GB489214A - Improvements relating to photographic diazo type processes - Google Patents
Improvements relating to photographic diazo type processesInfo
- Publication number
- GB489214A GB489214A GB2908237A GB2908237A GB489214A GB 489214 A GB489214 A GB 489214A GB 2908237 A GB2908237 A GB 2908237A GB 2908237 A GB2908237 A GB 2908237A GB 489214 A GB489214 A GB 489214A
- Authority
- GB
- United Kingdom
- Prior art keywords
- improvements relating
- type processes
- diazo type
- aniline
- nitro
- 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
- G03C1/52—Compositions containing diazo compounds as photosensitive substances
- G03C1/54—Diazonium salts or diazo anhydrides
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Diazo compounds derived from 4-carbalkoxyamino - 2 : 5 - dialkoxy - 1 - aniline are used in light-sensitive layers. They may be prepared by condensing 4-nitro-2 : 5-dialkoxyaniline with an alkyl chloroformate and reducing the nitro-group, or by condensing 2 : 5-dialkoxyaniline with an alkyl chloroformate, nitrating, and reducing the nitro-group. In examples, the diazo compounds of 4-carbomethoxyamino-2 : 5-diethoxy-1-aniline and 4-carboethoxy-2 : 5-diethoxy-1-aniline are used.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2908237A GB489214A (en) | 1937-10-25 | 1937-10-25 | Improvements relating to photographic diazo type processes |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2908237A GB489214A (en) | 1937-10-25 | 1937-10-25 | Improvements relating to photographic diazo type processes |
Publications (1)
Publication Number | Publication Date |
---|---|
GB489214A true GB489214A (en) | 1938-07-21 |
Family
ID=10285869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2908237A Expired GB489214A (en) | 1937-10-25 | 1937-10-25 | Improvements relating to photographic diazo type processes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB489214A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442061A (en) * | 1944-09-26 | 1948-05-25 | Gen Aniline & Film Corp | Acid stabilized light-sensitive diazotype coating |
-
1937
- 1937-10-25 GB GB2908237A patent/GB489214A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2442061A (en) * | 1944-09-26 | 1948-05-25 | Gen Aniline & Film Corp | Acid stabilized light-sensitive diazotype coating |
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