GB2019429A - Purification process - Google Patents
Purification processInfo
- Publication number
- GB2019429A GB2019429A GB7907475A GB7907475A GB2019429A GB 2019429 A GB2019429 A GB 2019429A GB 7907475 A GB7907475 A GB 7907475A GB 7907475 A GB7907475 A GB 7907475A GB 2019429 A GB2019429 A GB 2019429A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dmf
- impurities
- naphthol
- amino
- mixing
- 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.)
- Granted
Links
- 238000000746 purification Methods 0.000 title 1
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 abstract 15
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 abstract 3
- 239000012535 impurity Substances 0.000 abstract 3
- ABJQKDJOYSQVFX-UHFFFAOYSA-N 4-aminonaphthalen-1-ol Chemical compound C1=CC=C2C(N)=CC=C(O)C2=C1 ABJQKDJOYSQVFX-UHFFFAOYSA-N 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000003208 petroleum Substances 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 239000000010 aprotic solvent Substances 0.000 abstract 1
- 238000009835 boiling Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 238000002425 crystallisation Methods 0.000 abstract 1
- 238000009792 diffusion process Methods 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 238000001953 recrystallisation Methods 0.000 abstract 1
- OBTWBSRJZRCYQV-UHFFFAOYSA-N sulfuryl difluoride Chemical group FS(F)(=O)=O OBTWBSRJZRCYQV-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
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
- G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
- G03C7/30—Colour processes using colour-coupling substances; Materials therefor; Preparing or processing such materials
- G03C7/305—Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers
- G03C7/30541—Substances liberating photographically active agents, e.g. development-inhibiting releasing couplers characterised by the released group
- G03C7/30547—Dyes
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Color Printing (AREA)
Abstract
Naphth-1-ol-4-sulphonamido derivatives useful in colour diffusion transfer photography e.g. as described in U.K. specification 1,405,662, when made by reaction of a 4-amino-1- naphthol with a dye containing a sulphonyl fluoride substituent, contain impurities including oxidation products of the 4-amino-1-naphthol. These impurities, which detract from the photographic performance of the derivatives, cannot always be removed to a sufficient extent by recrystallisation. According to the invention the crude derivative is dissolved in dimethyl formamide (DMF) or other aprotic solvent and the impurities extracted with petroleum of boiling range from 40 DEG -105 DEG C. The purified derivative may be isolated by mixing the DMF solution (preferably after removal of residual petroleum) with an acid solution or mixing the DMF solution with ethyl acetate and removing the DMF with water followed by crystallisation. The magenta dye-releasing compound of the formula below is an example of the compounds which can be purified according to the invention. <IMAGE>
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB837778 | 1978-03-02 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2019429A true GB2019429A (en) | 1979-10-31 |
| GB2019429B GB2019429B (en) | 1982-07-07 |
Family
ID=9851373
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB7907475A Expired GB2019429B (en) | 1978-03-02 | 1979-03-02 | Purification process |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JPS54124023A (en) |
| DE (1) | DE2908144A1 (en) |
| FR (1) | FR2418947A1 (en) |
| GB (1) | GB2019429B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3580785D1 (en) * | 1984-05-10 | 1991-01-17 | Fuji Photo Film Co Ltd | COLOR PHOTOGRAPHIC LIGHT SENSITIVE SILVER HALOGENIDE MATERIAL. |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3998637A (en) * | 1974-07-10 | 1976-12-21 | Eastman Kodak Company | Process for producing positive color diffusion transfer images using redox dye releasers |
-
1979
- 1979-03-01 JP JP2261879A patent/JPS54124023A/en active Pending
- 1979-03-02 GB GB7907475A patent/GB2019429B/en not_active Expired
- 1979-03-02 DE DE19792908144 patent/DE2908144A1/en not_active Withdrawn
- 1979-03-02 FR FR7905441A patent/FR2418947A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE2908144A1 (en) | 1979-09-20 |
| JPS54124023A (en) | 1979-09-26 |
| FR2418947B1 (en) | 1982-03-12 |
| FR2418947A1 (en) | 1979-09-28 |
| GB2019429B (en) | 1982-07-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |