[go: up one dir, main page]

GB1193349A - Dispersing Colour Couplers - Google Patents

Dispersing Colour Couplers

Info

Publication number
GB1193349A
GB1193349A GB4926367A GB4926367A GB1193349A GB 1193349 A GB1193349 A GB 1193349A GB 4926367 A GB4926367 A GB 4926367A GB 4926367 A GB4926367 A GB 4926367A GB 1193349 A GB1193349 A GB 1193349A
Authority
GB
United Kingdom
Prior art keywords
colour coupler
mixing
aqueous acid
acid medium
colour
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
Application number
GB4926367A
Inventor
James Arthur Townsley
Roy Trunley
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford Ltd
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 Ilford Ltd filed Critical Ilford Ltd
Priority to GB4926367A priority Critical patent/GB1193349A/en
Priority to CH1590568A priority patent/CH501249A/en
Priority to DE19681805880 priority patent/DE1805880A1/en
Priority to FR1587050D priority patent/FR1587050A/fr
Priority to BE723170D priority patent/BE723170A/xx
Publication of GB1193349A publication Critical patent/GB1193349A/en
Expired 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1,193,349. Dispersing colour couplers. ILFORD Ltd. Nov. 19, 1968 [Oct. 30, 1967], No. 49263/67. Heading G2C. A process for the production of a silver halide emulsion having a colour coupler dispersed therein comprises dissolving a colour coupler, which contains no sulphonic acid or carboxylic acid solubilising groups and which is insoluble in water and acid media but soluble in alkaline media, in a mixture of a water miscible organic solvent and aqueons alkali, homogeneously mixing the colour coupler solution with an aqueous acid medium, and including in the latter mixture a protective colloid, thereby to form a dispersion of precipitated colour coupler and then mixing the dispersion with a liquid silver halide emulsion. In the examples gelatine is the protective colloid. The protective colloid may be present initially in the aqueous acid medium or may be added to the mixture after the colour coupler has been precipitated. The water miscible solvent is preferably ethanol or methanol, A dispersing agent, preferably soduim dioctyl sulphosuccinate, may be present during the homogeneous mixing of the colour coupler solution with the aqueous acid medium. The mixing apparatus described and claimed in Specification 1,193,350 may be used to mix homogeneously the colour coupler solution with the aqueous acid medium.
GB4926367A 1967-10-30 1967-10-30 Dispersing Colour Couplers Expired GB1193349A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4926367A GB1193349A (en) 1967-10-30 1967-10-30 Dispersing Colour Couplers
CH1590568A CH501249A (en) 1967-10-30 1968-10-24 Process for making a silver halide emulsion
DE19681805880 DE1805880A1 (en) 1967-10-30 1968-10-29 Process for the preparation of a halogen silver emulsion having a color coupler dispersed therein
FR1587050D FR1587050A (en) 1967-10-30 1968-10-29
BE723170D BE723170A (en) 1967-10-30 1968-10-30

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4926367A GB1193349A (en) 1967-10-30 1967-10-30 Dispersing Colour Couplers

Publications (1)

Publication Number Publication Date
GB1193349A true GB1193349A (en) 1970-05-28

Family

ID=10451740

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4926367A Expired GB1193349A (en) 1967-10-30 1967-10-30 Dispersing Colour Couplers

Country Status (5)

Country Link
BE (1) BE723170A (en)
CH (1) CH501249A (en)
DE (1) DE1805880A1 (en)
FR (1) FR1587050A (en)
GB (1) GB1193349A (en)

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933270A (en) * 1988-09-26 1990-06-12 Eastman Kodak Company Process for the precipitation of stable colloidal dispersions of base degradable components of photographic systems in the absence of polymeric steric stabilizers
US4990431A (en) * 1989-01-17 1991-02-05 Eastman Kodak Company Methods of forming stable dispersions of photographic materials
WO1991008516A1 (en) * 1989-11-22 1991-06-13 Eastman Kodak Company Increased activity precipitated photographic materials
US5089380A (en) * 1989-10-02 1992-02-18 Eastman Kodak Company Methods of preparation of precipitated coupler dispersions with increased photographic activity
US5091296A (en) * 1990-06-26 1992-02-25 Eastman Kodak Company Polymer co-precipitated coupler dispersion
US5158863A (en) * 1989-01-17 1992-10-27 Eastman Kodak Company Methods of forming stable dispersions of photographic materials
US5401623A (en) * 1992-10-05 1995-03-28 Eastman Kodak Company Reactivity control in microcrystalline coupler dispersions
US5573900A (en) * 1994-05-20 1996-11-12 Fuji Photo Film Co., Ltd. Dispersion method of hydrophobic, photographically useful compound
US5582957A (en) 1995-03-28 1996-12-10 Eastman Kodak Company Resuspension optimization for photographic nanosuspensions
US5605785A (en) * 1995-03-28 1997-02-25 Eastman Kodak Company Annealing processes for nanocrystallization of amorphous dispersions
US5624467A (en) * 1991-12-20 1997-04-29 Eastman Kodak Company Microprecipitation process for dispersing photographic filter dyes
US5770352A (en) * 1996-04-18 1998-06-23 Eastman Kodak Company High activity photographic dispersions with ultra low levels of permanent solvent
US5817450A (en) * 1995-02-24 1998-10-06 Fuji Photo Film Co., Ltd. Emulsification and dispersion method of hydrophobic, photographically useful compound
US5830632A (en) * 1996-10-31 1998-11-03 Eastman Kodak Company Photographic element containing dispersions of high dye-yield couplers having improved photographic activity
EP0915376A1 (en) * 1997-11-06 1999-05-12 Fuji Photo Film Co., Ltd. Emulsified dispersion of photographic hydrophobic compound and silver halide photographic light-sensitive material

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8429677D0 (en) * 1984-11-23 1985-01-03 Kodak Ltd Photographic coupler dispersions
US4957857A (en) * 1988-12-23 1990-09-18 Eastman Kodak Company Stabilization of precipitated dispersions of hydrophobic couplers

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4933270A (en) * 1988-09-26 1990-06-12 Eastman Kodak Company Process for the precipitation of stable colloidal dispersions of base degradable components of photographic systems in the absence of polymeric steric stabilizers
US4990431A (en) * 1989-01-17 1991-02-05 Eastman Kodak Company Methods of forming stable dispersions of photographic materials
US5158863A (en) * 1989-01-17 1992-10-27 Eastman Kodak Company Methods of forming stable dispersions of photographic materials
JP2923048B2 (en) 1989-01-17 1999-07-26 イーストマン コダック カンパニー Method of forming stable dispersion of photographic material
US5089380A (en) * 1989-10-02 1992-02-18 Eastman Kodak Company Methods of preparation of precipitated coupler dispersions with increased photographic activity
WO1991008516A1 (en) * 1989-11-22 1991-06-13 Eastman Kodak Company Increased activity precipitated photographic materials
US5091296A (en) * 1990-06-26 1992-02-25 Eastman Kodak Company Polymer co-precipitated coupler dispersion
US5279931A (en) * 1990-06-26 1994-01-18 Eastman Kodak Company Polymer co-precipitated coupler dispersion
US5624467A (en) * 1991-12-20 1997-04-29 Eastman Kodak Company Microprecipitation process for dispersing photographic filter dyes
US5434036A (en) * 1992-10-05 1995-07-18 Eastman Kodak Company Process for forming microcrystalline coupler dispersions
US5401623A (en) * 1992-10-05 1995-03-28 Eastman Kodak Company Reactivity control in microcrystalline coupler dispersions
US5573900A (en) * 1994-05-20 1996-11-12 Fuji Photo Film Co., Ltd. Dispersion method of hydrophobic, photographically useful compound
US5817450A (en) * 1995-02-24 1998-10-06 Fuji Photo Film Co., Ltd. Emulsification and dispersion method of hydrophobic, photographically useful compound
US5582957A (en) 1995-03-28 1996-12-10 Eastman Kodak Company Resuspension optimization for photographic nanosuspensions
US5605785A (en) * 1995-03-28 1997-02-25 Eastman Kodak Company Annealing processes for nanocrystallization of amorphous dispersions
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
EP0915376A1 (en) * 1997-11-06 1999-05-12 Fuji Photo Film Co., Ltd. Emulsified dispersion of photographic hydrophobic compound and silver halide photographic light-sensitive material
US6309812B1 (en) 1997-11-06 2001-10-30 Fuji Photo Film Co., Ltd. Emulsified dispersion of photographic hydrophobic compound and silver halide photographic light-sensitive material

Also Published As

Publication number Publication date
FR1587050A (en) 1970-03-06
BE723170A (en) 1969-04-01
DE1805880A1 (en) 1969-06-04
CH501249A (en) 1970-12-31

Similar Documents

Publication Publication Date Title
GB1193349A (en) Dispersing Colour Couplers
USRE28576E (en) Process for rapid dissolving water-soluble vinyl addition polymers using water-in-oil emulsions
ATE16814T1 (en) PROCESS FOR THE PRODUCTION OF FINELY DISTRIBUTED, POWDERFUL CAROTINOID RESPECTIVELY. RETINOID PREPARATIONS.
GB540525A (en) Improvements in and relating to sensitive photographic materials
GB1460894A (en) Method of incorporating photographic ingredients into hydrophilic colloids
GB844865A (en) Method for dispersing colour couplers used in colour photography
GB544006A (en) Improvements in sensitive photographic elements
GB1269074A (en) Manufacture of photographic silver halide colour materials
GB1413748A (en) Method of making a photographic silver halide emulsion
ES358333A1 (en) Solid dye preparations and their use
GB1250207A (en)
ES404748A1 (en) Process for preparing injectionable compositions
GB687751A (en) Process and material for the direct production of positive photographic images
GB912969A (en) Improvements in or relating to color photography
GB1107597A (en) Process for the manufacture of azo dyestuffs
US2484456A (en) Method for preparing photographic emulsions
GB1218190A (en) Method of incorporating ingredients in hydrophilic colloids
GB837972A (en) Improvements relating to photographic process
GB1023264A (en) Improvements in or relating to fire?extingnishing compositions
GB981251A (en) Process for preparing a silver halide-gelatin coagulum
GB517480A (en) Photographic layers and process of manufacture thereof
GB1145144A (en) Photographic products and processes
GB892956A (en) Novel photographic products and processes
GB626954A (en) Improvements in or relating to colloid materials
US2258755A (en) Process for the manufacture of dyed gelatin layers for photographic purposes

Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees