US2343051A - Process for preparing photographic silver halide emulsions for multicolor photography - Google Patents
Process for preparing photographic silver halide emulsions for multicolor photography Download PDFInfo
- Publication number
- US2343051A US2343051A US345364A US34536440A US2343051A US 2343051 A US2343051 A US 2343051A US 345364 A US345364 A US 345364A US 34536440 A US34536440 A US 34536440A US 2343051 A US2343051 A US 2343051A
- Authority
- US
- United States
- Prior art keywords
- acid
- color
- silver halide
- halide emulsions
- fast
- 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 - Lifetime
Links
- 239000000839 emulsion Substances 0.000 title description 20
- -1 silver halide Chemical class 0.000 title description 7
- 238000004519 manufacturing process Methods 0.000 title description 5
- 229910052709 silver Inorganic materials 0.000 title description 4
- 239000004332 silver Substances 0.000 title description 4
- 239000002253 acid Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000009792 diffusion process Methods 0.000 description 6
- 125000001931 aliphatic group Chemical group 0.000 description 4
- 239000003513 alkali Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 description 3
- KJCVRFUGPWSIIH-UHFFFAOYSA-N 1-naphthol Chemical compound C1=CC=C2C(O)=CC=CC2=C1 KJCVRFUGPWSIIH-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Natural products CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- QVIKUAVXSRNDPS-UHFFFAOYSA-N 2-methoxynaphthalen-1-ol Chemical compound C1=CC=CC2=C(O)C(OC)=CC=C21 QVIKUAVXSRNDPS-UHFFFAOYSA-N 0.000 description 1
- 108010010803 Gelatin Proteins 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N benzene-dicarboxylic acid Natural products OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003518 caustics Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 229920000159 gelatin Polymers 0.000 description 1
- 239000008273 gelatin Substances 0.000 description 1
- 235000019322 gelatine Nutrition 0.000 description 1
- 235000011852 gelatine desserts Nutrition 0.000 description 1
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- SEOVTRFCIGRIMH-UHFFFAOYSA-N indole-3-acetic acid Chemical compound C1=CC=C2C(CC(=O)O)=CNC2=C1 SEOVTRFCIGRIMH-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000001424 substituent group Chemical group 0.000 description 1
- 125000000542 sulfonic acid group Chemical group 0.000 description 1
- TUNFSRHWOTWDNC-UHFFFAOYSA-N tetradecanoic acid Chemical compound CCCCCCCCCCCCCC(O)=O TUNFSRHWOTWDNC-UHFFFAOYSA-N 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
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
- G03C7/388—Processes for the incorporation in the emulsion of substances liberating photographically active agents or colour-coupling substances; Solvents therefor
Definitions
- the present invention relates to color photosraphy and more particularly to an improved method of preparing photographic silver-halide emulsions for multi-color photography.
- color formers fast to difiusion .re employed for the manufacture of photo- These color formers fast difiusion cannot be removed from the emul- :ion layer by the usual photographic treating maths, for instance by washing, though they have men added to the silver halide emulsion in dissolved form.
- color formers there were proposed for instance substances which are insoluble in aqueous alkalies, the hydrogen ion concentration of which corresponds approximately to that of the usual photographic developing solutions, which, however, are soluble at increased alkalinity, for instance in diluted caustic soda solution. These, color formers are incorporated into the emulsion dissolved in diluted caustic soda solution.
- color formers fast to diffusion which contain groups effecting better water solubility, such as acidor hydroxyl groups, they may be dissolved in diluted soda solution, whereby these soda-alkaline solutions possess a a pH-value which approximately corresponds to that of the photographic developing solution.
- This pH-value amounting to about 11 is, however, not very suitable for photographic emulsions, especially for sensitized emulsion layers, since the addition of the solution of the color former influences-the pH-value.
- This causes nearly always an increasein sensitivity which, however, is entirely undesired at this moment, as the process is hardto control.
- Such highly sensitive emulsions moreover, are inclined to fogging and possess low keeping quality.
- the present invention has for an object to provide color components which are soluble in the emulsion layer and which are fast to diffusion with respect to the difierent photographic treating processes afterwards.
- a further object is to provide silver halide emulsions containing the color forming components fast to diflusion.
- a further object is to provide an improved film for color photography having superposed silver halide emulsion layers, each layer containing a color component fast to difiusion.
- Such color formers fast to difiusion which possess molecule-radicals and acid groups incorporating fastness to difiusion or which have other substituents efiecting sodaor water-solubility are for instance the following: l-naphthol-Z-carboyl amino phenyl-3'-octadecylamino-4'-sulfo acid- 4 -sulfo acid, 1 naphthol-2-carboylaminophenyl-3-octadecylamino-4'-carboxylic acid 4- sulfo acid, 1-naphthol-2-carboylaminophenyl-3- oleylamin'o-4'-sulfo acid-4-sulio acid, l-naph- I thol- 2 -carboy1aminophenyl-3'-d0decylamin0-4'- thol-2-carboylamino-3' sulfoleylamino
- a color former having stronger alkalinity may be added to the emulsion during the manufacturing process or before casting and there may be added to the emulsion so much of a diluted acid or of an acid salt, as is necessary for the neutralization of the alkali which is not bound to the color former, Condition is, however, in all these cases, that the colorformers are soluble at a pH-value of less than 9.
- the emulsionsnaturally may contain all modifying agents suitable for the manufacture ofphotographic emulsions.
- the effect of the to be taken into considermodifying agents has pH-value of the emulsion, also ation.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0065128 | 1939-07-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2343051A true US2343051A (en) | 1944-02-29 |
Family
ID=7196271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US345364A Expired - Lifetime US2343051A (en) | 1939-07-13 | 1940-07-13 | Process for preparing photographic silver halide emulsions for multicolor photography |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US2343051A (enrdf_load_stackoverflow) |
| BE (1) | BE439601A (enrdf_load_stackoverflow) |
| FR (1) | FR873839A (enrdf_load_stackoverflow) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2543338A (en) * | 1948-03-18 | 1951-02-27 | Gen Aniline & Film Corp | Aromatic diamines as coupling components for the formation of photographic azine dyestuff images |
| US4970139A (en) * | 1989-10-02 | 1990-11-13 | Eastman Kodak Company | Methods of preparation of precipitated coupler dispersions with increased photographic activity |
| US5089380A (en) * | 1989-10-02 | 1992-02-18 | Eastman Kodak Company | Methods of preparation of precipitated coupler dispersions with increased photographic activity |
| US5104776A (en) * | 1989-11-29 | 1992-04-14 | Eastman Kodak Company | Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids |
| US5182189A (en) * | 1989-11-29 | 1993-01-26 | Eastman Kodak Company | Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids |
-
0
- BE BE439601D patent/BE439601A/xx unknown
-
1940
- 1940-07-13 US US345364A patent/US2343051A/en not_active Expired - Lifetime
-
1941
- 1941-07-15 FR FR873839D patent/FR873839A/fr not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2543338A (en) * | 1948-03-18 | 1951-02-27 | Gen Aniline & Film Corp | Aromatic diamines as coupling components for the formation of photographic azine dyestuff images |
| US4970139A (en) * | 1989-10-02 | 1990-11-13 | Eastman Kodak Company | Methods of preparation of precipitated coupler dispersions with increased photographic activity |
| US5089380A (en) * | 1989-10-02 | 1992-02-18 | Eastman Kodak Company | Methods of preparation of precipitated coupler dispersions with increased photographic activity |
| US5104776A (en) * | 1989-11-29 | 1992-04-14 | Eastman Kodak Company | Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids |
| US5182189A (en) * | 1989-11-29 | 1993-01-26 | Eastman Kodak Company | Increased photographic activity precipitated coupler dispersions prepared by coprecipitation with liquid carboxylic acids |
Also Published As
| Publication number | Publication date |
|---|---|
| FR873839A (fr) | 1942-07-21 |
| BE439601A (enrdf_load_stackoverflow) |
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