• Expiry date: Dec 9, 2018

Classification

• Technology area (CPC G): Physics
• CPC primary: G03C7/3275
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A color photographic silver halide material having a support, at least one photosensitive silver halide emulsion layer and a polymeric cyan coupler associated with the photosensitive silver halide emulsion layer, which coupler contains polymerised units of the formula (I) ##STR1## in which X means a hydrogen atom or a group eliminable under chromogenic development conditions, PA1 R.sub.1 means a hydrogen or halogen atom, an optionally substituted alkyl, aryl or acylamino group, PA1 R.sub.2 means an optionally substituted alkyl, aryl or heterocyclic group and PA1 n means a number from 0 to 3, is distinguished by improved stability of the cyan dye.