GB488374A - Improvements in photographic developers - Google Patents
Improvements in photographic developersInfo
- Publication number
- GB488374A GB488374A GB802/37A GB80237A GB488374A GB 488374 A GB488374 A GB 488374A GB 802/37 A GB802/37 A GB 802/37A GB 80237 A GB80237 A GB 80237A GB 488374 A GB488374 A GB 488374A
- Authority
- GB
- United Kingdom
- Prior art keywords
- developing compositions
- carbon atoms
- hydroxyl groups
- referred
- photographic
- 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
- G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
- G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
- G03C5/29—Development processes or agents therefor
- G03C5/305—Additives other than developers
Abstract
488,374. Photographic developing compositions. GROVES, W. W. (I. G. Farbenindustrie Akt.-Ges.) Jan. 11, 1937, No. 802. [Class 98 (ii)] An alkaline developer for photographic silver halide emulsions contains, instead of an inorganic alkali, a water-soluble oxyalkylamine having at least one alkyl chain containing two or more hydroxyl groups attached to different carbon atoms. Amino-derivatives of the sugars and carbohydrates having 5 and 6 carbon atoms and higher and lower homologues. Oxyalkylamines referred to are glucamine, methyl-, ethyl-, propyl- and dodecylglucamine, mannamine, galactamine, lactamine, fructosamine, arabinamine, xylamine, 1- or 2-aminopropane diol. Normal, fine grain, blueblack, brown, soft working, reversal developing compositions and developing compositions for use in the colour development process are referred to. The hydroxyl groups may be etherified or esterified, and internal ethers may be used.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEI0056606 | 1936-12-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB488374A true GB488374A (en) | 1938-07-06 |
Family
ID=7194393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB802/37A Expired GB488374A (en) | 1936-12-14 | 1937-01-11 | Improvements in photographic developers |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2181941A (en) |
| BE (1) | BE425071A (en) |
| CH (1) | CH201308A (en) |
| FR (1) | FR830642A (en) |
| GB (1) | GB488374A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE490074A (en) * | 1948-07-09 | |||
| IN186296B (en) * | 1992-05-11 | 2001-07-28 | Albright & Wilson |
-
0
- BE BE425071D patent/BE425071A/xx unknown
-
1937
- 1937-01-11 GB GB802/37A patent/GB488374A/en not_active Expired
- 1937-11-17 CH CH201308D patent/CH201308A/en unknown
- 1937-12-08 US US178726A patent/US2181941A/en not_active Expired - Lifetime
- 1937-12-10 FR FR830642D patent/FR830642A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| FR830642A (en) | 1938-08-04 |
| BE425071A (en) | |
| CH201308A (en) | 1938-11-30 |
| US2181941A (en) | 1939-12-05 |
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