Photographic element containing high dye-yield couplers having improved reactivity

US5447819A · kind A · utility

Assignee

• EASTMAN KODAK COMPANY · US

Inventors

• Jared B. Mooberry · Rochester, US
• James J. Seifert · Hilton, US
• David Hoke · Rochester, US
• Zheng Z. Wu · Penfield, US
• David T. Southby · Rochester, US
• Frank D. Coms · Fairport, US

Key dates

• Filing date: May 27, 1994
• Grant date: Sep 5, 1995
• Expiry date: May 27, 2014

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S430/156
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

The invention provides a photographic element comprising a support bearing a photographic silver halide emulsion layer having associated therewith a high dye-yield coupler having the formula: EQU COUP--(T).sub.m --L--DYE where COUP is the parent group of the coupler capable of reacting at the coupling position with oxidized color developer to form a first dye, T is one or more timing groups with m=1 or 2, L is a linking group selected from the group consisting of --OC(O)--, --OC(S)--, --SC(O)--, --SC(S)--, or --OC(.dbd.N SO.sub.2 R)--, where R is substituted or unsubstituted alkyl or aryl, and DYE is a second dye or precursor thereof, wherein there is present at least one T group that contains a substituent having the formula: EQU --(LINK).sub.p --A--B--(C--D).sub.n wherein: PA1 LINK is an alkylene group capable of linking the above group to the group T, where p=0 or 1; PA1 A is a member selected from the group consisting of --NHCO--, --N(R')C(O)N(R--)--, --CONH--, --NR'SO.sub.2 --, --SO.sub.2 NR'--, and --OPO.sub.2 --, where R' is hydrogen or substituted or unsubstituted alkyl; PA1 B is a substituted or unsubstituted aromatic carbocyclic or heterocyclic group; PA1 C is a solubiliz…