GB1044778A - Colour photography - Google Patents

Colour photography

Info

Publication number
GB1044778A
GB1044778A GB4487763A GB4487763A GB1044778A GB 1044778 A GB1044778 A GB 1044778A GB 4487763 A GB4487763 A GB 4487763A GB 4487763 A GB4487763 A GB 4487763A GB 1044778 A GB1044778 A GB 1044778A
Authority
GB
United Kingdom
Prior art keywords
formula
group
alkyl group
carbon atoms
alkoxy
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
GB4487763A
Inventor
Colin William Greenhalgh
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.)
Ilford Imaging UK Ltd
Original Assignee
Ilford 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 Ilford Ltd filed Critical Ilford Ltd
Priority to GB4487763A priority Critical patent/GB1044778A/en
Priority to NL6413276A priority patent/NL6413276A/xx
Priority to CH1469064A priority patent/CH451165A/en
Priority to BE655751A priority patent/BE655751A/xx
Priority to FR994771A priority patent/FR1417428A/en
Publication of GB1044778A publication Critical patent/GB1044778A/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
    • G03C7/333—Coloured coupling substances, e.g. for the correction of the coloured image
    • G03C7/3335—Coloured coupling substances, e.g. for the correction of the coloured image containing an azo chromophore

Abstract

The invention comprises colour couplers of the general formula <FORM:1044778/C4-C5/1> wherein R is a phenyl, mono-, di- or tri-chlorophenyl group; R1 is a halogen atom, R2 is an acyl group containing an alkyl group of at least 10 carbon atoms and at least one carboxylic acid group, R3 is an alkoxy or an -NHCO-alkyl group in which the alkyl group contains 1 to 4 carbon atoms and R4 is hydrogen or a C1-C4 alkoxy group. They may be prepared by acylating compounds of formula <FORM:1044778/C4-C5/2> to produce a compound of the formula <FORM:1044778/C4-C5/3> which is reacted with a diazonium salt of the formula <FORM:1044778/C4-C5/4> wherein R3 and R4 are as defined above. Many examples are given.
GB4487763A 1963-11-13 1963-11-13 Colour photography Expired GB1044778A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB4487763A GB1044778A (en) 1963-11-13 1963-11-13 Colour photography
NL6413276A NL6413276A (en) 1963-11-13 1964-11-13
CH1469064A CH451165A (en) 1963-11-13 1964-11-13 Method of making a color coupler
BE655751A BE655751A (en) 1963-11-13 1964-11-13
FR994771A FR1417428A (en) 1963-11-13 1964-11-13 Improvements in color photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4487763A GB1044778A (en) 1963-11-13 1963-11-13 Colour photography

Publications (1)

Publication Number Publication Date
GB1044778A true GB1044778A (en) 1966-10-05

Family

ID=10435082

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4487763A Expired GB1044778A (en) 1963-11-13 1963-11-13 Colour photography

Country Status (4)

Country Link
BE (1) BE655751A (en)
CH (1) CH451165A (en)
GB (1) GB1044778A (en)
NL (1) NL6413276A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415132A1 (en) * 1973-03-31 1974-10-10 Konishiroku Photo Ind COLOR PHOTOGRAPHIC PURPLE RED COUPLER AND COLOR PHOTOGRAPHIC SILVER HALOGENIDE RECORDING MATERIAL CONTAINING IT
US4729943A (en) * 1985-12-09 1988-03-08 Eastman Kodak Company Color image-forming photographic reversal element with improved interimage effects
US5364753A (en) * 1991-09-25 1994-11-15 Konica Corporation Silver halide color photographic light-sensitive material

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2415132A1 (en) * 1973-03-31 1974-10-10 Konishiroku Photo Ind COLOR PHOTOGRAPHIC PURPLE RED COUPLER AND COLOR PHOTOGRAPHIC SILVER HALOGENIDE RECORDING MATERIAL CONTAINING IT
US4729943A (en) * 1985-12-09 1988-03-08 Eastman Kodak Company Color image-forming photographic reversal element with improved interimage effects
US5364753A (en) * 1991-09-25 1994-11-15 Konica Corporation Silver halide color photographic light-sensitive material

Also Published As

Publication number Publication date
CH451165A (en) 1968-05-15
BE655751A (en) 1965-03-01
NL6413276A (en) 1965-05-14

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