GB560082A - Improvements in sensitive photographic emulsions - Google Patents
Improvements in sensitive photographic emulsionsInfo
- Publication number
- GB560082A GB560082A GB5716/42A GB571642A GB560082A GB 560082 A GB560082 A GB 560082A GB 5716/42 A GB5716/42 A GB 5716/42A GB 571642 A GB571642 A GB 571642A GB 560082 A GB560082 A GB 560082A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bromide
- nitrogen atom
- ethyl
- perchlorate
- phenylethyl
- 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
-
- 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
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)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Nitrogen Condensed Heterocyclic Rings (AREA)
Abstract
A light-sensitive silver bromide, chlorobromide, bromiodide, or chloro-bromiodide emulsion is sensitized by incorporating in the emulsion up to 4 grams per gram-mole of silver halide of a non-surface-active cyclammonium quaternary salt which contains only carbon and nitrogen atoms in the heterocyclic nucleus embodying the cyclammonium nitrogen atom, and which contains not more than one quaternary nitrogen atom, and in which the heterocyclic nucleus does not bear a substituent containing an aliphatic unsaturated linkage conjugated through the nucleus with the quaternary nitrogen atom, or by incorporating in the emulsion a non-surface-active cyclammonium non-quaternary salt in which only one hydrogen atom is attached directly to the cyclammonium nitrogen atom and only two of the remaining valencies of the nitrogen atom are employed in the formation of the cyclic nucleus, and which contains only carbon and nitrogen atoms in the cyclic nucleus embodying the cyclammonium nitrogen atom and contains at the most only one quaternary nitrogen atom, which if present does not form part of a cyclic nucleus bearing a substituent containing an aliphatic unsaturated linkage conjugated through the nucleus with the quaternary nitrogen atom. The cyclammonium quaternary salt may be one in which the quaternary nitrogen atom is the nitrogen atom of a pyridine nucleus, e.g. pyridine, quinoline, isoquinoline, and benzoquinoline quaternary salts, or one in which the quaternary nitrogen atom is the nitrogen atom of a reduced pyridine nucleus, e.g. quaternary salts of N-alkyl piperidines, or one in which the quaternary nitrogen atom is the nitrogen atom of a benzimidazole or indazole nucleus. Aralkyl quaternary (e.g. b -phenylethyl and g -phenyl-n-propyl) salts are preferably employed, and may carry substituents, e.g. alkyl, alkoxy, arylmercapto, carboxyalkyl, halogen, carboxy, or thioalkyl, but usually not nitro, sulphonic acid, sulphonate, and like groups. The salt is incorporated in the emulsion in the form of an aqueous or methyl alcohol solution, e.g. in amount between about 0.2 and 4 grams of salt per gram-mole of silver halide. The salt may be incorporated in the emulsion before, simultaneously with, or after a sensitizing dye. Sensitizing dyes are incorporated in methyl or ethyl alcohol or acetone solution. The salts depress the sensitivity produced by acid sensitizing dyes (containing sulphonic, sulphinic, or carboxylic or like groups or salt forms thereof), and non-acid sensitizing dyes are preferably used. A supersensitizing combination (e.g. of 3 : 31-diethyl-9-methylthiacarbocyanines with 21-cyanines) of sensitizing dyes may be used. The use of merocyanine sensitizing dyes is referred to. The cyclammonium salts are preferably added after washing the emulsions and prior to coating. Examples specified are a -picoline-b -phenylethyl bromide, g -phenylmercaptopyridine ethiodide, 2-methylquinoline methiodide, 2-methoxyquinoline ethobromide, N-b -phenylethylpyridinium bromide, N - ethyl - 4 - phenylmercaptopyridinium iodide, N-g -phenyl-n-propyl-a -picolinium bromide, N-b -phenylethyl-a -picolinium iodide, N-b -phenylethyl-b -picolinium bromide, N - b - phenylethyl - g - picolinium bromide, N-ethyl-6-methylquinolinium iodide, N-ethyl-6-methoxyquinolinium bromide, N - b - phenylethylquinolinium bromide, N-ethylquinaldinium bromide, N - b - hydroxyethyllepidinium perchlorate, N - b - acetoxyethyllepidinium perchlorate, N - benzylpyridinium bromide, N - cinnamylpyridinium perchlorate, N - p - chlorobenzylpyridinium perchlorate, N - cinnamyl - a - picolinium perchlorate, N - b - phenylethyl - 3 - carbethoxypyridinium bromide, N - b - phenylethyl - quinaldinium bromide, N - b - phenylethylisoquinolinium bromide, N-benzyl-a -picolinium bromide, N-b -hydroxyethylquinaldinium perchlorate, N - b - phenoxyethylquinaldinium perchlorate, N-benzyllepidinium perchlorate, N-phenacyl-lepidinium perchlorate, N - o - chlorobenzylpyridinium bromide, 4 - methylmercapto - N - phenylpyridinium p - toluenesulphonate, N - benzylquinaldinium bromide, N-methyl - N-g -phenyl-n - propylpiperidinium bromide, N-b -phenylethyl - lepidinium bromide, N - p - chlorophenyl-pyridinium bromide, N-methyl-a -picolinium iodide, N - methyl. - a - picolinium p - toluenesulphonate, N - b - phenoxyethyl - a - picolinium bromide, N - ethyl - 2 - piperidylquinolinium iodide, N - ethyl - 2 - b - naphthoxyquinolinium iodide, N - ethyl - 2 - b - hydroxyethylquinolinium iodide, N-benzylquinaldinium perchlorate, N - phenylpyridinium bromide, N - ethyl - g - phenylmercaptopyridinium p - toluenesulphonate, N - b - phenylethylpiperidinium bromide, N - methyl - N - b - phenylethylpiperidinium bromide, N-ethyl-2 : 6-dimethylpyridinium iodide, N-ethyl-2 : 4 : 6-trimethylpyridinium iodide, N-ethyl-4-ethylpyridinium bromide, N - b - phenylethylbenzimidazolium bromide, g -phenylmercaptopyridine ethiodide, 2-methylquinoline methiodide, 2 - methoxyquinoline ethiobromide and, 1-methyl-b -phenylethylindazolium p-toluenesulphonate. Numerous sensitizing dyes are referred to. The silver halide emulsion may have a gelatine, cellulose derivative, or resin binder, and may be carried on a cellulose nitrate or acetate, polyvinyl acetal resin, glass, metal, or paper support. N - (b - phenylethyl) - piperidinium bromide is prepared by heating piperidine with b -phenylethyl bromide. Specifications 454,687, 498,290, [Group XX], 513,170, 514,375, 557,178 and 558,710 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US429282A US2334864A (en) | 1942-02-02 | 1942-02-02 | Photographic emulsion |
Publications (1)
Publication Number | Publication Date |
---|---|
GB560082A true GB560082A (en) | 1944-03-20 |
Family
ID=9801290
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5716/42A Expired GB560082A (en) | 1942-02-02 | 1942-04-28 | Improvements in sensitive photographic emulsions |
Country Status (5)
Country | Link |
---|---|
US (1) | US2334864A (en) |
BE (1) | BE467068A (en) |
DE (1) | DE857308C (en) |
FR (1) | FR942831A (en) |
GB (1) | GB560082A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB615880A (en) * | 1946-08-20 | 1949-01-12 | John David Kendall | Improvements in or relating to silver halide photographic emulsions |
BE486662A (en) * | 1948-01-13 | |||
US2784090A (en) * | 1952-11-08 | 1957-03-05 | Eastman Kodak Co | Stabilization of emulsions sensitized with onium compounds |
US3146102A (en) * | 1960-08-22 | 1964-08-25 | Eastman Kodak Co | Photographic multicolor diffusion transfer process using dye developers |
US3260597A (en) * | 1960-12-02 | 1966-07-12 | Eastman Kodak Co | Photographic multicolor diffusion transfer process using dye developers and development arrestors |
CA685877A (en) * | 1961-03-27 | 1964-05-05 | Canadian Kodak Co. Limited | Photographic multicolor diffusion transfer process using dye developers |
DE1240399B (en) * | 1963-12-17 | 1967-05-11 | Agfa Ag | Non-spectrally sensitized silver halide emulsion with non-sensitizing quaternary cycloammonium salts |
JPS51120223A (en) * | 1975-04-14 | 1976-10-21 | Konishiroku Photo Ind Co Ltd | Halogenized silver color photosensitive materials |
JPS59191032A (en) * | 1983-04-13 | 1984-10-30 | Fuji Photo Film Co Ltd | Silver halide photosensitive material |
-
0
- BE BE467068D patent/BE467068A/xx unknown
-
1942
- 1942-02-02 US US429282A patent/US2334864A/en not_active Expired - Lifetime
- 1942-04-28 GB GB5716/42A patent/GB560082A/en not_active Expired
-
1946
- 1946-06-14 FR FR942831D patent/FR942831A/en not_active Expired
-
1950
- 1950-10-02 DE DEE2753A patent/DE857308C/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US2334864A (en) | 1943-11-23 |
DE857308C (en) | 1952-11-27 |
BE467068A (en) | |
FR942831A (en) | 1949-02-18 |
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