GB815172A - Improvements in sensitising dyes for photographic silver halide emulsions - Google Patents
Improvements in sensitising dyes for photographic silver halide emulsionsInfo
- Publication number
- GB815172A GB815172A GB2948/57A GB294857A GB815172A GB 815172 A GB815172 A GB 815172A GB 2948/57 A GB2948/57 A GB 2948/57A GB 294857 A GB294857 A GB 294857A GB 815172 A GB815172 A GB 815172A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethyl
- silver halide
- halide emulsions
- photographic silver
- anilinovinyl
- 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
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/02—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups
- C09B23/06—Methine or polymethine dyes, e.g. cyanine dyes the polymethine chain containing an odd number of >CH- or >C[alkyl]- groups three >CH- groups, e.g. carbocyanines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Plural Heterocyclic Compounds (AREA)
Abstract
Unsymmetrical carbocyanine dyes of the general formula <FORM:0815172/IV (c)/1> wherein R and R1 are substituted or unsubstituted alkyl or aralkyl groups, R2 and R3 are alkyl, aryl or hydroxyalkyl groups, V is halogen, n and n1 are 1 or 2 and X is an anion, are prepared by reacting a quaternary salt of a chlorosubstituted 2-methyl benzimidazole with a quaternary salt of a halogen-substituted benzimidazole carrying a 2-(o -anilinovinyl) group. An example is given of the reaction of 1-ethyl-2-(o - anilinovinyl) - 5 : 6 - dichlorobenzimidazole ethyl - p - toluene sulphonate with 1 - ethyl - 2 - methyl - 5 - chlorobenzimidazole ethyl iodide. Specification 505,979, [Group XX], is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE812924X | 1954-10-22 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB815172A true GB815172A (en) | 1959-06-17 |
Family
ID=3881229
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30312/55A Expired GB812924A (en) | 1954-10-22 | 1955-10-24 | Improvements in sensitising dyes for photographic silver halide emulsions |
GB2948/57A Expired GB815172A (en) | 1954-10-22 | 1955-10-24 | Improvements in sensitising dyes for photographic silver halide emulsions |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30312/55A Expired GB812924A (en) | 1954-10-22 | 1955-10-24 | Improvements in sensitising dyes for photographic silver halide emulsions |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB812924A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4555481A (en) * | 1983-01-25 | 1985-11-26 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsions containing benzimidazolocarbocyanine dye having fluoroalkyl group at the nitrogen atom of benzimidazole |
US4675279A (en) * | 1984-07-25 | 1987-06-23 | Fuji Photo Film Co., Ltd. | Silver halide photographic materials containing tabular silver halide grains and a specified sensitizing dye |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3244526A (en) * | 1962-02-23 | 1966-04-05 | Gen Aniline & Film Corp | Benzimidazole cyanine dyes containing in alpha-position a carboethoxy group on the methine chain |
-
1955
- 1955-10-24 GB GB30312/55A patent/GB812924A/en not_active Expired
- 1955-10-24 GB GB2948/57A patent/GB815172A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4555481A (en) * | 1983-01-25 | 1985-11-26 | Fuji Photo Film Co., Ltd. | Silver halide photographic emulsions containing benzimidazolocarbocyanine dye having fluoroalkyl group at the nitrogen atom of benzimidazole |
US4675279A (en) * | 1984-07-25 | 1987-06-23 | Fuji Photo Film Co., Ltd. | Silver halide photographic materials containing tabular silver halide grains and a specified sensitizing dye |
Also Published As
Publication number | Publication date |
---|---|
GB812924A (en) | 1959-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES302622A1 (en) | Procedure for the preparation of heterociclic derivatives. (Machine-translation by Google Translate, not legally binding) | |
GB1186720A (en) | Photographic Emulsions | |
GB703520A (en) | Improvements in and relating to processes of making merocyanine dyes and to photographic silver halide emulsions containing them | |
GB815172A (en) | Improvements in sensitising dyes for photographic silver halide emulsions | |
GB764626A (en) | Improvements in sensitized photographic emulsions | |
GB1268164A (en) | Antistatic light sensitive silver halide photographic material | |
GB1409357A (en) | Spectrally-sensitized silver halide photographic emulsions | |
GB974723A (en) | Light sensitive gelatino-silver halide photographic emulsions | |
GB803783A (en) | Photographic materials | |
GB1281393A (en) | Methine dyes | |
GB1153344A (en) | Dyes, processes for their preparation and Photographic Silver Halide Emulsions Sensitized therewith | |
GB681390A (en) | Improvements in or relating to dyestuffs and photographic emulsions containing the same | |
US3672905A (en) | Novel dyes and photographic emulsions | |
GB1210009A (en) | Silver halide emulsions and sensitizing dyes therefor | |
GB1514876A (en) | Supersensitized silver halide photographic emulsions | |
GB1279493A (en) | Spectrally sensitized silver halide photographic emulsions | |
US3833566A (en) | Novel merocyanine dyes | |
GB635366A (en) | Sensitive photographic emulsions | |
GB632638A (en) | Improvements in and relating to a process for sensitising photographic emulsions | |
GB1197946A (en) | Photodevelopable Photographic Silver Halide Emulsions | |
GB625992A (en) | Improvements in or relating to photographic materials | |
GB1153765A (en) | Merocyanine Dye-Sensitized Photographic Materials comprising Silver Halide Emulsion Layers containing Azo-Dyes | |
GB857690A (en) | Improvements in the sensitization of photographic silver halide emulsions | |
GB922093A (en) | Polymethine dyes and photographic emulsions containing them | |
GB927945A (en) | Improved photographic silver halide emulsions and sensitizing dyes therefor |