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GB525874A - Improvements in and relating to colour forming developers and processes of colour development - Google Patents

Improvements in and relating to colour forming developers and processes of colour development

Info

Publication number
GB525874A
GB525874A GB368840A GB368840A GB525874A GB 525874 A GB525874 A GB 525874A GB 368840 A GB368840 A GB 368840A GB 368840 A GB368840 A GB 368840A GB 525874 A GB525874 A GB 525874A
Authority
GB
United Kingdom
Prior art keywords
colour
phenyl
couplers
pentanedione
carbon atom
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
GB368840A
Other languages
English (en)
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.)
Kodak Ltd
Original Assignee
Kodak Ltd
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 Kodak Ltd filed Critical Kodak Ltd
Publication of GB525874A publication Critical patent/GB525874A/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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
    • G03C7/32—Colour coupling substances
    • G03C7/36—Couplers containing compounds with active methylene groups

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Cosmetics (AREA)
  • Detergent Compositions (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Color Printing (AREA)
GB368840A 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development Expired GB525874A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB656939A GB525765A (en) 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development

Publications (1)

Publication Number Publication Date
GB525874A true GB525874A (en) 1940-09-05

Family

ID=9816889

Family Applications (3)

Application Number Title Priority Date Filing Date
GB368840A Expired GB525874A (en) 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development
GB368940A Expired GB525875A (en) 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development
GB656939A Expired GB525765A (en) 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development

Family Applications After (2)

Application Number Title Priority Date Filing Date
GB368940A Expired GB525875A (en) 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development
GB656939A Expired GB525765A (en) 1939-02-28 1939-02-28 Improvements in and relating to colour forming developers and processes of colour development

Country Status (2)

Country Link
FR (1) FR867413A (fr)
GB (3) GB525874A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552355A (en) * 1947-08-06 1951-05-08 Gen Aniline & Film Corp Diazotype layers having organic esters and nitriles containing an active methylene group as azo components

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744265C (de) * 1941-06-30 1944-01-17 Ig Farbenindustrie Ag Verfahren zum Herstellen photographischer Farbenbilder durch Farbentwicklung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2552355A (en) * 1947-08-06 1951-05-08 Gen Aniline & Film Corp Diazotype layers having organic esters and nitriles containing an active methylene group as azo components

Also Published As

Publication number Publication date
FR867413A (fr) 1941-10-27
GB525875A (en) 1940-09-05
GB525765A (en) 1940-09-04

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