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CH522901A - Use of pterines as color bleaching catalysts - Google Patents

Use of pterines as color bleaching catalysts

Info

Publication number
CH522901A
CH522901A CH152170A CH152170A CH522901A CH 522901 A CH522901 A CH 522901A CH 152170 A CH152170 A CH 152170A CH 152170 A CH152170 A CH 152170A CH 522901 A CH522901 A CH 522901A
Authority
CH
Switzerland
Prior art keywords
pterines
bleaching catalysts
color bleaching
color
catalysts
Prior art date
Application number
CH152170A
Other languages
German (de)
Inventor
Peter Dr Schlunke Hans
Original Assignee
Ciba Geigy 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 Ciba Geigy Ag filed Critical Ciba Geigy Ag
Priority to CH152170A priority Critical patent/CH522901A/en
Priority to DE19712105047 priority patent/DE2105047A1/en
Publication of CH522901A publication Critical patent/CH522901A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D475/00—Heterocyclic compounds containing pteridine ring systems
    • C07D475/02—Heterocyclic compounds containing pteridine ring systems with an oxygen atom directly attached in position 4
    • C07D475/04—Heterocyclic compounds containing pteridine ring systems with an oxygen atom directly attached in position 4 with a nitrogen atom directly attached in position 2
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Plural Heterocyclic Compounds (AREA)
CH152170A 1970-02-03 1970-02-03 Use of pterines as color bleaching catalysts CH522901A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CH152170A CH522901A (en) 1970-02-03 1970-02-03 Use of pterines as color bleaching catalysts
DE19712105047 DE2105047A1 (en) 1970-02-03 1971-02-03 Pterines dye bleach catalysts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH152170A CH522901A (en) 1970-02-03 1970-02-03 Use of pterines as color bleaching catalysts

Publications (1)

Publication Number Publication Date
CH522901A true CH522901A (en) 1972-05-15

Family

ID=4212383

Family Applications (1)

Application Number Title Priority Date Filing Date
CH152170A CH522901A (en) 1970-02-03 1970-02-03 Use of pterines as color bleaching catalysts

Country Status (2)

Country Link
CH (1) CH522901A (en)
DE (1) DE2105047A1 (en)

Also Published As

Publication number Publication date
DE2105047A1 (en) 1971-08-19

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Legal Events

Date Code Title Description
PL Patent ceased