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

US4524124A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Peter Bergthaller · Bensberg, DE
• Rudolf Stolzenburg · Goldkronach, DE
• Paul Marx · Corning, US
• Rainer Hamprecht · Odenthal, DE

Key dates

• Filing date: Jun 18, 1984
• Grant date: Jun 18, 1985
• Expiry date: Jun 18, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B29/30
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Monoazo dyes corresponding to the following formula ##STR1## are suitable for use as light-stable cyan image dyes stable to reducing agents for the dye diffusion transfer process. In the above formula: PA1 Q represents the remainder of the molecule required to complete a fused benzene or thiophene ring, which contains additional electron acceptor groups, or to complete a fused pyridine, pyrimidine, pyridazine, pyrazine or thiazole ring; PA1 G represents --OH, acyloxy; PA1 R.sup.1 represents H or one or two identical or different radicals selected from the group consisting of halogen, acyl, acylamino and --CN; PA1 Y represents H, --OH, an amino group optionally substituted by alkyl or aryl, a cyclic amino group or a group of the formula --NH--SO.sub.2 --R.sup.2 ; PA1 R.sup.2 represents alkyl, aryl, an amino group optionally substituted twice by alkyl or a cyclic amino group; PA1 n=0, 1 or 2.