US3486894A - Color photographic images utilizing ureido indazolone couplers - Google Patents

Color photographic images utilizing ureido indazolone couplers Download PDF

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Publication number
US3486894A
US3486894A US624203A US3486894DA US3486894A US 3486894 A US3486894 A US 3486894A US 624203 A US624203 A US 624203A US 3486894D A US3486894D A US 3486894DA US 3486894 A US3486894 A US 3486894A
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United States
Prior art keywords
indazolone
ureido
couplers
mol
solution
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Expired - Lifetime
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US624203A
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English (en)
Inventor
Enzo Coraluppi
Remo Magagnoli
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Ferrania SpA
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Ferrania SpA
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D231/00Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/54Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings condensed with carbocyclic rings or ring systems
    • C07D231/56Benzopyrazoles; Hydrogenated benzopyrazoles
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/32Colour coupling substances
    • G03C7/3231Couplers containing an indazolone ring

Definitions

  • the present invention refers to a process for producing color photographic images by chromogenic development of a photosensitive material in the presence of color formers called couplers of the indazolone class.
  • the color photography with the subtractive process is generally carried out by arranging on a support three layers of silver halide photographic emulsion, respectively sensitized to blue, green and red lights, and respectively containing couplers which, during the chromogenic development of the exposed element, react with the oxidation product of a p-phenylene diamine derivative to give yellow, magenta and cyan dyes.
  • couplers which, during the chromogenic development of the exposed element, react with the oxidation product of a p-phenylene diamine derivative to give yellow, magenta and cyan dyes.
  • couplers which, during the chromogenic development of the exposed element, react with the oxidation product of a p-phenylene diamine derivative to give yellow, magenta and cyan dyes.
  • magenta dyes obtained during the chromogenic development, from pyrazolone couplers, have the disadvantage of having an undesired secondary absorption peak in the blue spectral region, and this is very detrimental to color purity.
  • Italian Patent No. 464,564 suggests the use of indazolone derivatives as magenta couplers.
  • these couplers produce dyes having favorable spectral properties, both because of the absence of undesired absorption peaks in irrelevant spectrum regions and because of a characteristic, peculiar shape of the curve in the vicinity of the main absorption peak.
  • these dyes have a serious drawback, namely poor stability in the light, which shortcoming greatly reduces the possibility of their practical use.
  • ureido indazolone couplers of the general formula wherein R stands for H, alkyl, aryl or a heterocyclic radical, which may contain one or more substituents to make the molecule of the coupler anti-diffusing and, if desired, alkali-soluble in accordance with the known requirements for the use of the products in color photographic processes, couples with a usual chromogenic developer of the substituted p-phenylene diamine type to produce magenta dyes which, in addition to the abovementioned desirable absorption characteristics, a high light stability, making the reliable use thereof possible in the color photography.
  • the material was suspended in dilute hydrochoric acid and washed plentifully with water.
  • EXAMPLE 1 A sample of a silver halide emulsion photographic material was exposed and then developed in a chromogenic developer having the following formulation:
  • the developed material was washed, then processed in a bleaching bath, washed, fixed, again Washed and dried.
  • a magenta-colored image was thus obtained by the formation of a dye having a main absorption peak of about 528-530 mg.
  • EXAMPLE 2 By substituting in the chromogenic developer of the Example 1 for the coupler (1) an equal amount of the coupler (3,), a magenta-colored image was obtained by the formation of a dye having a main absorption peak of about 530-532 mg.
  • EXAMPLE 3 12 g. of the coupler (2). were brought into solution with 20 ml. of methanol, 20 ml. of a 2 N NaOH solution and 250 ml. of water. This solution was added to one kilogram of silver halide photographic emulsion, which was then spread onto a support. The photosensitive material thus obtained was exposed and then developed by means of a diethyl-p-phenylene diamine chromogenic developer. After bleaching and fixing treatment, a magenta-colored image having a main absorption peak of about 566568 In was obtained in the exposed areas.
  • EXAMPLE 4 Dyes derived from couplers Decrease in color density after exposure in iadometer after (percent)- The present The prior invention art 7 hours 30 hours 30 hours From an examination of this illustrative data it can be seen that the light storageability is significantly better for the dyes obtained from the ureido indazolone couplers of this invention.
  • a process for producing light stable, color photographic images in a silver halide emulsion layer which comprises the chromogenic development of a dye by coupling with a para-phenylene diamine developer an ureido indazolone.

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US624203A 1966-03-23 1967-03-20 Color photographic images utilizing ureido indazolone couplers Expired - Lifetime US3486894A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT3122066 1966-03-23
IT636566 1966-03-23

Publications (1)

Publication Number Publication Date
US3486894A true US3486894A (en) 1969-12-30

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US624203A Expired - Lifetime US3486894A (en) 1966-03-23 1967-03-20 Color photographic images utilizing ureido indazolone couplers

Country Status (5)

Country Link
US (1) US3486894A (en:Method)
BE (1) BE695491A (en:Method)
CH (1) CH499136A (en:Method)
DE (1) DE1572183A1 (en:Method)
GB (1) GB1182202A (en:Method)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028445A3 (en) * 2003-09-19 2005-06-02 Merck Sharp & Dohme Derivatives of n-(1h-indazolyl)- and n-(1h-indolyl)-urea as well as related compounds as modulators of the vanilloid-1 receptor (vr1) for the treatment of pain
US20090048250A1 (en) * 2002-10-25 2009-02-19 Alex Aronov Indazolinone compositions useful as kinase inhibitors

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964402A (en) * 1951-10-03 1960-12-13 Gevaert Photo Prod Nv Mono-acetyl indazolone color couplers
US3393071A (en) * 1963-10-08 1968-07-16 Gevaert Photo Prod Nv Photographic color material and process utilizing 5-pyrazolone color couplers

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2964402A (en) * 1951-10-03 1960-12-13 Gevaert Photo Prod Nv Mono-acetyl indazolone color couplers
US3393071A (en) * 1963-10-08 1968-07-16 Gevaert Photo Prod Nv Photographic color material and process utilizing 5-pyrazolone color couplers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090048250A1 (en) * 2002-10-25 2009-02-19 Alex Aronov Indazolinone compositions useful as kinase inhibitors
US7842712B2 (en) 2002-10-25 2010-11-30 Vertex Pharmaceuticals Incorporated Indazolinone compositions useful as kinase inhibitors
WO2005028445A3 (en) * 2003-09-19 2005-06-02 Merck Sharp & Dohme Derivatives of n-(1h-indazolyl)- and n-(1h-indolyl)-urea as well as related compounds as modulators of the vanilloid-1 receptor (vr1) for the treatment of pain

Also Published As

Publication number Publication date
GB1182202A (en) 1970-02-25
DE1572183A1 (de) 1970-02-19
BE695491A (en:Method) 1967-08-14
CH499136A (it) 1970-11-15

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