US2490745A - Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts - Google Patents
Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts Download PDFInfo
- Publication number
- US2490745A US2490745A US2126A US212648A US2490745A US 2490745 A US2490745 A US 2490745A US 2126 A US2126 A US 2126A US 212648 A US212648 A US 212648A US 2490745 A US2490745 A US 2490745A
- Authority
- US
- United States
- Prior art keywords
- silver halide
- quaternary salts
- quaternary
- group
- carbon atoms
- 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
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
- G03C1/09—Noble metals or mercury; Salts or compounds thereof; Sulfur, selenium or tellurium, or compounds thereof, e.g. for chemical sensitising
-
- 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
- G03C1/04—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with macromolecular additives; with layer-forming substances
Definitions
- benzothiazole, benzoselenazole, benzoxazole, napthothiazole, simple thiazole and thiazoline quaternary salts when incorporated in gelatino-silver-halide emulsions for example in a concentration of from 2 to 8 mg. per 100 cc. of emulsion, act as antifoggants for the emulsions.
- pyridinium and quinolinium quaternary salts act to supersensitize cyanine dyes in photographic silver halide emulsions.
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)
- Paper (AREA)
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE486662D BE486662A (de) | 1948-01-13 | ||
US2126A US2490745A (en) | 1948-01-13 | 1948-01-13 | Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts |
FR1001730D FR1001730A (fr) | 1948-01-13 | 1949-01-12 | émulsions photographiques perfectionnées |
GB1021/49A GB656942A (en) | 1948-01-13 | 1949-01-13 | Improvements in sensitive photographic emulsions |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US2126A US2490745A (en) | 1948-01-13 | 1948-01-13 | Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts |
Publications (1)
Publication Number | Publication Date |
---|---|
US2490745A true US2490745A (en) | 1949-12-06 |
Family
ID=21699339
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US2126A Expired - Lifetime US2490745A (en) | 1948-01-13 | 1948-01-13 | Cellulose carboxylic ester silver halide emulsions sensitized with benzothiazole and benzoselenazole quaternary salts |
Country Status (4)
Country | Link |
---|---|
US (1) | US2490745A (de) |
BE (1) | BE486662A (de) |
FR (1) | FR1001730A (de) |
GB (1) | GB656942A (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2680686A (en) * | 1949-02-01 | 1954-06-08 | Gevaert Photo Producten | Sensitized and supersensitized photographic emulsions |
US2759821A (en) * | 1952-06-04 | 1956-08-21 | Eastman Kodak Co | X-ray film |
US3042521A (en) * | 1957-12-26 | 1962-07-03 | Gen Aniline & Film Corp | Antifoggants and stabilizers for photographic silver halide emulsion |
FR2198169A1 (de) * | 1972-09-04 | 1974-03-29 | Fuji Photo Film Co Ltd | |
US5389510A (en) * | 1993-12-16 | 1995-02-14 | Eastman Kodak Company | Photographic elements containing alkynylamine dopants |
US5413905A (en) * | 1993-12-16 | 1995-05-09 | Eastman Kodak Company | Photographic sensitivity increasing alkynylamine compounds and photographic elements |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3026201A (en) * | 1959-02-02 | 1962-03-20 | Gen Aniline & Film Corp | Antifoggants and stabilizers for photographic silver halide emulsions |
IT1204319B (it) * | 1986-04-28 | 1989-03-01 | Minnesota Mining & Mfg | Emulsione agli alogenuri d'argento contenente un sale di n-alchenil-tiazolio 2-non-sostituito come stabilizzatore dell'immagine latente ed elementi fotografici che contengono detta emulsione |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2110491A (en) * | 1936-04-16 | 1938-03-08 | Eastman Kodak Co | Photographic emulsions |
US2131038A (en) * | 1932-05-26 | 1938-09-27 | Eastman Kodak Co | Photographic emulsion containing alkyl quaternary salts of thiazoles and the like asantifoggants |
GB496049A (en) * | 1937-04-19 | 1938-11-21 | Ig Farbenindustrie Ag | Improved manufacture of light-sensitive photographic preparations |
US2271623A (en) * | 1939-03-30 | 1942-02-03 | Eastman Kodak Co | Photographic emulsion |
US2334864A (en) * | 1942-02-02 | 1943-11-23 | Eastman Kodak Co | Photographic emulsion |
-
0
- BE BE486662D patent/BE486662A/xx unknown
-
1948
- 1948-01-13 US US2126A patent/US2490745A/en not_active Expired - Lifetime
-
1949
- 1949-01-12 FR FR1001730D patent/FR1001730A/fr not_active Expired
- 1949-01-13 GB GB1021/49A patent/GB656942A/en not_active Expired
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2131038A (en) * | 1932-05-26 | 1938-09-27 | Eastman Kodak Co | Photographic emulsion containing alkyl quaternary salts of thiazoles and the like asantifoggants |
US2110491A (en) * | 1936-04-16 | 1938-03-08 | Eastman Kodak Co | Photographic emulsions |
GB496049A (en) * | 1937-04-19 | 1938-11-21 | Ig Farbenindustrie Ag | Improved manufacture of light-sensitive photographic preparations |
US2271623A (en) * | 1939-03-30 | 1942-02-03 | Eastman Kodak Co | Photographic emulsion |
US2334864A (en) * | 1942-02-02 | 1943-11-23 | Eastman Kodak Co | Photographic emulsion |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2680686A (en) * | 1949-02-01 | 1954-06-08 | Gevaert Photo Producten | Sensitized and supersensitized photographic emulsions |
US2759821A (en) * | 1952-06-04 | 1956-08-21 | Eastman Kodak Co | X-ray film |
US3042521A (en) * | 1957-12-26 | 1962-07-03 | Gen Aniline & Film Corp | Antifoggants and stabilizers for photographic silver halide emulsion |
FR2198169A1 (de) * | 1972-09-04 | 1974-03-29 | Fuji Photo Film Co Ltd | |
US5389510A (en) * | 1993-12-16 | 1995-02-14 | Eastman Kodak Company | Photographic elements containing alkynylamine dopants |
US5413905A (en) * | 1993-12-16 | 1995-05-09 | Eastman Kodak Company | Photographic sensitivity increasing alkynylamine compounds and photographic elements |
Also Published As
Publication number | Publication date |
---|---|
BE486662A (de) | |
GB656942A (en) | 1951-09-05 |
FR1001730A (fr) | 1952-02-27 |
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