Silver halide emulsion containing naphthol colour couplers for cyan

Abstract

Abstract CYAN-FORMING COLOR COUPLERS SUITABLE FOR USE IN NEGATIVE SILVER HALIDE COLOR MATERIALS AND THE USE OF SUCH COLOR COUPLERS IN AN INTEGRAL MASK PROCESS ARE DESCRIBED. THE COLOR COUPLERS HAVE THE STRUCTURE 2-((2-X,5-(Y-SO2-)PHENYL)-NH-CO-),4-Z-NAPHTH-1-OL WHEREIN: Z IS A HYDROGEN ATOM OR A HALOGEN ATOM, X IS A HALOGEN ATOM, AN ALKYLOXY GROUP, AN ALKYLTHIO GROUP, AN ALKYLSUFONYL GROUP, AN ARYLOXY GROUP, AN ARYLTHIO GROUP, AN ARYLSUFONYL GROUP, A MONOALKYLAMINO GROUP, A DIALKYLAMINO GROUP OR AN AMINO GROUP, THE NITROGEN ATOM OF WHICH MAKES PART OF THE RING ATOMS OF A SATURATED HETEROCYCLIC NUCLEUS, Y IS A ALKYL RADICAL, A MONOALKYLAMINO GROUP, A DIALKYLAMINO GROUP OR AN AMINO GROUP, THE NITROGEN ATOM OF WHICH MAKES PART OF THE RING ATOMS OF A SATURATED HETEROCYCLIC NUCLEUS, AT LEAST ONE OF THE ALKYL RADICALS IN THE ABOVE GROUPS BEING AN ALIPHATIC RADICAL CONTAINING FROM 5 TO 20 CARBON ATOMS.

Inventors

• 👤 Hector Alfons Vanden Eynde
• 👤 Marcel Karel Van Doorselaer
• 👤 Arthur Henri De Cat
• 👤 Rigobert Otto
• 👤 Friedrich-Wilhelm Kunitz
• 👤 Walter Schulte

Bibliographic Details