GB1139152A - Purifying colour-forming acylamido-containing coupling compounds - Google Patents

Purifying colour-forming acylamido-containing coupling compounds

Info

Publication number
GB1139152A
GB1139152A GB1083/67A GB108367A GB1139152A GB 1139152 A GB1139152 A GB 1139152A GB 1083/67 A GB1083/67 A GB 1083/67A GB 108367 A GB108367 A GB 108367A GB 1139152 A GB1139152 A GB 1139152A
Authority
GB
United Kingdom
Prior art keywords
coupler
colour
acylamido
derivative
purifying
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
GB1083/67A
Inventor
Courtenay David Anselm
Kenneth Roy Reitz
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
Publication of GB1139152A publication Critical patent/GB1139152A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
    • C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
    • C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
    • C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D231/44—Oxygen and nitrogen or sulfur and nitrogen atoms
    • C07D231/52—Oxygen atom in position 3 and nitrogen atom in position 5, or vice versa
    • 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

Abstract

1,139,152. Purifying acylamido-containing colour couplers. EASTMAN KODAK CO. 9 Jan., 1967 [21 Feb., 1966], No. 1083/67. Heading C2C. Colour couplers containing an acylamido group are recovered from a used photographic colour developing solution by a method comprising acidifying the used colour developing solution to precipitate the coupler and its unacylated derivative therefrom, separating the precipitated coupler and derivative from the solution, mixing the wet precipitate containing at least 25% by weight of water with sufficient appropriate acylating agent to reconstitute the unacylated derivative into the coupler and with the water present to cause the temperature to reach between 77‹ and 121‹ C. and with sufficient free organic acid corresponding to the acylating agent to form a slurry, recrystallizing the coupler from the mixture, washing the recrystallized coupler and drying the washed crystals. Preferred acylating agents are organic acid anhydrides and halides.
GB1083/67A 1966-02-21 1967-01-09 Purifying colour-forming acylamido-containing coupling compounds Expired GB1139152A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US52876766A 1966-02-21 1966-02-21

Publications (1)

Publication Number Publication Date
GB1139152A true GB1139152A (en) 1969-01-08

Family

ID=24107096

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1083/67A Expired GB1139152A (en) 1966-02-21 1967-01-09 Purifying colour-forming acylamido-containing coupling compounds

Country Status (5)

Country Link
US (1) US3458574A (en)
BE (1) BE693878A (en)
DE (1) DE1547776A1 (en)
FR (1) FR1511490A (en)
GB (1) GB1139152A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120361A (en) * 1978-08-18 1983-11-30 Pegler Hattersley Australia Pt Check valve

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1597596B2 (en) * 1966-12-28 1977-01-13 Fuji Shashin Film K.K., Ashigara, Kanagawa (Japan) COLOR DEVELOPER
JPS5427428A (en) * 1977-08-03 1979-03-01 Fuji Photo Film Co Ltd Recovery method of oil soluble couplers
US4474985A (en) * 1981-07-06 1984-10-02 Monsanto Company Purification of N-acetyl aminophenols

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2120361A (en) * 1978-08-18 1983-11-30 Pegler Hattersley Australia Pt Check valve

Also Published As

Publication number Publication date
US3458574A (en) 1969-07-29
BE693878A (en) 1967-07-17
DE1547776A1 (en) 1970-01-08
FR1511490A (en) 1968-01-26

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