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US5075207A Expired / Lapsed US ⏱️ 0.0 years remaining

Color photographic recording material containing new colored cyan couplers

Assignee: AgfaPhoto GmbH
•
Filing: 1991-05-02
•
Granted: 1991-12-24
•
Expires: 2011-05-02
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Abstract

Abstract Colored cyan couplers corresponding to formula II are eminently suitable for masking the yellow secondary density of cyan dyes. The reproduction of blues and yellows is thus improved. The colored cyan couplers of formula II are preferably used together with phenolic cyan couplers bearing a phenylureido group in the 2-position and an acylamino group with a ballast group in the 5-position ##STR1## In formula II: CC represents a cyan coupler group to the coupling position of which L is attached; L is a bifunctional connecting group; Q 1 , Q 2 represent H or photographially inert substituents; R represents a coupling component such that the compound of formula II is a yellow dye. ##STR2## in which R 3 is alkyl, aryl, carboxyl, carbamoyl, acylamino, anilino; R 4 is H, alkyl, aryl, a heterocyclic group; R 5 , R 6 (same or different) represent -CO-alkyl, -CO-aryl, -CO-alkoxy, carbamoyl, -CN; represents O, S, NH; Z is the group required to complete a 5- or 6-membered carbocyclic or heterocyclic ring.

Inventors

  • 👤 Hans Langen
  • 👤 Gunter Renner
  • 👤 Jurgen Plamper

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 20:53
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/333; G03C7/3335; G03C7/3225

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 193 words
A color photographic recording material comprising at least one photographic silver halide emulsion layer which is applied to a layer support and with which a colorless cyan coupler and a colored cyan coupler are associated, characterized in that the colorless cyan coupler corresponds to formula I below ##STR28## in which X is H or a group releasable during the coupling reaction; R 1 is a heterocyclic group or aryl; R 2 is a ballast group; and in that the colored cyan coupler corresponds to formula II: ##STR29## in which CC is a cyan coupler residue to the coupling position of which L is attached; L is a bifunctional connecting group; Q 1 , Q 2 represent H or photographically inert substituents; R represents a coupling component having a structure corresponding to one of formula III, IV and V: ##STR30## in which R 3 is alkyl, aryl, carboxyl, carbamoyl, acylamino, anilino; R 4 is H, alkyl, aryl, a heterocyclic group; R 5 , R 6 (same or different) represent --CO-alkyl, --CO-aryl, --CO-alkoxy, carbamoyl, --CN; Y represents O, S, NH; Z is the group required to complete a 5- or 6-membered carbocyclic or heterocyclic ring.
Claim 2
Dependent Claim 193 words
A color photographic recording material comprising at least one photographic silver halide emulsion layer which is applied to a layer support and with which a colorless cyan coupler and a colored cyan coupler are associated, characterized in that the colorless cyan coupler corresponds to formula I below ##STR28## in which X is H or a group releasable during the coupling reaction; R 1 is a heterocyclic group or aryl; R 2 is a ballast group; and in that the colored cyan coupler corresponds to formula II: ##STR29## in which CC is a cyan coupler residue to the coupling position of which L is attached; L is a bifunctional connecting group; Q 1 , Q 2 represent H or photographically inert substituents; R represents a coupling component having a structure corresponding to one of formula III, IV and V: ##STR30## in which R 3 is alkyl, aryl, carboxyl, carbamoyl, acylamino, anilino; R 4 is H, alkyl, aryl, a heterocyclic group; R 5 , R 6 (same or different) represent --CO-alkyl, --CO-aryl, --CO-alkoxy, carbamoyl, --CN; Y represents O, S, NH; Z is the group required to complete a 5- or 6-membered carbocyclic or heterocyclic ring.
Claim 3
Dependent Claim 83 words
A recording material as claimed in claim 1, characterized in that the cyan coupler residue represented by CC in formula II generally has the following structure; ##STR31## in which a represents H, halogen or alkyl; b represents alkyl or acylamino; or a and b together represent the group required to complete a fused, optionally substituted, carbocyclic or heterocyclic ring and c is an acylamino group in the case of a phenolic coupler and a carbamoyl group in the case of a naphtholic coupler.

References Cited (Backward Citations)

US4294900A Cited
JPS62168142A Cited
US4833069A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1994-12-23 1995-06-24 1995-12-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1998-12-23 1999-06-24 1999-12-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2002-12-23 2003-06-24 2003-12-24 $7700.00 Window Closed / Lapsed

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