GB1466740A - Tetrazolium c-oxy-betaine compounds as antifog agents for silver halide photographic emulsions - Google Patents

Tetrazolium c-oxy-betaine compounds as antifog agents for silver halide photographic emulsions

Info

Publication number
GB1466740A
GB1466740A GB1989374A GB1989374A GB1466740A GB 1466740 A GB1466740 A GB 1466740A GB 1989374 A GB1989374 A GB 1989374A GB 1989374 A GB1989374 A GB 1989374A GB 1466740 A GB1466740 A GB 1466740A
Authority
GB
United Kingdom
Prior art keywords
tetrazolium
oxy
silver halide
halide photographic
betaine compounds
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
GB1989374A
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.)
3M Co
Original Assignee
Minnesota Mining and Manufacturing 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 Minnesota Mining and Manufacturing Co filed Critical Minnesota Mining and Manufacturing Co
Publication of GB1466740A publication Critical patent/GB1466740A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D257/00—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms
    • C07D257/02—Heterocyclic compounds containing rings having four nitrogen atoms as the only ring hetero atoms not condensed with other rings
    • C07D257/04—Five-membered rings
    • 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
    • G03C1/00—Photosensitive materials
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression

Abstract

1466740 Tetrazolium C-oxy-betaine compounds MINNESOTA MINING & MFG CO 6 May 1974 [7 May 1973] 19893/74 Heading C2C [Also in Division G2] Tetrazolium C-oxy-betaine compounds having the general formula or a mesomeric form thereof, wherein R is an optionally substituted aryl group are prepared by oxidizing the corresponding C-nitro formazane, using for example, amyl nitrite, N- bromosuccinimide, lead acetate or sodium hypochlorite as the oxidizing agent. The compounds of the invention may be used as foginhibiting agents for silver halide photographic emulsions.
GB1989374A 1973-05-07 1974-05-06 Tetrazolium c-oxy-betaine compounds as antifog agents for silver halide photographic emulsions Expired GB1466740A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT49830/73A IT984942B (en) 1973-05-07 1973-05-07 TETRAZOLIO BETAINE C OXES AS ANTI-FROST AGENTS FOR SILVER HALIDE PHOTO GRAPHIC EMULSIONS

Publications (1)

Publication Number Publication Date
GB1466740A true GB1466740A (en) 1977-03-09

Family

ID=11271660

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1989374A Expired GB1466740A (en) 1973-05-07 1974-05-06 Tetrazolium c-oxy-betaine compounds as antifog agents for silver halide photographic emulsions

Country Status (9)

Country Link
US (1) US3909268A (en)
JP (1) JPS5855496B2 (en)
AR (1) AR201583A1 (en)
BE (1) BE814663A (en)
CA (1) CA1030002A (en)
DE (1) DE2422069A1 (en)
FR (1) FR2229080B1 (en)
GB (1) GB1466740A (en)
IT (1) IT984942B (en)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5917825B2 (en) * 1975-08-02 1984-04-24 コニカ株式会社 How to form high contrast silver images
JPS5917818B2 (en) * 1976-07-31 1984-04-24 コニカ株式会社 Silver halide photographic material
US4175966A (en) * 1975-08-02 1979-11-27 Konishiroku Photo Industry Co., Ltd. Light-sensitive black-white silver halide photographic material for forming a high-contrast silver image and method of treating thereof
US4210715A (en) * 1975-08-02 1980-07-01 Konishiroku Photo Industry Co., Ltd. Light-sensitive silver halide photographic material and method of processing thereof
DE2657892C2 (en) * 1975-12-23 1985-08-14 Micro Technology Laboratory Co. Ltd., Tokio/Tokyo DC machine
US4265794A (en) 1976-01-07 1981-05-05 Ford Motor Company Moldable mixture of sacrificial binder and sinterable particulate solids
JPS6015936B2 (en) * 1976-07-31 1985-04-23 コニカ株式会社 Silver halide photographic material
JPS5917820B2 (en) * 1977-01-26 1984-04-24 コニカ株式会社 How to form high contrast silver images
JPS5917819B2 (en) * 1977-01-27 1984-04-24 コニカ株式会社 Silver halide photographic material
JPS5917821B2 (en) * 1977-01-28 1984-04-24 コニカ株式会社 High contrast silver halide photographic material
JPS5917826B2 (en) * 1977-01-31 1984-04-24 コニカ株式会社 Processing method for silver halide photographic materials
JPS5917822B2 (en) * 1977-02-01 1984-04-24 コニカ株式会社 Silver halide photographic material
JPS61296348A (en) * 1985-06-25 1986-12-27 Konishiroku Photo Ind Co Ltd Silver halide photographic sensitive material

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3023103A (en) * 1960-08-02 1962-02-27 Gen Aniline & Film Corp Antifoggants and stabilizers for photographic silver halide emulsions
US3420664A (en) * 1966-01-03 1969-01-07 Gaf Corp Dehydrodithizone and mercaptotetrazolium salts as silver halide photographic antifoggants and stabilizers

Also Published As

Publication number Publication date
AR201583A1 (en) 1975-03-31
IT984942B (en) 1974-11-20
JPS5855496B2 (en) 1983-12-09
FR2229080B1 (en) 1977-10-21
DE2422069A1 (en) 1974-12-05
US3909268A (en) 1975-09-30
JPS5032930A (en) 1975-03-29
BE814663A (en) 1974-11-07
FR2229080A1 (en) 1974-12-06
CA1030002A (en) 1978-04-25

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee