FR1447491A - Discoloration catalysts for the photographic silver discoloration process - Google Patents

Discoloration catalysts for the photographic silver discoloration process

Info

Publication number
FR1447491A
FR1447491A FR22811A FR22811A FR1447491A FR 1447491 A FR1447491 A FR 1447491A FR 22811 A FR22811 A FR 22811A FR 22811 A FR22811 A FR 22811A FR 1447491 A FR1447491 A FR 1447491A
Authority
FR
France
Prior art keywords
discoloration
catalysts
photographic silver
photographic
silver discoloration
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
FR22811A
Other languages
French (fr)
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.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba 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
Priority claimed from CH887864A external-priority patent/CH433980A/en
Application filed by Ciba Geigy AG, Ciba AG filed Critical Ciba Geigy AG
Priority to FR22811A priority Critical patent/FR1447491A/en
Application granted granted Critical
Publication of FR1447491A publication Critical patent/FR1447491A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D241/00—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings
    • C07D241/36—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems
    • C07D241/38—Heterocyclic compounds containing 1,4-diazine or hydrogenated 1,4-diazine rings condensed with carbocyclic rings or ring systems with only hydrogen or carbon atoms directly attached to the ring nitrogen atoms
    • C07D241/40—Benzopyrazines
    • C07D241/42—Benzopyrazines with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
    • 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
    • G03C7/28—Silver dye bleach processes; Materials therefor; Preparing or processing such materials
FR22811A 1964-07-07 1965-06-29 Discoloration catalysts for the photographic silver discoloration process Expired FR1447491A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR22811A FR1447491A (en) 1964-07-07 1965-06-29 Discoloration catalysts for the photographic silver discoloration process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH887864A CH433980A (en) 1964-07-07 1964-07-07 Use of acylamino compounds as color bleaching catalysts for the silver color bleaching process
FR22811A FR1447491A (en) 1964-07-07 1965-06-29 Discoloration catalysts for the photographic silver discoloration process

Publications (1)

Publication Number Publication Date
FR1447491A true FR1447491A (en) 1966-07-29

Family

ID=25703893

Family Applications (1)

Application Number Title Priority Date Filing Date
FR22811A Expired FR1447491A (en) 1964-07-07 1965-06-29 Discoloration catalysts for the photographic silver discoloration process

Country Status (1)

Country Link
FR (1) FR1447491A (en)

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