Color photographic recording material containing a thiophene azo dye releaser for cyan dyes

US4579805A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Peter Bergthaller · Bensberg, DE
• Hauke Furstenwerth · Leverkusen, DE
• Rudolf Stolzenburg · Goldkronach, DE
• Paul Marx · Corning, US
• Holger Heidenreich · Cologne, DE

Key dates

• Filing date: Nov 23, 1984
• Grant date: Apr 1, 1986
• Expiry date: Nov 23, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/0059
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyes corresponding to formula I may be released imagewise from dye releasers in the dye diffusion transfer process. The dyes obtained are lightfast cyan dyes with improved spectral properties and reduced sensitivity to reducing agents ##STR1## the meanings of symbols given in formula I (A, A', G, R.sup.1, R.sup.2, R.sup.3 and R.sup.4) are indicated in the description.