GB598477A - Improvements in or relating to colour photography - Google Patents
Improvements in or relating to colour photographyInfo
- Publication number
- GB598477A GB598477A GB7372/45A GB737245A GB598477A GB 598477 A GB598477 A GB 598477A GB 7372/45 A GB7372/45 A GB 7372/45A GB 737245 A GB737245 A GB 737245A GB 598477 A GB598477 A GB 598477A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acetal
- groups
- dye intermediate
- group
- reaction product
- 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
- G03C7/327—Macromolecular coupling substances
- G03C7/3275—Polymers obtained by reactions involving only carbon-to-carbon unsaturated bonds, e.g. vinyl polymers
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Spectroscopy & Molecular Physics (AREA)
- General Physics & Mathematics (AREA)
- Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
- Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
Abstract
Hydrophilic substantially colourless filmforming polymers and condensation products contain dye intermediate groups. They may contain a plurality of free hydroxyl groups and a plurality of dye intermediate groups, and the predominant hydrophilic groups may be nonphenolic hydroxyl groups. The dye intermediate groups may be attached either directly or indirectly to the chain, and may be connected by carbonamide, sulphonamide, amino, acetal, ester, or ether linkages to polymers such as hydrolysed polyvinyl esters (e.g. polyvinyl alcohols), hydrolysed interpolymers of vinyl esters (e.g. acetate, propionate, or butyrate), with olefines (e.g. ethylene, propylene, or butene-2), or other vinyl compounds (e.g. acrylic acid, acrylic acid alkyl esters, alkyl methacrylates, vinyl cyanide, vinyl chloride, or maleic anhydride), or the partial esters (e.g. acetate, propionate, or butyrate), ethers (e.g. methyl, ethyl, or hydroxyethyl), or acetals (e.g. formals, acetals, propionals, butyrals, or benzals) of such polymers. The change in solubility produced by the introduction of the dye intermediate groups may be balanced by the introduction of ester (e.g. acetate, propionate, benzoate, phthalate, or succinate), ether (e.g. from glycollic acid), or acetal (e.g. from phthalaldehydic acid, o-sulphobenzaldehyde, or acids of the type CHO. (CH2)X-COOH) before or after introduction of the dye intermediate groups, or by the use of dye intermediate groups containing such groups. A group or atom readily eliminated (e.g. a sulphonic or carboxylic acid group or a halogen atom) may be in the coupling reactive position. The dye intermediate group may contain a reactive acyclic or intracyclic methylene group or aromatic hydroxyl group and may be a phenol, naphthol, acylacetarylide, cyanoacetarylide, b -ketoester, pyrazolone, N-homophthalylamine, coumarone, indoxyl, or thioindoxyl. Light-sensitive silver salts may be precipitated therein, and allyl thiourea, allyl isothiocyanate, sodium thiosulphate, or cyanine dyes added. Polyvinyl alcholsalicylaldehyde condensation product; the acetal from polyvinyl alcohol, allylsalicylaldehyde, and phthalaldehydic acid; symmetrical bis-(m-1-phenyl-3-methyl-5-pyrazolone-1-yl)-urea-formaldehyde condensation product; the modified acetal of Example VI of Specification 535,341; the reaction product of 1-m-aminophenyl-3-methyl-5-pyrazolone and vinyl chloride-maleic anhydride interpolymer; the reaction product of 1 : 5-aminonaphthol and vinyl chloridemaleic anhydride interpolymer; the reaction product of oxynaphthoic acid and polyethylenemine; the reaction product of o-hydroxyphenylacetaldehyde and saponified polyglycerol; the reaction product of 1-p-carboxyphenyl-3-ethyl-5-pyrazolone and the m-aminobenzaldehyde acetal of polyvinyl alcohol; the reaction product of acetoacetaminophenylcarboxylic acid and the m-aminobenzaldehyde acetal of polyvinyl alcohol; the condensation product of m-cresol and p-cresol dialcohol; the condensation product of benzoylacet-p-hydroxyanilide and p-cresol dialcohol; and the salicylaldehyde acetal of hydrolysed ethylene vinyl acetate interpolymer are also referred to. A colourless or yellow-dyed interlayer may be of hardened polyvinyl alcohol or of a polyvinyl acetal from an aldehyde containing a sulphonic or carboxylic acid group. Specifications 479,838, [Group XX], 489,161, 521,169, 537,961, 578,666, 582,093 and 598,475 also are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US528942A US2397864A (en) | 1944-03-31 | 1944-03-31 | Color yielding photographic elements |
Publications (1)
Publication Number | Publication Date |
---|---|
GB598477A true GB598477A (en) | 1948-02-19 |
Family
ID=24107858
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7372/45A Expired GB598477A (en) | 1944-03-31 | 1945-03-23 | Improvements in or relating to colour photography |
Country Status (3)
Country | Link |
---|---|
US (1) | US2397864A (en) |
FR (1) | FR927414A (en) |
GB (1) | GB598477A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2476988A (en) * | 1946-07-08 | 1949-07-26 | Du Pont | 5-acyloxypyrazole amidoacetals |
US2551133A (en) * | 1946-08-29 | 1951-05-01 | Du Pont | Photographic light-sensitive diazo element |
US2513190A (en) * | 1948-02-18 | 1950-06-27 | Du Pont | Polymeric color formers |
US2562528A (en) * | 1949-01-21 | 1951-07-31 | Du Pont | Color former acetals of polyvinyl alcohol and substituted carbalkoxyacetamidobenzaldehydes |
US2754286A (en) * | 1951-10-15 | 1956-07-10 | Du Pont | Aldehydes and their acetals |
US2758029A (en) * | 1953-04-10 | 1956-08-07 | Du Pont | Process of making colored pictures |
US4335197A (en) * | 1980-11-25 | 1982-06-15 | E. I. Du Pont De Nemours And Company | Photoimaging process |
US4520093A (en) * | 1984-01-30 | 1985-05-28 | E. I. Du Pont De Nemours And Company | Photosensitive composition and method for forming a neutral black image |
US4576894A (en) * | 1984-09-24 | 1986-03-18 | E. I. Du Pont De Nemours And Company | Tanning development in low silver photoimaging using polymeric couplers |
-
1944
- 1944-03-31 US US528942A patent/US2397864A/en not_active Expired - Lifetime
-
1945
- 1945-03-23 GB GB7372/45A patent/GB598477A/en not_active Expired
-
1946
- 1946-05-27 FR FR927414D patent/FR927414A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2397864A (en) | 1946-04-02 |
FR927414A (en) | 1947-10-29 |
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