GB714012A - Photographic colour correction processes - Google Patents

Photographic colour correction processes

Info

Publication number
GB714012A
GB714012A GB18680/52A GB1868052A GB714012A GB 714012 A GB714012 A GB 714012A GB 18680/52 A GB18680/52 A GB 18680/52A GB 1868052 A GB1868052 A GB 1868052A GB 714012 A GB714012 A GB 714012A
Authority
GB
United Kingdom
Prior art keywords
benzaldehyde
ethylene glycol
group
prepared
carbo
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
GB18680/52A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and 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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB714012A publication Critical patent/GB714012A/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
    • G03C7/18—Processes for the correction of the colour image in subtractive colour photography

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The polyvinyl acetal of 3-(carbo-p-cresoxyamino)-benzaldehyde, containing methylidenephenyl-o-sulphonate groups for increased solubility, is prepared by adding phosphoric acid to a solution of polyvinyl alcohol and sodium benzaldehyde-o-sulphonate in ethylene glycol and stirring, adding a dioxane solution of 3-(carbo-p-cresoxyamino)-benzaldehyde ethylene glycol acetal thereto and stirring, adding a methanol solution of triethylamine to neutralize the phosphoric acid, and precipitating with acetone. The polyvinyl acetal of 3-aminobenzaldehyde containing sodium methylidene phenyl-o-sulphonate is prepared either by hydrolyzing an aqueous ethanol solution of the above polyvinyl acetal with aqueous sodium hydroxide solution, or by stirring a mixture of polyvinyl alcohol, sodium benzaldehyde-o-sulphonate, ethylene glycol, phosphoric acid, and phosphoric anhydride, adding an ethylene glycol solution of m-aminobenzaldehyde ethylene glycol acetal and continuing stirring, and isolating as before. The polyvinyl acetals of 3-(carbo-p-cresoxyamino)-4-methoxybenzaldehyde, of 3-amino-4-methoxybenzaldehyde, of m-(5-carbethoxyamino-2-chlorobenzamido)-benzaldehyde, of m-(5-carbo-methoxyamino - 2 - chlorobenzamido) - benzaldehyde, of m-(5-carbo-p-cresoxyamino-2-chlorobenzamido)-benzaldehyde, and of m-(5-amino-2-chlorobenzamido)-benzaldehyde, all containing methylidenephenyl-o-sulphonate groups, are similarly prepared. Specifications 458,400, [Group XX], 469,108, 598,477, 600,023, 602,881, [Group XX], 627,125, 631,269, [Group IV (b)], 635,294, 638,895, 641,368, [Group XX], 652,928, and 662,793 are referred to.ALSO:3 - Nitro - 5 - stearamidobenzoic acid is prepared by heating together 3-nitro-5-aminobenzoic acid, stearoyl chloride, and pyridine. 3 - Amino - 5 - stearamidobenzoic acid is prepared by reducing 3-nitro-5-stearamidobenzoic acid in ethanol with hydrogen under pressure in the presence of palladium - on - charcoal catalyst. 3 - (Carbo - p - cresoxyamino) - benzaldehyde ethylene glycol acetal is prepared by adding p-cresyl chloroformate to a mixture of an acetone solution of m-aminobenzaldehyde ethylene glycol acetal and aqueous sodium carbonate. 3 - (Carbo - p - cresoxyamino) - 4 - methoxy - benzaldehyde ethylene glycol acetal is similarly prepared. M - (5 - Carbethoxyamino - 2 - chlorobenzamido)-benzaldehyde ethylene glycol acetal is prepared by adding a dioxane solution of 5-carbethoxyamino-2-chlorobenzoyl chloride to a mixture of a dioxane solution of m-aminobenzaldehyde ethylene glycol acetal and aqueous sodium carbonate. M-(5-Carbomethoxyamino - 2 - chlorobenzamido) - and m - (5-carbo - p - cresoxyamino - 2 - chlorobenzamido)-ethylene glycol acetals are similarly prepared. 5 - Carbethoxyamino - 2 - chlorobenzoyl chloride is obtained by reacting 5-carbethoxyamino-2-chlorobenzoic acid with thionyl chloride. 5 - Carbethoxyamino - 2 - chlorobenzoic acid is prepared by adding ethyl chloroformate to an aqueous solution of 2-chloro-5-aminobenzoic acid containing sodium carbonate. Specifications 458,400, [Group XX], 469,108, 598,477, 600,023, [Group IV (a)], 602,881, [Group XX], 627,125, 631,269, 635,294, 638,895, 641,368, [Group XX], 652,928, and 662,793, [Group IV (a)], are referred to.
GB18680/52A 1951-07-24 1952-07-23 Photographic colour correction processes Expired GB714012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US238384A US2697662A (en) 1951-07-24 1951-07-24 Color correction processes

Publications (1)

Publication Number Publication Date
GB714012A true GB714012A (en) 1954-08-18

Family

ID=22897646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18680/52A Expired GB714012A (en) 1951-07-24 1952-07-23 Photographic colour correction processes

Country Status (2)

Country Link
US (1) US2697662A (en)
GB (1) GB714012A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE567154A (en) * 1957-04-26
DE1142757B (en) * 1961-03-14 1963-01-24 Agfa Ag Process for improving color reproduction when reproducing multicolor images with the aid of two color masks
US4680356A (en) * 1985-01-02 1987-07-14 Eastman Kodak Company Colorless ligand-releasing monomers and polymers and their use to provide dyes with metal ions
US4557998A (en) * 1985-01-02 1985-12-10 Eastman Kodak Company Colorless ligand-releasing monomers and polymers and their use to provide dyes with metal ions
EP2423188B1 (en) * 2003-08-29 2021-03-10 Mitsui Chemicals Agro, Inc. Intermediates in the preparation of agricultural/horticultural insecticides and method for using the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2306410A (en) * 1936-07-07 1942-12-29 Eastman Kodak Co Color development
GB503824A (en) * 1936-07-07 1939-04-11 Kodak Ltd Process of colour photography
US2328034A (en) * 1940-12-14 1943-08-31 Du Pont Photographic element and process
BE476358A (en) * 1944-05-03

Also Published As

Publication number Publication date
US2697662A (en) 1954-12-21

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