US2801170A - Preparation of color former dispersions - Google Patents

Preparation of color former dispersions Download PDF

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Publication number
US2801170A
US2801170A US476539A US47653954A US2801170A US 2801170 A US2801170 A US 2801170A US 476539 A US476539 A US 476539A US 47653954 A US47653954 A US 47653954A US 2801170 A US2801170 A US 2801170A
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US
United States
Prior art keywords
dispersion
solvent
coupler
color
organic
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
US476539A
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English (en)
Inventor
Paul W Vittum
Donald B Julian
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
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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
Priority to BE543744D priority Critical patent/BE543744A/xx
Application filed by Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to US476540A priority patent/US2787544A/en
Priority to US476539A priority patent/US2801170A/en
Priority to GB34887/55A priority patent/GB798512A/en
Priority to GB35055/55A priority patent/GB791353A/en
Priority to DEE11702A priority patent/DE963295C/de
Priority to FR1151479D priority patent/FR1151479A/fr
Application granted granted Critical
Publication of US2801170A publication Critical patent/US2801170A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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

Definitions

  • This invention relates to color photography and particularly to a method for incorporating couplers in silver halide emulsion layers.
  • coupler dispersions In order. to reduce to a minimum the amount of the inert ingredients in the emulsion layer and to improve the physical hardness of the coatings, it would be desirable to use smaller quantities of coupler solvent than those corresponding to the above ratios.
  • etforts have been made to prepare coupler dispersions using smaller ratios of coupler solvent, representing, for example, ratios of coupler to solventof 1 to A: or 1 to A.
  • Such low ratio dispersions have been successfully prepared in some cases using auxiliary solvents which are removed during the course of preparing. the dispersion.
  • the same technique has been applied to the preparation of coupler dispersions containing substantially no coupler solvent.
  • Couplers which may beused according to our inventionare disclosed in Jelley and Vittum U. S. Patent 2,322,027, Loria, Weissberger and Vittum U. S. Patent 2,600,788 and elsewhere.
  • High boiling coupler solvents which are used according to our invention to form the second dispersion mentioned above are organic crystalloidal materials which are substantially water-insoluble, have low molecular weight, have a boiling point'above about C. and have a high solvent action for the color-forming compound and for the dyesv formed from it and are permeable to photographic developer oxidation products in the layer in whichthey are incorporated.
  • Such materials include di-n-butylphthalate and other compounds disclosed on pages 2 and 3 of Ielley and Vittum U. S. Patent 2,322,027.
  • Low boiling organic solvents in which the color-forming compound is first dissolved and which is removed to form the substantially dry or solvent-free dispersion of coupler'in gelatin prior to mixing the dispersion of coupler with the dispersion of high boiling coupler solvent include nitromethane, nitroethane, methyl, ethyl, propyl and butyl acetates .and ethyl and butyl formate.
  • a separate dispersion of high-boiling crystalloidalcoupler solvent is made in gelatin and this dispersion and the dried dispersion of the coupler in gelatin are added to a gelatino-silver halide emulsion. Mixing these together results in a gelatino silver halide emulsion containing a dispersion of coupler in high-boiling crystalloidal coupler solvent.
  • Preparation of coating mixture 1.9 grams of the dried coupler dispersion A was added to a mixture of 25.2 cc. of water and 1.2 cc. of saponin solution. The mixture was allowed to soak for about 20 minutes and then the mixture was heated in a water bath at 40 C. 2.8 cc. of the coupler solvent dispersion B were then added and the mixture of the two dispersions was finally added to cc. of a gelatino-silver halide'emulsion.
  • the final emulsion was coated, dried, exposed and developed as in Example I and was found to produce a satisfactory yellow dye density.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Pyridine Compounds (AREA)
US476539A 1954-12-20 1954-12-20 Preparation of color former dispersions Expired - Lifetime US2801170A (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
BE543744D BE543744A (cs) 1954-12-20
US476540A US2787544A (en) 1954-12-20 1954-12-20 Method of making photographic packet emulsions
US476539A US2801170A (en) 1954-12-20 1954-12-20 Preparation of color former dispersions
GB34887/55A GB798512A (en) 1954-12-20 1955-12-06 Method of making photographic packet emulsions
GB35055/55A GB791353A (en) 1954-12-20 1955-12-07 Method of making dispersions of colour couplers for use in light-sensitive silver salt emulsions
DEE11702A DE963295C (de) 1954-12-20 1955-12-18 Verfahren zur Einlagerung eines Kupplers oder Farbstoffbildners in eine photographische Halogensilber-Gelatineemulsion
FR1151479D FR1151479A (fr) 1954-12-20 1955-12-19 Procédé pour l'incorporation de coupleurs chromogènes aux émulsions photosensibles et nouveaux produits obtenus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US476540A US2787544A (en) 1954-12-20 1954-12-20 Method of making photographic packet emulsions
US476539A US2801170A (en) 1954-12-20 1954-12-20 Preparation of color former dispersions

Publications (1)

Publication Number Publication Date
US2801170A true US2801170A (en) 1957-07-30

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Family Applications (2)

Application Number Title Priority Date Filing Date
US476539A Expired - Lifetime US2801170A (en) 1954-12-20 1954-12-20 Preparation of color former dispersions
US476540A Expired - Lifetime US2787544A (en) 1954-12-20 1954-12-20 Method of making photographic packet emulsions

Family Applications After (1)

Application Number Title Priority Date Filing Date
US476540A Expired - Lifetime US2787544A (en) 1954-12-20 1954-12-20 Method of making photographic packet emulsions

Country Status (5)

Country Link
US (2) US2801170A (cs)
BE (1) BE543744A (cs)
DE (1) DE963295C (cs)
FR (1) FR1151479A (cs)
GB (2) GB798512A (cs)

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3092495A (en) * 1960-06-09 1963-06-04 Gen Aniline & Film Corp Lower alkyl lactate coupler solvents
US3244518A (en) * 1960-05-19 1966-04-05 Gen Aniline & Film Corp Process for obtaining multicolor images and a multilayer sheet for use therein
US3244524A (en) * 1960-03-01 1966-04-05 Gen Aniline & Film Corp U. v. absorbing composition
US3515557A (en) * 1965-04-12 1970-06-02 Du Pont Photographic color film and process of making same
EP0124795A2 (en) 1983-04-11 1984-11-14 Fuji Photo Film Co., Ltd. Silver halide photographic emulsion
EP0200502A2 (en) 1985-04-30 1986-11-05 Konica Corporation Light-sensitive silver halide color photographic material
EP0204530A2 (en) 1985-05-31 1986-12-10 Konica Corporation Method for forming direct positive color image
EP0228914A2 (en) 1985-12-28 1987-07-15 Konica Corporation Method of processing lightsensitive silver halide color photographic material
EP0320939A2 (en) 1987-12-15 1989-06-21 Fuji Photo Film Co., Ltd. Silver halide color photographic material
US4970139A (en) * 1989-10-02 1990-11-13 Eastman Kodak Company Methods of preparation of precipitated coupler dispersions with increased photographic activity
US5008179A (en) * 1989-11-22 1991-04-16 Eastman Kodak Company Increased activity precipitated photographic materials
EP0452984A1 (en) 1985-09-25 1991-10-23 Fuji Photo Film Co., Ltd. Process for processing silver halide color photographic material for photographing use
US5089380A (en) * 1989-10-02 1992-02-18 Eastman Kodak Company Methods of preparation of precipitated coupler dispersions with increased photographic activity
US5468604A (en) * 1992-11-18 1995-11-21 Eastman Kodak Company Photographic dispersion
EP0703493A1 (de) 1994-09-21 1996-03-27 Agfa-Gevaert AG Farbfotografisches Silberhalogenidmaterial
US5585230A (en) * 1995-03-23 1996-12-17 Eastman Kodak Company Cyan coupler dispersion with improved stability
US5726003A (en) * 1996-08-15 1998-03-10 Eastman Kodak Company Cyan coupler dispersion with increased activity
US5770352A (en) * 1996-04-18 1998-06-23 Eastman Kodak Company High activity photographic dispersions with ultra low levels of permanent solvent
US5830632A (en) * 1996-10-31 1998-11-03 Eastman Kodak Company Photographic element containing dispersions of high dye-yield couplers having improved photographic activity
US5879867A (en) * 1997-08-22 1999-03-09 Eastman Kodak Company Silver halide light-sensitive element
US5891613A (en) * 1997-08-22 1999-04-06 Eastman Kodak Company Silver halide light-sensitive element
US5932404A (en) * 1996-12-18 1999-08-03 Eastman Kodak Company Silver halide photographic material containing a polymer with a photographically useful group which is rendered non-diffusible by cross-linking
US6420103B1 (en) 1999-03-10 2002-07-16 Eastman Kodak Company Photographic element
US20050089806A1 (en) * 2003-10-24 2005-04-28 Zengerle Paul L. Method of preparation of direct dispersions of photographically useful chemicals
US7223529B1 (en) 2006-05-05 2007-05-29 Eastman Kodak Company Silver halide light-sensitive element

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2949360A (en) * 1956-08-31 1960-08-16 Eastman Kodak Co Photographic color former dispersions
US3012885A (en) * 1956-12-03 1961-12-12 Eastman Kodak Co Pressure image transfer process
BE590403A (cs) * 1959-04-30
DE3031404A1 (de) * 1980-08-20 1982-04-01 Agfa-Gevaert Ag, 5090 Leverkusen Verfahren zur herstellung von dispersionen und fotografische materialien

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322027A (en) * 1940-02-24 1943-06-15 Eastman Kodak Co Color photography
US2478400A (en) * 1945-08-17 1949-08-09 Eastman Kodak Co Silver halide photographic emulsion with developer and color coupler dispersed therein

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE440854A (cs) * 1939-01-23
US2698794A (en) * 1950-04-15 1955-01-04 Eastman Kodak Co Mixed packet photographic emulsions

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2322027A (en) * 1940-02-24 1943-06-15 Eastman Kodak Co Color photography
US2478400A (en) * 1945-08-17 1949-08-09 Eastman Kodak Co Silver halide photographic emulsion with developer and color coupler dispersed therein

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3244524A (en) * 1960-03-01 1966-04-05 Gen Aniline & Film Corp U. v. absorbing composition
US3244518A (en) * 1960-05-19 1966-04-05 Gen Aniline & Film Corp Process for obtaining multicolor images and a multilayer sheet for use therein
US3092495A (en) * 1960-06-09 1963-06-04 Gen Aniline & Film Corp Lower alkyl lactate coupler solvents
US3515557A (en) * 1965-04-12 1970-06-02 Du Pont Photographic color film and process of making same
EP0124795A2 (en) 1983-04-11 1984-11-14 Fuji Photo Film Co., Ltd. Silver halide photographic emulsion
EP0200502A2 (en) 1985-04-30 1986-11-05 Konica Corporation Light-sensitive silver halide color photographic material
EP0204530A2 (en) 1985-05-31 1986-12-10 Konica Corporation Method for forming direct positive color image
EP0452984A1 (en) 1985-09-25 1991-10-23 Fuji Photo Film Co., Ltd. Process for processing silver halide color photographic material for photographing use
EP0228914A2 (en) 1985-12-28 1987-07-15 Konica Corporation Method of processing lightsensitive silver halide color photographic material
EP0320939A2 (en) 1987-12-15 1989-06-21 Fuji Photo Film Co., Ltd. Silver halide color photographic material
US5089380A (en) * 1989-10-02 1992-02-18 Eastman Kodak Company Methods of preparation of precipitated coupler dispersions with increased photographic activity
US4970139A (en) * 1989-10-02 1990-11-13 Eastman Kodak Company Methods of preparation of precipitated coupler dispersions with increased photographic activity
US5008179A (en) * 1989-11-22 1991-04-16 Eastman Kodak Company Increased activity precipitated photographic materials
EP0454844B1 (en) * 1989-11-22 1998-02-04 Eastman Kodak Company Increased activity precipitated photographic materials
US5468604A (en) * 1992-11-18 1995-11-21 Eastman Kodak Company Photographic dispersion
EP0703493A1 (de) 1994-09-21 1996-03-27 Agfa-Gevaert AG Farbfotografisches Silberhalogenidmaterial
US5585230A (en) * 1995-03-23 1996-12-17 Eastman Kodak Company Cyan coupler dispersion with improved stability
US5770352A (en) * 1996-04-18 1998-06-23 Eastman Kodak Company High activity photographic dispersions with ultra low levels of permanent solvent
US5726003A (en) * 1996-08-15 1998-03-10 Eastman Kodak Company Cyan coupler dispersion with increased activity
US5830632A (en) * 1996-10-31 1998-11-03 Eastman Kodak Company Photographic element containing dispersions of high dye-yield couplers having improved photographic activity
US5932404A (en) * 1996-12-18 1999-08-03 Eastman Kodak Company Silver halide photographic material containing a polymer with a photographically useful group which is rendered non-diffusible by cross-linking
US5879867A (en) * 1997-08-22 1999-03-09 Eastman Kodak Company Silver halide light-sensitive element
US5891613A (en) * 1997-08-22 1999-04-06 Eastman Kodak Company Silver halide light-sensitive element
US6420103B1 (en) 1999-03-10 2002-07-16 Eastman Kodak Company Photographic element
US20050089806A1 (en) * 2003-10-24 2005-04-28 Zengerle Paul L. Method of preparation of direct dispersions of photographically useful chemicals
US7338756B2 (en) 2003-10-24 2008-03-04 Eastman Kodak Company Method of preparation of direct dispersions of photographically useful chemicals
US7223529B1 (en) 2006-05-05 2007-05-29 Eastman Kodak Company Silver halide light-sensitive element

Also Published As

Publication number Publication date
BE543744A (cs)
GB798512A (en) 1958-07-23
DE963295C (de) 1957-05-02
GB791353A (en) 1958-02-26
FR1151479A (fr) 1958-01-30
US2787544A (en) 1957-04-02

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