GB959182A - A process of preventing darkening and the formation of precipitates in photographic developers - Google Patents

A process of preventing darkening and the formation of precipitates in photographic developers

Info

Publication number
GB959182A
GB959182A GB24439/63A GB2443963A GB959182A GB 959182 A GB959182 A GB 959182A GB 24439/63 A GB24439/63 A GB 24439/63A GB 2443963 A GB2443963 A GB 2443963A GB 959182 A GB959182 A GB 959182A
Authority
GB
United Kingdom
Prior art keywords
photographic developers
developers
radical
precipitates
formation
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
GB24439/63A
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.)
Agfa Gevaert NV
Original Assignee
Agfa AG
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 Agfa AG filed Critical Agfa AG
Publication of GB959182A publication Critical patent/GB959182A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D285/00—Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00
    • C07D285/01—Five-membered rings
    • C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
    • C07D285/04—Thiadiazoles; Hydrogenated thiadiazoles not condensed with other rings
    • C07D285/12—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles
    • C07D285/125—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles with oxygen, sulfur or nitrogen atoms, directly attached to ring carbon atoms, the nitrogen atoms not forming part of a nitro radical
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D285/00—Heterocyclic compounds containing rings having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for by groups C07D275/00 - C07D283/00
    • C07D285/01—Five-membered rings
    • C07D285/02—Thiadiazoles; Hydrogenated thiadiazoles
    • C07D285/04—Thiadiazoles; Hydrogenated thiadiazoles not condensed with other rings
    • C07D285/12—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles
    • C07D285/125—1,3,4-Thiadiazoles; Hydrogenated 1,3,4-thiadiazoles with oxygen, sulfur or nitrogen atoms, directly attached to ring carbon atoms, the nitrogen atoms not forming part of a nitro radical
    • C07D285/135—Nitrogen atoms
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/305—Additives other than developers
    • 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
    • G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
    • G03C8/24—Photosensitive materials characterised by the image-receiving section
    • G03C8/243—Toners for the silver image

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen- Or Sulfur-Containing Heterocyclic Ring Compounds With Rings Of Six Or More Members (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

959,182. Stabilisers for photographic developers. AGFA A.G. July 27, 1961 [July 27, 1960], No. 24439/63. Divided out of 940,169. Heading G2C. Photographic developers are stabilized by adding derivative of 2-mercahto-1, 3, 4-thiodiazole of formula: wherein X is sulphur or a-NH-radical and R is an alkylene radical of 4-10 carbon atoms, cycloalkylene, arylene or aralkylene radical or one of these radicals substituted by halogen. alkoxy or alkyl radicals. Compounds used in the examples are those wherein X is sulphur and R is hexylene, octylene or paraxylylene or X is -NH and R is hexylene. The compounds are preferably added to developers used in the silver salt diffusion process. The developer may contain a silver halide solvent e.g. sodium, potassium, calcium or ammonium thiosulphate. Specification 942,822 also is referred to.
GB24439/63A 1960-07-27 1961-07-27 A process of preventing darkening and the formation of precipitates in photographic developers Expired GB959182A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEA35212A DE1175077B (en) 1960-07-27 1960-07-27 Process for preventing dark staining and sludge formation in photographic developers

Publications (1)

Publication Number Publication Date
GB959182A true GB959182A (en) 1964-05-27

Family

ID=6928904

Family Applications (3)

Application Number Title Priority Date Filing Date
GB24440/63A Expired GB959661A (en) 1960-07-27 1961-07-27 A process of preventing darkening and the formation of precipitates in photographic developers
GB27326/61A Expired GB940169A (en) 1960-07-27 1961-07-27 A process for preventing darkening and precipitates in photographic developers
GB24439/63A Expired GB959182A (en) 1960-07-27 1961-07-27 A process of preventing darkening and the formation of precipitates in photographic developers

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB24440/63A Expired GB959661A (en) 1960-07-27 1961-07-27 A process of preventing darkening and the formation of precipitates in photographic developers
GB27326/61A Expired GB940169A (en) 1960-07-27 1961-07-27 A process for preventing darkening and precipitates in photographic developers

Country Status (5)

Country Link
US (1) US3212892A (en)
BE (1) BE606550A (en)
CH (1) CH399903A (en)
DE (1) DE1175077B (en)
GB (3) GB959661A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718468A (en) * 1969-04-15 1973-02-27 Agfa Gevaert Ag Stabilising developed photographic images
EP0693519A1 (en) 1994-07-13 1996-01-24 RHEIN-CHEMIE RHEINAU GmbH Poly 2,5-bis(polysulfano)-1,3,4-thiadiazole
EP0809147A1 (en) * 1996-05-20 1997-11-26 Eastman Kodak Company Photographic developing composition containing a sludge inhibiting agent and use thereof in the high contrast development of nucleated photographic elements

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1051869A (en) * 1963-04-27
DE1447569A1 (en) * 1963-04-27 1969-02-13 Agfa Ag Photographic light sensitive material
US3617289A (en) * 1966-12-10 1971-11-02 Fuji Photo Film Co Ltd Stabilization process for thermally developable light-sensitive elements
US4093462A (en) * 1976-11-11 1978-06-06 Eastman Kodak Company 2,5-Bis(secondary amino) oxa- and thiadiazole photographic developing agents
JPS5726848A (en) * 1980-07-24 1982-02-13 Fuji Photo Film Co Ltd Developing method for photosensitive silver halide material
JPS6128943A (en) * 1984-07-19 1986-02-08 Fuji Photo Film Co Ltd Developing method of color reversal photographic sensitive material
JPS61282841A (en) * 1985-06-07 1986-12-13 Fuji Photo Film Co Ltd Treatment of silver halide color photosensitive material
JP2591616B2 (en) 1986-04-22 1997-03-19 コニカ株式会社 Processing method of silver halide photographic light-sensitive material in which fog is prevented
US4933265A (en) * 1986-09-01 1990-06-12 Fuji Photo Film Co., Ltd. Process for forming direct positive color image
US4761482A (en) * 1987-04-23 1988-08-02 R. T. Vanderbilt Company, Inc. Terpene derivatives of 2,5-dimercapto-1,3,4-thiadiazoles and lubricating compositions containing same
US5210009A (en) * 1991-06-28 1993-05-11 Eastman Kodak Company Silver recovery element and process
US5310629A (en) * 1991-06-28 1994-05-10 Eastman Kodak Company Silver recovery element and method
US5188662A (en) * 1991-06-28 1993-02-23 Eastman Kodak Company Silver recovery process
JP3240334B2 (en) * 1992-10-12 2001-12-17 コニカ株式会社 Method for developing black-and-white silver halide photographic materials
US5506092A (en) * 1993-12-06 1996-04-09 Konica Corporation Method of processing black and white silver halide photographic compositions with a developer containing an anti sludgant
US5660972A (en) * 1994-03-16 1997-08-26 Mitsubishi Paper Mills Limited Method for photographic development using a filter to inhibit occurrence of silver sludges
US5840471A (en) 1996-10-02 1998-11-24 Konica Corporation Method for processing silver halide photographic light-sensitive material
US5830626A (en) * 1997-08-26 1998-11-03 Eastman Kodak Company Photographic developing composition containing anti-sludging agent and use thereof
US6620771B2 (en) * 1999-10-20 2003-09-16 R. T. Vanderbilt Company, Inc. Thiadiazole dimer additives and lubricating compositions containing the same
EP2102165A2 (en) * 2006-11-24 2009-09-23 AC Immune S.A. N-(methyl)-1h-pyrazol-3-amine, n-(methyl)-pyridin-2-amine and n-(methyl)-thiazol-2-amine derivatives for the treatment of diseases associated with amyloid or amyloid-like proteins, like e.g. alzheimer's
EP2121619A2 (en) * 2006-11-24 2009-11-25 AC Immune S.A. Compounds for the treatment of diseases associated with amyloid or amyloid-like proteins
EP2311823A1 (en) * 2009-10-15 2011-04-20 AC Immune S.A. 2,6-Diaminopyridine compounds for treating diseases associated with amyloid proteins or for treating ocular diseases
WO2021055388A1 (en) 2019-09-17 2021-03-25 The Lubrizol Corporation 2,5-dimercapto-1,3,4-thiadiazole ("dmtd") derivatives
WO2022046625A1 (en) 2020-08-26 2022-03-03 The Lubrizol Corporation 2,5-dimercapto-1,3,4-thiadiazole ("dmtd") metal salt derivatives
WO2022046718A1 (en) 2020-08-26 2022-03-03 The Lubrizol Corporation 2,5-dimercapto-1,3,4-thiadiazole (dmtd) zinc salt derivatives
CN114805244A (en) * 2022-05-19 2022-07-29 贵州大学 Bis- (1,3, 4-thiadiazole) derivative and preparation method and application thereof

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT160168B (en) * 1937-09-15 1941-02-25 Gevaert Photo Prod Nv Development process for photographic silver halide layers.
US2592195A (en) * 1939-12-20 1952-04-08 Gevaert Photo Prod Nv Heterocyclic nitrogen compounds
FR964821A (en) * 1946-04-05 1950-08-25
US2719126A (en) * 1952-12-30 1955-09-27 Standard Oil Co Corrosion inhibitors and compositions containing same
DE953607C (en) * 1953-08-20 1956-12-06 Basf Ag Process for the preparation of mono- or disubstitution products of 2, 5-dimercapto-1, 3, 4-thiadiazole
BE537818A (en) * 1954-05-03
DE950537C (en) * 1954-08-06 1956-10-11 Filmfabrik Agfa Wolfen Veb Process for keeping silver halide photographic emulsions clear during processing
BE557693A (en) * 1956-05-23
BE567153A (en) * 1957-04-26

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3718468A (en) * 1969-04-15 1973-02-27 Agfa Gevaert Ag Stabilising developed photographic images
EP0693519A1 (en) 1994-07-13 1996-01-24 RHEIN-CHEMIE RHEINAU GmbH Poly 2,5-bis(polysulfano)-1,3,4-thiadiazole
EP0809147A1 (en) * 1996-05-20 1997-11-26 Eastman Kodak Company Photographic developing composition containing a sludge inhibiting agent and use thereof in the high contrast development of nucleated photographic elements

Also Published As

Publication number Publication date
US3212892A (en) 1965-10-19
GB940169A (en) 1963-10-23
CH399903A (en) 1965-09-30
DE1175077B (en) 1964-07-30
BE606550A (en)
GB959661A (en) 1964-06-03

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