US2324831A - Photographic emulsion - Google Patents
Photographic emulsion Download PDFInfo
- Publication number
- US2324831A US2324831A US2324831DA US2324831A US 2324831 A US2324831 A US 2324831A US 2324831D A US2324831D A US 2324831DA US 2324831 A US2324831 A US 2324831A
- Authority
- US
- United States
- Prior art keywords
- emulsion
- formers
- water
- photographic emulsion
- solution
- 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 14
- 108010010803 Gelatin Proteins 0.000 description 7
- 229920000159 gelatin Polymers 0.000 description 7
- 239000008273 gelatin Substances 0.000 description 7
- 235000019322 gelatine Nutrition 0.000 description 7
- 235000011852 gelatine desserts Nutrition 0.000 description 7
- 229910052709 silver Inorganic materials 0.000 description 5
- 239000004332 silver Substances 0.000 description 5
- -1 silver halide Chemical class 0.000 description 5
- 239000000975 dye Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000003613 bile acid Substances 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 125000001931 aliphatic group Chemical group 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000002270 dispersing agent Substances 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- HSINOMROUCMIEA-FGVHQWLLSA-N (2s,4r)-4-[(3r,5s,6r,7r,8s,9s,10s,13r,14s,17r)-6-ethyl-3,7-dihydroxy-10,13-dimethyl-2,3,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthren-17-yl]-2-methylpentanoic acid Chemical compound C([C@@]12C)C[C@@H](O)C[C@H]1[C@@H](CC)[C@@H](O)[C@@H]1[C@@H]2CC[C@]2(C)[C@@H]([C@H](C)C[C@H](C)C(O)=O)CC[C@H]21 HSINOMROUCMIEA-FGVHQWLLSA-N 0.000 description 1
- BHQCQFFYRZLCQQ-UHFFFAOYSA-N (3alpha,5alpha,7alpha,12alpha)-3,7,12-trihydroxy-cholan-24-oic acid Natural products OC1CC2CC(O)CCC2(C)C2C1C1CCC(C(CCC(O)=O)C)C1(C)C(O)C2 BHQCQFFYRZLCQQ-UHFFFAOYSA-N 0.000 description 1
- 239000004380 Cholic acid Substances 0.000 description 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 239000003833 bile salt Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- BHQCQFFYRZLCQQ-OELDTZBJSA-N cholic acid Chemical compound C([C@H]1C[C@H]2O)[C@H](O)CC[C@]1(C)[C@@H]1[C@@H]2[C@@H]2CC[C@H]([C@@H](CCC(O)=O)C)[C@@]2(C)[C@@H](O)C1 BHQCQFFYRZLCQQ-OELDTZBJSA-N 0.000 description 1
- 235000019416 cholic acid Nutrition 0.000 description 1
- 229960002471 cholic acid Drugs 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- KXGVEGMKQFWNSR-UHFFFAOYSA-N deoxycholic acid Natural products C1CC2CC(O)CCC2(C)C2C1C1CCC(C(CCC(O)=O)C)C1(C)C(O)C2 KXGVEGMKQFWNSR-UHFFFAOYSA-N 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
- 239000000080 wetting agent Substances 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
- This fastness usion of the dyestuff formers may, for ine, be effected by their special chemical conon or by the introduction into the molecule in radicles.
- sparingly soluble dyestuff formers have the vantage that it is diflicult to keep them in dissolved condition when added to the phophic emulsion and when drying them to-.- e with the gelatin'to give a clear translayer. It has, therefore, already been (1 to disperse these water-insoluble or ly water-soluble dyestuff formers with wetting or dispersing agents such as sulhigh molecular weight hydroxy fatty acids lcohols, high molecular weight aliphatic es or resin soaps.
- the photographic owever is very sensitive to foreign sub- Moreover traces of crystals and flakes e gelatin layer even if so small that they ltllflusion by substituting the same with 'such' UNITED STATES PATENT oFncE PHOTOGRAPHIC EMULSION Alfred Friihlich and Wilhelm Schneider, Germany, assignore to General Aniline Corporation, New York, N.v Y., a corporation of Dessan, aFilm 13 Claims. (01. 95-6) present invention relates to a photographicv on and more particularly to a silver halide can be scarcely distinguished with the naked eye cause much trouble in projection. It is, therefore, desirable to dissolve the water-insoluble dyestuil formers directly in the photographic emulsion.
- Our present invention is based on the observation that water-insoluble or sparingly water-soluble dyestuif components can be dissolved in agents preferably is a physical one for they to diffusion with respect to the binding agent (gelatin) of the emulsion by dissolving the components in water inthe presence of bile acids or salts thereof, if necessary with an addition of organic solvents. It is sometimes helpful to warm the substances while dissolving them.
- the solution obtained can be added to a photographic emulsion or a gelatin solution without effecting a precipitation or aturbidity of these aqueous liquids. On drying the gelatin solution a layer clear as glass is obtained.
- 'Ilhe dyestui! formers are conveniently dissolved together with the bile acid or a'watersoluble salt thereof, if desired, with an addition 1 of the dyestufi former is added.
- the solution of the dyestuil' former may also be mixed with a gelatin solution whereupon, if necessary, after washing with water, the resulting solution is worked up into a silver halide emulsion.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0067366 | 1940-07-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2324831A true US2324831A (en) | 1943-07-20 |
Family
ID=7196708
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US2324831D Expired - Lifetime US2324831A (en) | 1940-07-09 | Photographic emulsion |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2324831A (enrdf_load_stackoverflow) |
| BE (1) | BE441871A (enrdf_load_stackoverflow) |
| CH (1) | CH222565A (enrdf_load_stackoverflow) |
| FR (1) | FR873707A (enrdf_load_stackoverflow) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2527261A (en) * | 1944-10-30 | 1950-10-24 | Ilflord Ltd | Production of photographic silver halide emulsions from gelatinanion soap complexes |
| US2577127A (en) * | 1946-11-23 | 1951-12-04 | Du Pont | Photographic element with colloid layer containing color former and nonionic wettingagent |
-
0
- BE BE441871D patent/BE441871A/xx unknown
- US US2324831D patent/US2324831A/en not_active Expired - Lifetime
-
1941
- 1941-06-26 CH CH222565D patent/CH222565A/de unknown
- 1941-07-08 FR FR873707D patent/FR873707A/fr not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2527261A (en) * | 1944-10-30 | 1950-10-24 | Ilflord Ltd | Production of photographic silver halide emulsions from gelatinanion soap complexes |
| US2577127A (en) * | 1946-11-23 | 1951-12-04 | Du Pont | Photographic element with colloid layer containing color former and nonionic wettingagent |
Also Published As
| Publication number | Publication date |
|---|---|
| BE441871A (enrdf_load_stackoverflow) | |
| FR873707A (fr) | 1942-07-17 |
| CH222565A (de) | 1942-07-31 |
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