US2945761A - Reactivity of couplers incorporated in photographic emulsions - Google Patents

Reactivity of couplers incorporated in photographic emulsions Download PDF

Info

Publication number
US2945761A
US2945761A US674621A US67462157A US2945761A US 2945761 A US2945761 A US 2945761A US 674621 A US674621 A US 674621A US 67462157 A US67462157 A US 67462157A US 2945761 A US2945761 A US 2945761A
Authority
US
United States
Prior art keywords
amino groups
per liter
reactivity
solution
developer
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US674621A
Other languages
English (en)
Inventor
Weissberger Arnold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US674621A priority Critical patent/US2945761A/en
Priority to FR1200657D priority patent/FR1200657A/fr
Application granted granted Critical
Publication of US2945761A publication Critical patent/US2945761A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/388—Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/407—Development processes or agents therefor
    • G03C7/413—Developers

Definitions

  • the concentration of the p-alkylphenol or other hydroxy compound in the developer should-be from about 0.1 gram to about grams per liter. A preferred amount is about 1 gram per liter of developer.
  • My invention is useful 'with emulsions containing any of the couplers described in Jelley and Patent 2,322,027 or 'Fierke and Che'chak U'.S.Patent 2,801,171.
  • the following couplers are typical of those which may be incorporated in the emulsion.
  • N-(4 benzoylacetaminobenzenesulfonyl) N (7- phenylpropyl)-p-toluidine (U.S. Patent 2,298,443).
  • Example 1 One hundred grams of couplers Nos. 1 to 7 were each dissolved in 250 cc. of ethyl acetate at the reflux tem perature of ethyl acetate. The solutions were poured into a solution containing 800 cc. of 10% gelatin solution and cc. of 5% Alkanol B solution (sodium triisopropyl naphthalene sulfonate) and then milled five times in a colloid mill. Fifty cc. of 'water was used to rinse the mill. The dispersions were set up on a chilled plate at 40 F., noodled and air-dried at 78 C. and 50% relative humidity.
  • Alkanol B solution sodium triisopropyl naphthalene sulfonate
  • Example 2 The emulsion coatings of Example 1 were exposed and developed in a developer of the following composition:
  • Samples of the coatings were also exposed and developed in a developer of the same composition to which had been added 1 gram per liter of p-n-amylphenol.
  • Example 3 Devel- Devel- Devel- D evel- Developer Deveioper oper p oper Coupler oper p-amyl oper n-octyl tert.an1- -sec.-
  • the compounds of my invention are of value for incorporation in developers in which the coupler is incorporated in the developing solution.
  • developers of this type there is a great increase in dye density, particularly in the denser regions of the scale.
  • the p-alkylphenols may also be incorporated in black-and-white developers.
  • couplers or folor-forming compounds used in the process of my invention are of the type which couple upon development with the oxidation product of primary aromatic amino developing agents.
  • An aqueous photographic color developing solution capable of producing dye images of increased density, comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to grams 4 per liter of solution of a hydroxy compound selected from the class consisting of p-alkylphenols containing from 7 to 11 carbon atoms, in which the alkyl group contains from 1 to 5 carbon atoms, an n-octyl alcohol.
  • An aqueous photographic color developing solution capable of producing dye images of increased density, comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to 15 grams per liter of solution of a p-alkylphenol containing from 7 to 11 carbon atoms, in which the alkyl group contains from 1 to 5 carbon atoms.
  • An aqueous photographic color developing solution capable of producing dye images of increased density comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to 15 grams per liter of solution of p-n-amylphenol.
  • An aqueous photographic color developing solution capable of producing dye images of increased density, comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to 15 grams 'per liter of solution of p-cresol.
  • An aqueous photographic color developing solution capable of producing dye images of increased density, comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to 15 grams per liter of solution of p-tert. amylphenol.
  • An aqueous photographic color developing solution capable of producing dye images of increased density comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to 15 grams per liter of solution of p-sec. butylphenol. 7.
  • An aqueous photographic color developing solution capable of producing dye images of increased density comprising an aromatic amine developing agent containing only two amino groups, said amino groups being in para relationship and at least one of said amino groups being a primary amino group, and from 0.1 to 15 grams per liter of solution of n-octyl alcohol.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
US674621A 1957-07-29 1957-07-29 Reactivity of couplers incorporated in photographic emulsions Expired - Lifetime US2945761A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
US674621A US2945761A (en) 1957-07-29 1957-07-29 Reactivity of couplers incorporated in photographic emulsions
FR1200657D FR1200657A (fr) 1957-07-29 1958-07-28 Nouveau révélateur pour la photographie en couleurs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US674621A US2945761A (en) 1957-07-29 1957-07-29 Reactivity of couplers incorporated in photographic emulsions

Publications (1)

Publication Number Publication Date
US2945761A true US2945761A (en) 1960-07-19

Family

ID=24707309

Family Applications (1)

Application Number Title Priority Date Filing Date
US674621A Expired - Lifetime US2945761A (en) 1957-07-29 1957-07-29 Reactivity of couplers incorporated in photographic emulsions

Country Status (2)

Country Link
US (1) US2945761A (fr)
FR (1) FR1200657A (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285312B (de) * 1963-10-26 1968-12-12 Agfa Ag Verfahren zur Entwicklungsbeschleunigung eines mehrschichtigen farbphotographischen Materials
US4965179A (en) * 1985-04-19 1990-10-23 Fuji Photo Film Co., Ltd. Silver halide color photographic material

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486440A (en) * 1946-01-10 1949-11-01 Gen Aniline & Film Corp Production of phenazonium dyestuff images
US2594917A (en) * 1949-12-16 1952-04-29 Gen Aniline & Film Corp Suppression of proximity development with azine color developers
US2835579A (en) * 1955-08-31 1958-05-20 Eastman Kodak Co N-alkyl and acylphenol coupler solvents for color photography

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2486440A (en) * 1946-01-10 1949-11-01 Gen Aniline & Film Corp Production of phenazonium dyestuff images
US2570116A (en) * 1946-01-10 1951-10-02 Gen Aniline & Film Corp Color developers for the production of azine dye images
US2594917A (en) * 1949-12-16 1952-04-29 Gen Aniline & Film Corp Suppression of proximity development with azine color developers
US2835579A (en) * 1955-08-31 1958-05-20 Eastman Kodak Co N-alkyl and acylphenol coupler solvents for color photography

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1285312B (de) * 1963-10-26 1968-12-12 Agfa Ag Verfahren zur Entwicklungsbeschleunigung eines mehrschichtigen farbphotographischen Materials
US4965179A (en) * 1985-04-19 1990-10-23 Fuji Photo Film Co., Ltd. Silver halide color photographic material

Also Published As

Publication number Publication date
FR1200657A (fr) 1959-12-23

Similar Documents

Publication Publication Date Title
US2401713A (en) Color photography
US4292400A (en) Photographic silver halide development in the presence of thioether development activators
EP0029722A1 (fr) Procédé pour le développement d'un matériau photographique en couleurs aux halogénures d'argent
US3141771A (en) Aldehyde scavengers for photographic silver halide developers
US4865956A (en) Photographic elements containing a bleach accelerator precursor
US2356486A (en) Stain prevention in color photography
US2933391A (en) Photographic emulsions containing 5-pyrazolone coupler compounds
US2725290A (en) Development of multi-layer color films with developers containing mercapto azoles
JPS5814668B2 (ja) シヤシンヨウゲンゾウヤク
US2945761A (en) Reactivity of couplers incorporated in photographic emulsions
US2478400A (en) Silver halide photographic emulsion with developer and color coupler dispersed therein
US4760016A (en) Silver halide color photographic light-sensitive material
US3189452A (en) Color-forming photographic process utilizing a bleach-fix followed by a bleach
US3113864A (en) Reducing fog in reversal color films processed in developers containing couplers
US2937086A (en) Multilayer reversal color material
US3161513A (en) Photographic developer compositions containing an antistain agent
JPS6335970B2 (fr)
US2356475A (en) Phenolic and naphtholic couplers containing sulphonamide groups
GB666107A (en) Improvements in colour photography
US2596755A (en) Aromatic color couplers containing mercaptan and hydroxyl groups
US2544640A (en) Mixed grain photographic emulsions
US4710454A (en) Photographic recording material and a process for the production of photographic images
US4514494A (en) Photographic color material incorporating developing agents for color development
US3126282A (en) Najcoj-hzo
US2133937A (en) Color photography