GB914256A - Sensitized photographic silver halide emulsions - Google Patents
Sensitized photographic silver halide emulsionsInfo
- Publication number
- GB914256A GB914256A GB20535/59A GB2053559A GB914256A GB 914256 A GB914256 A GB 914256A GB 20535/59 A GB20535/59 A GB 20535/59A GB 2053559 A GB2053559 A GB 2053559A GB 914256 A GB914256 A GB 914256A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dichloro
- ethyl
- methyl
- prepared
- benzimidazole
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/10—Organic substances
- G03C1/12—Methine and polymethine dyes
- G03C1/14—Methine and polymethine dyes with an odd number of CH groups
- G03C1/18—Methine and polymethine dyes with an odd number of CH groups with three CH groups
-
- 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
- G03C1/00—Photosensitive materials
- G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/08—Sensitivity-increasing substances
- G03C1/28—Sensitivity-increasing substances together with supersensitising substances
Landscapes
- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Developing Agents For Electrophotography (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
Anhydro - 4;5 - dichloro-3-ethyl-2-methyl-1-(4-sulphobutyl)-benzimidazolium hydroxide is prepared by heating together 6;7-dichloro-1-ethyl-2-methylbenzimidazole and 1,4-butane sultone. 5;6-Dichloro-N-ethyl-2-nitro-aniline is prepared by adding 2,3,4-trichloro-nitrobenzene in small portions to a solution of ethylamine in water. The product is reduced with iron powder and conc. hydrochloric acid to the corresponding amine. Addition of acetic anhydride to this amine, with shaking, yields 6,7-dichloro-1-ethyl-2-methyl-benzimidazole. This base is then quaternized by heating with b -iodo-propionic acid. 5,6-Dichloro-1-ethyl-2-methyl-benzimidazole is similarly quaternized with 4-bromovaleric acid. Specifications 466,269, 524,154, 524,554, 524,555, 532,735, 541,589, 561,172, 581,772, 754,546 and 871,936 are referred to.ALSO: 1;11- Di(b -carboxyethyl)- 4;41;5; 51-tetrachloro-3;31- diethylbenzimidazolocarbocyanine iodide is prepared by refluxing the quaternary salt from 6;7-dichloro-1-ethyl-2-methyl-benzimidazole and b -iodopropionic acid with chloral in the presence of sodium ethoxide. 1;11- Di(4-carboxybutyl)- 5;51;6;61 tetrachloro-3;31- diethylbenzimidazolocarbocyanine iodide is prepared by refluxing the quaternary salt from 5;6-dichloro-1-ethyl-2-methyl-benzimidazole and 4-bromovaleric acid with chloral in the presence of sodium ethoxide, and suspending the product in aqueous sodium iodide. Anhydro- 4;41;5;51-tetrachlor- 3;31-diethyl-1; 11- di(4-sulphobutyl) benzimidazolocarbocyanine hydroxide is prepared by refluxing anhydro-4;5- dichloro-3-ethyl- 2-methyl-1-(4-sulphobutyl) -benzimidazolium hydroxide with chloral in the presence of sodium ethoxide. Specifications 466,269, 524,154, 524,554, 524,555, 532,735, 541,589, 561,172, 581,772, 754,546 and 871,936 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US743069A US2945763A (en) | 1958-06-19 | 1958-06-19 | Green sensitization of photographic silver halide emulsions |
Publications (1)
Publication Number | Publication Date |
---|---|
GB914256A true GB914256A (en) | 1963-01-02 |
Family
ID=24987402
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB20535/59A Expired GB914256A (en) | 1958-06-19 | 1959-06-16 | Sensitized photographic silver halide emulsions |
Country Status (4)
Country | Link |
---|---|
US (1) | US2945763A (en) |
BE (1) | BE579594A (en) |
FR (1) | FR1228644A (en) |
GB (1) | GB914256A (en) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1146465A (en) * | 1965-05-21 | 1969-03-26 | Ferrania Spa | Photographic sensitising dyes |
US3506443A (en) * | 1965-11-18 | 1970-04-14 | Eastman Kodak Co | Color photographic elements and process |
GB1195302A (en) * | 1966-08-30 | 1970-06-17 | Fuji Photo Film Co Ltd | Spectrally Sensitized Silver Halide Emulsions |
US3663211A (en) * | 1969-07-02 | 1972-05-16 | Gaf Corp | Silver halide emulsions containing unsymmetrical trimethine sensitizing dyes |
JPS5724533B2 (en) * | 1973-12-10 | 1982-05-25 | ||
JPS5852577B2 (en) * | 1977-02-10 | 1983-11-24 | 富士写真フイルム株式会社 | supersensitized photographic emulsion |
JPS59165049A (en) * | 1983-03-11 | 1984-09-18 | Fuji Photo Film Co Ltd | Silver halide photosensitive material |
US4725529A (en) | 1985-04-30 | 1988-02-16 | Konishiroku Photo Industry Co., Ltd. | Developing inhibitor arrangment in light-sensitive silver halide color photographic materials |
CA1267557A (en) | 1985-05-16 | 1990-04-10 | Shigeharu Koboshi | Method for color-developing a silver halide photographic light-sensitive material |
US5354646A (en) * | 1986-03-26 | 1994-10-11 | Konishiroku Photo Industry Co., Ltd. | Method capable of rapidly processing a silver halide color photographic light-sensitive material |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2112139A (en) * | 1935-07-05 | 1938-03-22 | Eastman Kodak Co | Acylmethylene derivatives of arylothiazolines and aryloselenazolines |
US2298732A (en) * | 1940-12-16 | 1942-10-13 | Eastman Kodak Co | Polymethine base |
BE526524A (en) * | 1953-02-27 | |||
US2694638A (en) * | 1953-08-13 | 1954-11-16 | Eastman Kodak Co | Supersensitization of carbocyanine dyes with hemicyanine bases |
BE540705A (en) * | 1954-08-23 |
-
0
- BE BE579594D patent/BE579594A/xx unknown
-
1958
- 1958-06-19 US US743069A patent/US2945763A/en not_active Expired - Lifetime
-
1959
- 1959-06-16 GB GB20535/59A patent/GB914256A/en not_active Expired
- 1959-06-19 FR FR797986A patent/FR1228644A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
BE579594A (en) | |
US2945763A (en) | 1960-07-19 |
FR1228644A (en) | 1960-08-31 |
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