US2146040A - Development of silver halide emulsions in color - Google Patents
Development of silver halide emulsions in color Download PDFInfo
- Publication number
- US2146040A US2146040A US74816A US7481636A US2146040A US 2146040 A US2146040 A US 2146040A US 74816 A US74816 A US 74816A US 7481636 A US7481636 A US 7481636A US 2146040 A US2146040 A US 2146040A
- Authority
- US
- United States
- Prior art keywords
- silver halide
- color
- development
- halide emulsions
- methylaminophenol
- 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
- 229910052709 silver Inorganic materials 0.000 title description 11
- 239000004332 silver Substances 0.000 title description 11
- -1 silver halide Chemical class 0.000 title description 11
- 239000000839 emulsion Substances 0.000 title description 7
- 239000003513 alkali Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- PLIKAWJENQZMHA-UHFFFAOYSA-N 4-aminophenol Chemical compound NC1=CC=C(O)C=C1 PLIKAWJENQZMHA-UHFFFAOYSA-N 0.000 description 2
- ZWQFXBVGOKOTHW-UHFFFAOYSA-N 4-chloro-2-(methylamino)phenol Chemical compound CNC1=CC(Cl)=CC=C1O ZWQFXBVGOKOTHW-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- YCIMNLLNPGFGHC-UHFFFAOYSA-N catechol Chemical compound OC1=CC=CC=C1O YCIMNLLNPGFGHC-UHFFFAOYSA-N 0.000 description 2
- 239000003518 caustics Substances 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- WQGWDDDVZFFDIG-UHFFFAOYSA-N pyrogallol Chemical compound OC1=CC=CC(O)=C1O WQGWDDDVZFFDIG-UHFFFAOYSA-N 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- JHKKTXXMAQLGJB-UHFFFAOYSA-N 2-(methylamino)phenol Chemical compound CNC1=CC=CC=C1O JHKKTXXMAQLGJB-UHFFFAOYSA-N 0.000 description 1
- AQKZXSVMAROISC-UHFFFAOYSA-N 5-chloro-2-(methylamino)phenol Chemical compound CNC1=CC=C(Cl)C=C1O AQKZXSVMAROISC-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 125000004663 dialkyl amino group Chemical group 0.000 description 1
- 125000002147 dimethylamino group Chemical group [H]C([H])([H])N(*)C([H])([H])[H] 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 125000000956 methoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- HKOOXMFOFWEVGF-UHFFFAOYSA-N phenylhydrazine Chemical compound NNC1=CC=CC=C1 HKOOXMFOFWEVGF-UHFFFAOYSA-N 0.000 description 1
- 229940079877 pyrogallol Drugs 0.000 description 1
- 150000004060 quinone imines Chemical class 0.000 description 1
- JBJWASZNUJCEKT-UHFFFAOYSA-M sodium;hydroxide;hydrate Chemical compound O.[OH-].[Na+] JBJWASZNUJCEKT-UHFFFAOYSA-M 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 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
- G03C7/26—Silver halide emulsions for subtractive colour processes
-
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/30—Developers
- G03C5/3021—Developers with oxydisable hydroxyl or amine groups linked to an aromatic ring
Definitions
- Our present invention relates to development of silver halide emulsions in color.
- One of its objects is to provide a process of developing silver halide emulsions in color.
- silver halide layers can be developed in colors.
- para-aminophenol or dialkyll0 amino-aniline in admixture with phenol, aniline or such substances as contain a methylene-group capable of reaction.
- the picture obtained contains silver and the dyestuff, the latter being a quinone-imine dyestufi or an azomethine, accordla ing to the nature of the selected components.
- Another process consists in using certain polyhydric phenols, such as pyrocatechol or pyrogallol, in an alkaline solution without a sulphite. Both processes suffer from the disadvantage that the solutions have little stability; moreover, the last-named developers give tints which are not very pleasing.
- the present invention depends on the observation that very beautiful pictures in colors are obtained when an ortho-methyl-aminophenol or a. substitution product thereof acts on the silver halide layer in a solution alkaline with alkali carbonate or caustic alkali. After separating the silver, for example with farmers reducer.
- the substituents may be alkyl, such as methyl or ethyl, halogen, alkoxy, such as methoxy or ethoxy, or an aminogroup, or a. dialkyl amino-group, such as a dimethylamino-group or a diethylamlnogroup.
- the compounds containing halogen as a substituent have proved to give the best effect.
- Suitable ortho-methylaminophenols are, for instance, ortho-methylaminophenol giving a yellow color, 4-chlor-ortho-methylaminophenol giving a brown color, 5-chlor-ortho-methylaminophenol and 4,5-dimethyl-ortho-methylaminophenol giving a yellow color, 4-chlor-6-aminoortho-methylaminophenol giving a brown color,
- a process of developing an exposed silver halide emulsion in color which comprises depositing a dyestuif on the exposed silver halide by treating the exposed silver halide emulsion with a developing solution consisting of an orthomethylaminophenol, water and an alkali selected from the class consisting of alkali carbonates and caustic alkalies.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Patented Feb. 7, 1939 DEVELOPMENT OF SILVER HALIDE EMULSIONS IN CQLOR Gustav Wilmanns, Wolfen kreis Bitterfeld, and
Wilhelm Schneider, Dessau, Germany, assignors to Agfa Ansco Corporation, Binghamton, N. Y., a corporation of New York No Drawing. Application April 16, 1936, Serial No. 74,816. In Germany April 1'7, 1935 3 Claims.
Our present invention relates to development of silver halide emulsions in color.
One of its objects is to provide a process of developing silver halide emulsions in color.
5 Further objects will be seen from the detailed specification following hereafter.
It is known that silver halide layers can be developed in colors. For this purpose there have been used para-aminophenol or dialkyll0 amino-aniline in admixture with phenol, aniline or such substances as contain a methylene-group capable of reaction. The picture obtained contains silver and the dyestuff, the latter being a quinone-imine dyestufi or an azomethine, accordla ing to the nature of the selected components.
Another process consists in using certain polyhydric phenols, such as pyrocatechol or pyrogallol, in an alkaline solution without a sulphite. Both processes suffer from the disadvantage that the solutions have little stability; moreover, the last-named developers give tints which are not very pleasing.
The present invention depends on the observation that very beautiful pictures in colors are obtained when an ortho-methyl-aminophenol or a. substitution product thereof acts on the silver halide layer in a solution alkaline with alkali carbonate or caustic alkali. After separating the silver, for example with Farmers reducer.
o thepure dyestufl picture remains. The developing solutions are remarkably stable. The substituents may be alkyl, such as methyl or ethyl, halogen, alkoxy, such as methoxy or ethoxy, or an aminogroup, or a. dialkyl amino-group, such as a dimethylamino-group or a diethylamlnogroup. The compounds containing halogen as a substituent have proved to give the best effect.
Suitable ortho-methylaminophenols are, for instance, ortho-methylaminophenol giving a yellow color, 4-chlor-ortho-methylaminophenol giving a brown color, 5-chlor-ortho-methylaminophenol and 4,5-dimethyl-ortho-methylaminophenol giving a yellow color, 4-chlor-6-aminoortho-methylaminophenol giving a brown color,
and 4-6-dimethyl-ortho-methylaminophenol giving a yellow color.
The following examples illustrate the "wention:-
Example 1.--A yellow developer is afforded by the following solution:
4 5-dimethyl-2-methyl-aminophenol-gram- 1 Sodium hydroxide--- Water cc 200 Example 2.-A yellow-red picture is obtained by means of the following developer:
2-methylaminophenol gram 1 Potassium carbonate grams 10 Water cc 200 Example 3,--A red picture is obtained by means 15 of the following developer:
4-chloro-2-methylaminophenol grams 2 Potassium carbonate do 15 Water 00.. 200
What we claim is:
1. A process of developing an exposed silver halide emulsion in color, which comprises depositing a dyestuif on the exposed silver halide by treating the exposed silver halide emulsion with a developing solution consisting of an orthomethylaminophenol, water and an alkali selected from the class consisting of alkali carbonates and caustic alkalies.
the emulsion.
3. The process as defined in claim 2, wherein the orthomethylaminophenol is 4.5'-dimethyl-2- methylaminophenol.
GUSTAV WILMANNS. WILHELM SCHNEIDER.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0052145 | 1935-04-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2146040A true US2146040A (en) | 1939-02-07 |
Family
ID=7193266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US74816A Expired - Lifetime US2146040A (en) | 1935-04-17 | 1936-04-16 | Development of silver halide emulsions in color |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2146040A (en) |
| BE (1) | BE414966A (en) |
| ES (1) | ES142001A1 (en) |
| FR (1) | FR804649A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2506622A (en) * | 1944-03-11 | 1950-05-09 | Technicolor Motion Picture | Elimination of preservative sulfite from photographic developers prior to use in color development |
| US3077402A (en) * | 1954-12-06 | 1963-02-12 | Polaroid Corp | Photographic color processes, products, and compositions |
| US4342818A (en) * | 1979-12-25 | 1982-08-03 | Fuji Photo Film Co., Ltd. | Process for forming color filter |
-
0
- BE BE414966D patent/BE414966A/xx unknown
-
1936
- 1936-04-07 FR FR804649D patent/FR804649A/en not_active Expired
- 1936-04-16 US US74816A patent/US2146040A/en not_active Expired - Lifetime
- 1936-04-16 ES ES0142001A patent/ES142001A1/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2506622A (en) * | 1944-03-11 | 1950-05-09 | Technicolor Motion Picture | Elimination of preservative sulfite from photographic developers prior to use in color development |
| US3077402A (en) * | 1954-12-06 | 1963-02-12 | Polaroid Corp | Photographic color processes, products, and compositions |
| US4342818A (en) * | 1979-12-25 | 1982-08-03 | Fuji Photo Film Co., Ltd. | Process for forming color filter |
Also Published As
| Publication number | Publication date |
|---|---|
| BE414966A (en) | |
| ES142001A1 (en) | 1936-08-01 |
| FR804649A (en) | 1936-10-28 |
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