GB708065A - Improvements in the production of photographic images - Google Patents
Improvements in the production of photographic imagesInfo
- Publication number
- GB708065A GB708065A GB7421/51A GB742151A GB708065A GB 708065 A GB708065 A GB 708065A GB 7421/51 A GB7421/51 A GB 7421/51A GB 742151 A GB742151 A GB 742151A GB 708065 A GB708065 A GB 708065A
- Authority
- GB
- United Kingdom
- Prior art keywords
- prepared
- acid
- chloride
- general formula
- compounds
- 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
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/62—Benzothiazoles
- C07D277/68—Benzothiazoles 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
- C07D277/82—Nitrogen 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
- G03C1/35—Antiplumming agents, i.e. antibronzing agents; Toners
- G03C1/355—Organic derivatives of bivalent sulfur, selenium or tellurium
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
- Y10S430/13—Antibronze agent or process
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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
Abstract
Compounds of the general formula <FORM:0708065/IV (b)/1> wherein R is alkyl, R2 is H or an alkali metal atom or ammonium group, and D represents a phenylene group, which may be substituted, are prepared by hydrolysing compounds of the above general formula, wherein R2 is an acyl group, in the presence of an alkali metal or ammonium hydroxide, giving compounds wherein R2 is an alkali metal atom or ammonium group, and then acidifying, giving compounds wherein R2 is H. 2-a -Mercaptopropionamido-6-ethoxybenzthiazole is prepared by adding aqueous sodium hydroxide to 2-a -acetylthiopropionamido - 6 - ethoxybenzthiazole dissolved in acetone, diluting, filtering, and adding hydrochloric acid. 2 - a - Mercaptopropionamidobenzthiazole 2 - a - mercaptopropionamido - 6 - methoxybenzthiazole, 6 - chloro - 2 - a - mercaptopropionamidobenzthiazole, and 2 - a - mercaptobutyramidobenzthiazole are similarly prepared. Compounds of the above general formula, wherein R and D are as above and R2 is an acyl group, are prepared by condensing an amine of the general formula <FORM:0708065/IV (b)/2> with an acid chloride of the general formula <FORM:0708065/IV (b)/3> in the presence of an acid binding agent. 2 - a - Acetylthiopropionamido - 6 - ethoxybenzthiazole is prepared by adding a -acetylthiopropionyl chloride to a mixture of 2-amino-6-ethoxybenzthiazole, dioxane, and quinoline. 2 - a - Acetylthiopropionamidobenzthiazole, 2 - a - acetylthiopropionamido - 6 - methoxybenzthiazole, 6 - chloro - 2 - a - acetylthiopropionamidobenzthiazole, and 2 - a - acetylthiobutyramidobenzthiazole are similarly prepared. a - Acetylthiopropionyl chloride is prepared by reacting together a -acetylthiopropionic acid and thionyl chloride. a - Acetylthiobutyryl chloride is similarly prepared. a - Acetylthiopropionic acid is prepared by acetylating a - mercaptopropionic acid with acetyl chloride, and a -acetylthiobutyric acid by acetylating a -mercaptobutyric acid with acetic anhydride. Specification 699,858 is referred to.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BE510333D BE510333A (en) | 1951-03-30 | ||
GB7421/51A GB708065A (en) | 1951-03-30 | 1951-03-30 | Improvements in the production of photographic images |
US253206A US2657136A (en) | 1951-03-30 | 1951-10-25 | Photographic antiplumming agents and compositions containing them |
FR1057981D FR1057981A (en) | 1951-03-30 | 1952-03-29 | New mercapto compounds, their manufacturing process and their applications in particular in photography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB7421/51A GB708065A (en) | 1951-03-30 | 1951-03-30 | Improvements in the production of photographic images |
Publications (1)
Publication Number | Publication Date |
---|---|
GB708065A true GB708065A (en) | 1954-04-28 |
Family
ID=9832805
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB7421/51A Expired GB708065A (en) | 1951-03-30 | 1951-03-30 | Improvements in the production of photographic images |
Country Status (4)
Country | Link |
---|---|
US (1) | US2657136A (en) |
BE (1) | BE510333A (en) |
FR (1) | FR1057981A (en) |
GB (1) | GB708065A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2852380A (en) * | 1955-06-21 | 1958-09-16 | Eastman Kodak Co | Photographic emulsions and solutions containing silver salts of thioglycolic derivatives |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2952687A (en) * | 1960-09-13 | Certain n- | ||
BE548687A (en) * | 1955-06-15 | |||
BE629343A (en) * | 1962-03-08 | |||
JP2003521476A (en) * | 1999-06-15 | 2003-07-15 | メルク エンド カムパニー インコーポレーテッド | Thiol derivative, metallo-β-lactamase inhibitor |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2040928A (en) * | 1936-05-19 | |||
US2051145A (en) * | 1931-05-06 | 1936-08-18 | Du Pont | Chlorinated aryl-thiazoles and process for their production |
US2282005A (en) * | 1940-03-02 | 1942-05-05 | Eastman Kodak Co | Phenazine and naphthazine fog inhibitor for photographic emulsions |
US2311103A (en) * | 1941-11-13 | 1943-02-16 | Eastman Kodak Co | Photographic silver halide emulsion |
-
0
- BE BE510333D patent/BE510333A/xx unknown
-
1951
- 1951-03-30 GB GB7421/51A patent/GB708065A/en not_active Expired
- 1951-10-25 US US253206A patent/US2657136A/en not_active Expired - Lifetime
-
1952
- 1952-03-29 FR FR1057981D patent/FR1057981A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2852380A (en) * | 1955-06-21 | 1958-09-16 | Eastman Kodak Co | Photographic emulsions and solutions containing silver salts of thioglycolic derivatives |
Also Published As
Publication number | Publication date |
---|---|
FR1057981A (en) | 1954-03-12 |
BE510333A (en) | |
US2657136A (en) | 1953-10-27 |
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