GB1247369A - Yellow azo dye developers and their use in photographic materials - Google Patents
Yellow azo dye developers and their use in photographic materialsInfo
- Publication number
- GB1247369A GB1247369A GB61618/68A GB6161868A GB1247369A GB 1247369 A GB1247369 A GB 1247369A GB 61618/68 A GB61618/68 A GB 61618/68A GB 6161868 A GB6161868 A GB 6161868A GB 1247369 A GB1247369 A GB 1247369A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyes
- azo
- azo dye
- photographic materials
- dye
- 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
- G03C8/00—Diffusion transfer processes or agents therefor; Photosensitive materials for such processes
- G03C8/02—Photosensitive materials characterised by the image-forming section
- G03C8/08—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds
- G03C8/10—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds of dyes or their precursors
- G03C8/12—Photosensitive materials characterised by the image-forming section the substances transferred by diffusion consisting of organic compounds of dyes or their precursors characterised by the releasing mechanism
- G03C8/14—Oxidation of the chromogenic substances
- G03C8/16—Oxidation of the chromogenic substances initially diffusible in alkaline environment
- G03C8/18—Dye developers
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Silver Salt Photography Or Processing Solution Therefor (AREA)
- Coloring (AREA)
Abstract
1,247,369. Azo dyes. EASTMAN KODAK CO. 30 Dec., 1968 [29 Dec., 1967], No. 61618/68. Heading C4P. [Also in Divisions C2 and G2] The invention comprises azo dyes of formula wherein R is an alkoxy group and X is a yellow azo dye moiety. The dyes are used as dyedevelopers in the dye-developer diffusion transfer process described in Specification 804,971 (see Division G2). In examples the preparation by azo coupling of dyes wherein the residue shown above is linked to the phenyl residue of a phenylazo-pyrazolone dye either by way of an ethylene group or directly is described
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US69439767A | 1967-12-29 | 1967-12-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1247369A true GB1247369A (en) | 1971-09-22 |
Family
ID=24788655
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB61618/68A Expired GB1247369A (en) | 1967-12-29 | 1968-12-30 | Yellow azo dye developers and their use in photographic materials |
Country Status (3)
Country | Link |
---|---|
US (1) | US3502469A (en) |
FR (1) | FR1595466A (en) |
GB (1) | GB1247369A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5420856B2 (en) * | 1971-11-04 | 1979-07-26 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3141772A (en) * | 1963-08-09 | 1964-07-21 | Polaroid Corp | Photographic products, processes and compositions employing azo dye developers |
US3134672A (en) * | 1961-10-18 | 1964-05-26 | Polaroid Corp | Photographic products, compositions and processes employing azo dye developers |
-
1967
- 1967-12-29 US US694397A patent/US3502469A/en not_active Expired - Lifetime
-
1968
- 1968-12-24 FR FR1595466D patent/FR1595466A/fr not_active Expired
- 1968-12-30 GB GB61618/68A patent/GB1247369A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
US3502469A (en) | 1970-03-24 |
FR1595466A (en) | 1970-06-08 |
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