GB552009A - Improvements in or relating to processes of colour photography - Google Patents
Improvements in or relating to processes of colour photographyInfo
- Publication number
- GB552009A GB552009A GB273641A GB273641A GB552009A GB 552009 A GB552009 A GB 552009A GB 273641 A GB273641 A GB 273641A GB 273641 A GB273641 A GB 273641A GB 552009 A GB552009 A GB 552009A
- Authority
- GB
- United Kingdom
- Prior art keywords
- group
- acid
- pyridine
- aminophenol
- condensation
- 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
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
- G03C7/3212—Couplers characterised by a group not in coupling site, e.g. ballast group, as far as the coupling rest is not specific
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Pyridine Compounds (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
552,009. Dyes ; acid amides and chlorides. DU PONT DE NEMOURS & CO., E. I., HANFORD, W. E., KIRBY, J. E., and WOODWARD, D. W. Feb. 28,1941, No. 2736. [Class 2 (iii)] [Also in Group XX] A photographic element containing an image in a developable silver salt is developed to a coloured image with an aromatic amino colour-developing agent in the presence of a colour former which is a compound of the general formula Ar-NH-CO-R-CO-X, wherein Ar represents a monovalent organic radicle of the kind suitable for the production of an indoaniline, indophenol, indamine or azomethine dyestuff, R represents an aliphatic or cycloaliphatic radicle containing at least 4 carbon atoms, and X represents amino, hydroxyl, halogen or OR<SP>I</SP>, wherein R<SP>1</SP> represents the residue of an organic compound R<SP>1</SP>-OH esterifiable by acids. In examples (4), (6) and (12) a photographic film bearing a latent silver image is developed in a solution of p-aminodiethylaniline containing (4) N-mhydroxyphenyladipamic acid, (6) N-m- (3-methyl-5-ketopyrazyl) phenyladipamic acid, (12) N-p-acetoacetylaminophenyladipamic acid, washed and treated with Farmer's reducer to obtain a blue indophenol, a magenta and a yellow azomethine dye image respectively. Other specified developers are 1:4-diaminobenzene, p-aminodimethylaniline, p-aminodibutylaniline, p-methylaminoaniline, p-ethylaminoaniline, p-aminophenol, o-aminodimethylaniline, chloro-1:4-diaminobenzene, 1:2:5- toluylenediamine, 2 - amino - 5 - diethylamino - toluene and N - p - amino - phenylpiperidine. Amides of the above general formula are obtainable by condensation of a monochloride of the formula C1-CO-R-CO-OR<SP>1</SP> with an amine of the formula Ar-NH 2 and conversion, if necessary, of the ester group-CO-OR<SP>1</SP> to the free acid, amide or acid halide. Examples are given of the production of colour-formers by the condensation of the chloride of monomethyladipate with (1) o-aminophenol in ether containing sodium hydroxide; (2) m-aminophenol in ether containing sodium hydroxide; (3)-0- or m-aminophenol in pyridine ; (5) 1-(mamino) phenyl-3-methyl-5-pyrazolone in pyridine ; (7) and (8) p-nitroaniliine in ether containing sodium hydroxide, with subsequent reduction of the nitro group to amino ; (9) paminoazobenzene in pyridine, with subsequent reduction to replace the p-aminophenylazo group by the amino group ; (11) p-aminoacetoacetanilide hydrochloride in pyridine ; (13) 1:5-aminonaphthol in benzene containing pyridine, and by the condensation of (14) and (15) the chlorides of monomethylsebacate and monomethyltetradecanedioate respectively with m-aminophenol in pyridine. When the residue Ar-NH- in the product carries a nuclear primary amino group, other colour formers are obtainable by (a) condensation with a #- ketonic ester, e.g. ethylacetoacetate, (b) conversion of the primary amino group into a hydrazino group and condensation of the product with a #-ketonic ester to obtain a pyrazolone, (c) diazotization and hydrolysis to replace the primary amino group by a phenolic hydroxyl group, (d) alkylation of the primary amino group. In a further example (10), N-p-aminophenyladipamic acid is condensed with ethylacetoacetate. The chlorides of monomethyladipate, monomethylsebacate and tetradecanedioate are obtained by treating the monomethyl esters with thionyl chloride.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB273641A GB552009A (en) | 1941-02-28 | 1941-02-28 | Improvements in or relating to processes of colour photography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB273641A GB552009A (en) | 1941-02-28 | 1941-02-28 | Improvements in or relating to processes of colour photography |
Publications (1)
Publication Number | Publication Date |
---|---|
GB552009A true GB552009A (en) | 1943-03-22 |
Family
ID=9744911
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB273641A Expired GB552009A (en) | 1941-02-28 | 1941-02-28 | Improvements in or relating to processes of colour photography |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB552009A (en) |
-
1941
- 1941-02-28 GB GB273641A patent/GB552009A/en not_active Expired
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