GB632638A - Improvements in and relating to a process for sensitising photographic emulsions - Google Patents
Improvements in and relating to a process for sensitising photographic emulsionsInfo
- Publication number
- GB632638A GB632638A GB22940/45A GB2294045A GB632638A GB 632638 A GB632638 A GB 632638A GB 22940/45 A GB22940/45 A GB 22940/45A GB 2294045 A GB2294045 A GB 2294045A GB 632638 A GB632638 A GB 632638A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphate
- methylvinyl
- methyl
- ethyl
- methoxy
- 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
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)
- Thiazole And Isothizaole Compounds (AREA)
Abstract
2 - (b - Methoxy : b - methylvinyl) - benzthiazole ethyl methyl sulphate is prepared by refluxing together 2 - acetylmethylene - 3 - ethyldihydrobenzthiazole and dimethyl sulphate in benzene, 2 - (b - methoxy : b - methylvinyl) - a - naphthathiazole ethyl methyl sulphate, 2 - (b - methoxy : b -methylvinyl)-benzthiazole benzyl ethyl sulphate, 2 - (b - methoxy : b - methylvinyl) - benzthiazole dimethyl sulphate, 2 - (b - ethoxy : b - methylvinyl) - benzselenazole methyl ethyl sulphate, 2-(b - ethoxy : b - methylvinyl) - 6 - methylbenzthiazole methyl ethyl sulphate, 2-(b -ethoxy : b -methylvinyl) - benzthiazole ethiodide, 2 - (b -methoxy : a : b - dimethylvinyl) - benzthiazole ethyl methyl sulphate, 2-(b -carboxymethoxy : b -methylvinyl)-benzthiazole ethochloride, and 2-(b -methoxy : b : methylvinyl) - a - naphthathiazole dimethyl sulphate are similarly prepared.ALSO:Mesoalkoxy-substituted carbocyanine dyes of the general formula <FORM:0632638/IV (c)/1> wherein Y and Z represent the same or different atom groupings to complete 5- or 6-membered heterocyclic rings, R is alkyl or substituted alkyl, R1 and R11 are the same or different alkyl, substituted alkyl, aryl, or aralkyl, R111 is hydrogen or alkyl, and X is an acid residue, are prepared by condensing a 2-(b -methyl-b -alkoxyvinyl)-cyclammonium salt of the general formula <FORM:0632638/IV (c)/2> with a cyclammonium quaternary salt having in the a - or g -position to the quaternary nitrogen atom a group capable of reacting with the quaternary N atom. 3 : 31-Diethyl-9-methoxyoxathiacarbocyanineiodide is prepared by refluxing together 2 - (b - methyl : b - methoxyvinyl)-benzthiazole ethyl methyl sulphate and 2-methylmercaptobenzoxazole ethyl-p-toluenesulphonate in acetic anhydride containing triethylamine, and adding aqueous K1 solution. 3 : 31 - Diethyl - 9 - methoxy - 41 : 51 - benzoxothiacarbocyanine bromide, 3 - methyl - 31-benzyl - 9 - ethoxyoxathiacarbocyanine methyl sulphate, 3 : 31 - dimethyl - 9 - methoxythiacarbocyanine bromide, 3 : 31 - dimethyl - 9-ethoxyselenathiacarbocyanine iodide, 3 : 31 : 6-trimethyl - 9 - ethoxy - 51 - methylmercaptothiathiazolocarbocyanine iodide, 3 : 31 - diethyl-9 - carboxymethoxythiacarbocyanine perchlorate, 3 : 31 - diethyl - 9 - ethoxythiacarbocyanine iodide, and 11 - ethyl - 3 - methyl - 4 : 5 - benzthia - 21 - quinocarbocyanine iodide are similarly prepared.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE632638X | 1943-12-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB632638A true GB632638A (en) | 1949-11-28 |
Family
ID=6579069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22940/45A Expired GB632638A (en) | 1943-12-31 | 1945-09-06 | Improvements in and relating to a process for sensitising photographic emulsions |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB632638A (en) |
-
1945
- 1945-09-06 GB GB22940/45A patent/GB632638A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB904332A (en) | Improvements in or relating to sensitized photographic emulsions and to new sensitizing dyes | |
| GB637387A (en) | Trinuclear cyanine dyes and photographic silver halide emulsions sensitized with the dyes | |
| GB632638A (en) | Improvements in and relating to a process for sensitising photographic emulsions | |
| GB776050A (en) | Improvements in carbocyanine dyes, processes of preparing them and photographic emulsions containing them | |
| GB620482A (en) | Trinuclear cyanine dyes and photographic light-sensitive elements containing them | |
| GB684707A (en) | Improvements in or relating to the production of dyestuffs and to the sensitising of photographic emulsions therewith | |
| US2471488A (en) | Cyanine dyestuffs | |
| GB815172A (en) | Improvements in sensitising dyes for photographic silver halide emulsions | |
| GB641805A (en) | Process of producing cyanine dyes | |
| GB629123A (en) | Improvements in the manufacture of intermediates for the production of dyes, in the manufacture of polymethin dyes and in photographic silver salt emulsions containing such dyes | |
| GB968396A (en) | Improvements in dye sensitized photographic emulsions | |
| GB801275A (en) | New photo-sensitizing dyestuffs and their manufacture and products containing them | |
| GB839020A (en) | Improvements in or relating to cyanine and merocyanine dyes | |
| GB675227A (en) | Improvements in or relating to cyanine dyes | |
| US3133817A (en) | Photographic emulsions containing new sensitizing dyes | |
| GB617110A (en) | Improvements in or relating to the manufacture of silver halide emulsions | |
| GB656515A (en) | Improvements in and relating to cyanine and styryl dyestuffs or dye bases and to thepreparation thereof and to photographic emulsions containing the same | |
| GB927945A (en) | Improved photographic silver halide emulsions and sensitizing dyes therefor | |
| GB620802A (en) | Improvements in or relating to dyestuffs | |
| GB786168A (en) | Photographic emulsions | |
| GB640094A (en) | Improvements in and relating to hemicyanine dyestuffs and photographic silver halideemulsions sensitised therewith | |
| GB789136A (en) | Photographic emulsions | |
| GB813178A (en) | Improvements in photographic sensitizing dyes and intermediates thereof | |
| GB618073A (en) | Process for the production of n-arylthiazolinium quaternary salts and of dyes therefrom and for the incorporation of n-arylthiazolinium dyes in photographic emulsions | |
| GB922093A (en) | Polymethine dyes and photographic emulsions containing them |