Color photographic recording material

US6025121A · kind A · utility

Assignee

• Agfa-Gevaert NV · BE

Inventors

• Klaus Sinzger · Leverkusen, DE
• Stefan Herrmann · Bonn, DE
• Michael Missfeldt · Leichlingen, DE

Key dates

• Filing date: Aug 27, 1998
• Grant date: Feb 15, 2000
• Expiry date: Aug 27, 2018

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B23/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A color photographic recording material contains at least one photosensitive silver halide emulsion layer which is spectrally sensitized with a monomethine cyanine dye of the formula I ##STR1## in which: R.sup.1 denotes a benzothiophene radical which is coupled by way of the 2-, 3-, 4-, 5-, 6- or 7-position thereof to the benzo ring of the benzothiazole group, PA1 R.sup.2 and R.sup.3 (the same or different) denote sulphoalkyl, carboxyalkyl, --(CH.sub.2).sub.n --SO.sub.2 --NH--SO.sub.2 -alkyl, --(CH.sub.2).sub.n --SO.sub.2 --NH--CO-alkyl, --(CH.sub.2).sub.n --CO--NH--SO.sub.2 -alkyl or --(CH.sub.2).sub.n --CO--NH--CO-alkyl and (n=1-6); PA1 R.sup.4 to R.sup.6 (the same or different) denote hydrogen, halogen, --CN, --CF.sub.3, alkyl, alkoxy, aryl or a heterocyclic group; or PA1 R.sup.5 together with R.sup.4 or R.sup.6 denotes the remainder which is necessary to complete an optionally substituted condensed-on benzene or naphthalene ring; PA1 M denotes a cation necessary to balance the charge. The recording material has increased blue sensitivity.