GB1318518A - Photographic fine grain silver halide materials - Google Patents
Photographic fine grain silver halide materialsInfo
- Publication number
- GB1318518A GB1318518A GB5453969A GB1318518DA GB1318518A GB 1318518 A GB1318518 A GB 1318518A GB 5453969 A GB5453969 A GB 5453969A GB 1318518D A GB1318518D A GB 1318518DA GB 1318518 A GB1318518 A GB 1318518A
- Authority
- GB
- United Kingdom
- Prior art keywords
- benzimidazole
- prepared
- sulpho
- refluxing
- solution
- 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
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/06—Benzimidazoles; Hydrogenated benzimidazoles with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/18—Benzimidazoles; Hydrogenated benzimidazoles with aryl radicals directly attached in position 2
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D235/00—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings
- C07D235/02—Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, condensed with other rings condensed with carbocyclic rings or ring systems
- C07D235/04—Benzimidazoles; Hydrogenated benzimidazoles
- C07D235/24—Benzimidazoles; Hydrogenated benzimidazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
- C07D235/28—Sulfur atoms
-
- 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
- G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
- G03C1/34—Fog-inhibitors; Stabilisers; Agents inhibiting latent image regression
- G03C1/346—Organic derivatives of bivalent sulfur, selenium or tellurium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- General Physics & Mathematics (AREA)
- Plural Heterocyclic Compounds (AREA)
- Thiazole And Isothizaole Compounds (AREA)
Abstract
1318518 Benzimidazole derivatives AGFAGEVAERT 28 Sept 1970 [6 Nov 1969] 54539/69 Heading C2C [Also in Division G2] 2 - [Benzimidazol - 2 - ylmethylthiomethyl]- benzimidazole is prepared by adding an ethanolic solution of the sodium salt of 2-mercaptomethyl - benzimidazole to a suspension of 2 - chloromethyl - benzimidazole in ethanol and refluxing. 2 - (# - Methylthio - ethyl) - 5- sulpho - benzimidazole is prepared by refluxing 3,4-diaminobenzene sulphonic acid and #- methylthiopropionic acid in 6N hydrochloric acid. 2 - (Phenylselenomethyl) - 5 - sulphobenzimidazole is prepared by refluxing 3,4- diaminobenzene sulphonic acid and (phenylseleno) acetic acid (prepared according to J1. Chem. Soc. 1928, 2293) in 6N hydrochloric acid and dioxan. 2 - (Phenylthiomethyl) - 5 - sulphobenzimidazole is prepared similarly. 2-(1,3,3- Trimethyl - γ - sulphopropylthiomethyl)- benzimidazole is prepared by adding 1,1,3-trimethylpropanesultone to a solution of 2-mercaptomethylbenzimidazole and sodium methylate in methanol and refluxing. 1-Ethyl-2-(γ-methylthiopropyl) - 5 - sulpho-benzimidazole is prepared by adding #-methylmercaptobutyric acid to a solution of N - ethyl - 4 - sulpho - o - phenylenediamine in 5N hydrochloric acid and refluxing. 2 - (# - Ethylthio - ethylthio) - 5 - sulpho - benzimidazole is prepared by adding a solution of 2-chloroethylthioethane in dimethylformamide to a solution of the disodium salt of 2-mercapto- 5-sulpho-benzimidazole in dimethylformamide and heating.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB5453969 | 1969-11-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1318518A true GB1318518A (en) | 1973-05-31 |
Family
ID=10471348
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5453969A Expired GB1318518A (en) | 1969-11-06 | 1969-11-06 | Photographic fine grain silver halide materials |
Country Status (7)
Country | Link |
---|---|
US (1) | US3661592A (en) |
JP (1) | JPS4937846B1 (en) |
BE (1) | BE758242A (en) |
CH (1) | CH558550A (en) |
DE (1) | DE2053961A1 (en) |
FR (1) | FR2071785A5 (en) |
GB (1) | GB1318518A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3971664A (en) * | 1970-10-27 | 1976-07-27 | Fuji Photo Film Co., Ltd. | Fine grain silver halide emulsions with polyheteronuclear sensitizing dyes |
BE792093A (en) * | 1971-12-09 | 1973-05-30 | Agfa Gevaert Nv | VOOR PROCESS OF BEREIDING VAN FOTOGRAFISCHE FIJNKORRELIGE ZILVERHALOGENIDE-EMULSIES |
DE2758711A1 (en) * | 1977-12-29 | 1979-07-19 | Agfa Gevaert Ag | LIGHT SENSITIVE PHOTOGRAPHIC MATERIAL |
DE3019733A1 (en) * | 1980-05-23 | 1981-12-03 | Agfa-Gevaert Ag, 5090 Leverkusen | METHOD FOR PRODUCING SILVER HALOGENID EMULSIONS, PHOTOGRAPHIC MATERIALS AND METHOD FOR PRODUCING PHOTOGRAPHIC IMAGES |
JPS58160948A (en) * | 1982-03-18 | 1983-09-24 | Konishiroku Photo Ind Co Ltd | Lippmann type photosensitive silver halide material |
US4814263A (en) * | 1987-07-21 | 1989-03-21 | Minnesota Mining And Manufacturing Company | Direct-positive silver halide emulsion |
JP2687179B2 (en) * | 1989-12-05 | 1997-12-08 | 富士写真フイルム株式会社 | Method for producing silver halide emulsion and light-sensitive material and recording method using the same |
US6143484A (en) * | 1999-05-06 | 2000-11-07 | Eastman Kodak Company | Method for stabilizing photographic dispersions in melts containing fine grain silver halide |
DE19933258A1 (en) * | 1999-07-15 | 2001-01-18 | Agfa Gevaert Ag | Preparation of silver halide emulsions |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
BE576568A (en) * | 1958-03-11 | |||
US3255202A (en) * | 1963-08-23 | 1966-06-07 | Union Carbide Corp | Process for the preparation of 2-(acylamidoalkyl)benzimidazoles |
-
0
- BE BE758242D patent/BE758242A/en unknown
-
1969
- 1969-11-06 GB GB5453969A patent/GB1318518A/en not_active Expired
-
1970
- 1970-10-02 US US77694A patent/US3661592A/en not_active Expired - Lifetime
- 1970-10-19 FR FR7037731A patent/FR2071785A5/fr not_active Expired
- 1970-10-29 CH CH1598870A patent/CH558550A/en not_active IP Right Cessation
- 1970-10-30 JP JP45096380A patent/JPS4937846B1/ja active Pending
- 1970-11-03 DE DE19702053961 patent/DE2053961A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
JPS4937846B1 (en) | 1974-10-12 |
BE758242A (en) | 1971-04-30 |
DE2053961A1 (en) | 1971-05-13 |
US3661592A (en) | 1972-05-09 |
FR2071785A5 (en) | 1971-09-17 |
CH558550A (en) | 1975-01-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
435 | Patent endorsed 'licences of right' on the date specified (sect. 35/1949) | ||
PCNP | Patent ceased through non-payment of renewal fee |