Color photographic recording material containing dye-releasers releasing 6-arylazo-2-amino-3-pyridinol dyes which are chelatable with metal ions

US4579817A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Peter Bergthaller · Bensberg, DE
• Gerhard Wolfrum · Waldershof, DE
• Holger Heidenreich · Cologne, DE

Key dates

• Filing date: Aug 8, 1984
• Grant date: Apr 1, 1986
• Expiry date: Aug 8, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/00
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Dyes corresponding to general formula (I) are released imagewise from corresponding dye-releasers in the dye diffusion transfer process. They react with nickel ions to form lightfast, cyan dye-metal complexes having advantageous spectral properties: ##STR1## wherein Q represents the group required for completing an optionally substituted phenyl or naphthyl group; PA1 X represents --S--, --SO.sub.2 --, --SO.sub.2 --NR.degree.-- or --SO.sub.2 --O--; PA1 R.degree. represents H or alkyl; and PA1 R.sup.1 represents an aliphatic, araliphatic or a carbocyclic or heterocyclic aromatic group or, when X represents --SO.sub.2 --NR.degree.--, R.sup.1 represents hydrogen.