GB493952A - 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
GB493952A
GB493952A GB1162137A GB1162137A GB493952A GB 493952 A GB493952 A GB 493952A GB 1162137 A GB1162137 A GB 1162137A GB 1162137 A GB1162137 A GB 1162137A GB 493952 A GB493952 A GB 493952A
Authority
GB
United Kingdom
Prior art keywords
acetoacetamino
colour
methyl
phenylene diamine
developers
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
GB1162137A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak 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 Eastman Kodak Co filed Critical Eastman Kodak Co
Priority to GB1162137A priority Critical patent/GB493952A/en
Publication of GB493952A publication Critical patent/GB493952A/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)

Abstract

493,952. Photographic colour developers. KODAK, Ltd. (Eastman Kodak Co.) April 23, 1937, No. 11621. Addition to 458,664. Drawings to Specification. [Class 98 (ii)] Developers for producing colour comprise an aromatic amino compound acting as a developing agent and a compound which combines with the oxidation product of the developer to form a coloured body, the compound being one of the following bodies: 1:4 - di - (acetoacetamino)benzene, acetoacetbenzylamide, 2 - acetoacetamino - 4- phenylthiazole, 2 - acetoacetamino - 4 - methyl- 5 - carbethoxy - thiazole, 2 - acetoacetamino - 4 - (1 - coumaronyl) - thiazole, 2- cyanacetamino - anthraquinone, o - chloracetoacetanilide, p - hydroxyacetoacetanilide. The developing agent may be an aminophenol, aminocresol, a halogen derivative of these, an aminonaphthol, a substituted or unsubstituted p-phenylene diamine, for example, diethyl - p - phenylene diamine, mono- or di - methyl - p - phenylene diamine or oamino-diethylaniline. Curves showing the absorption characteristics of the dyes formed when 2 - acetoacetamino - 4 - methyl - 5- carbethoxythiazole and 2 - acetoacetamino- 4-phenylthiazole are used, are given in the Specification. Specifications 427,472, 427,516, 427,520, 440,032, 440,089, 447,092, 475,784, and 475,786 are referred to.
GB1162137A 1937-04-23 1937-04-23 Improvements in and relating to colour forming developers and processes of colour development Expired GB493952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1162137A GB493952A (en) 1937-04-23 1937-04-23 Improvements in and relating to colour forming developers and processes of colour development

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1162137A GB493952A (en) 1937-04-23 1937-04-23 Improvements in and relating to colour forming developers and processes of colour development

Publications (1)

Publication Number Publication Date
GB493952A true GB493952A (en) 1938-10-18

Family

ID=9989626

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1162137A Expired GB493952A (en) 1937-04-23 1937-04-23 Improvements in and relating to colour forming developers and processes of colour development

Country Status (1)

Country Link
GB (1) GB493952A (en)

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