GB1266639A - - Google Patents

Info

Publication number
GB1266639A
GB1266639A GB1266639DA GB1266639A GB 1266639 A GB1266639 A GB 1266639A GB 1266639D A GB1266639D A GB 1266639DA GB 1266639 A GB1266639 A GB 1266639A
Authority
GB
United Kingdom
Prior art keywords
acid
oct
heating
phenazinesulphonic
nitroso
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
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 filed Critical
Publication of GB1266639A publication Critical patent/GB1266639A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/167—X-ray

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

1,266,639. Phenazine derivatives. FUJI PHOTO FILM CO. Ltd. 16 Oct., 1970 [17 Oct., 1969], No. 49323/70. Heading C2C. [Also in Division G2] 1-Phenazinecarboxylic acid is made by heating anthranilic acid with nitrobenzene in the presence of KOH. 5 - Benzo - [α] - phenazinesulphonic acid is made by heating 2-nitroso-1-naphthol-4-sulphonic acid with o-phenylene diamine in acid conditions.
GB1266639D 1969-10-17 1970-10-16 Expired GB1266639A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8303269 1969-10-17

Publications (1)

Publication Number Publication Date
GB1266639A true GB1266639A (en) 1972-03-15

Family

ID=13790873

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1266639D Expired GB1266639A (en) 1969-10-17 1970-10-16

Country Status (3)

Country Link
US (1) US3718469A (en)
DE (1) DE2050919A1 (en)
GB (1) GB1266639A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839046A (en) * 1972-10-12 1974-10-01 Ilford Ltd Process for the production of a photographic print

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2282005A (en) * 1940-03-02 1942-05-05 Eastman Kodak Co Phenazine and naphthazine fog inhibitor for photographic emulsions
GB561875A (en) * 1942-12-03 1944-06-08 John David Kendall Improvements in or relating to photographic materials
US3396023A (en) * 1965-08-24 1968-08-06 Eastman Kodak Co Piazine antifoggants for silver halide emulsions
US3403025A (en) * 1965-08-25 1968-09-24 Eastman Kodak Co Desensitization of silver halides to visible radiation with thiuram disulfides
CH484454A (en) * 1967-04-20 1970-01-15 Ciba Geigy Process for developing silver photographic images

Also Published As

Publication number Publication date
US3718469A (en) 1973-02-27
DE2050919A1 (en) 1971-05-06

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees