FR2372789A1 - PERFECTED PROCESS FOR PREPARING 1-NITROANTHRAQUINONE - Google Patents
PERFECTED PROCESS FOR PREPARING 1-NITROANTHRAQUINONEInfo
- Publication number
- FR2372789A1 FR2372789A1 FR7736401A FR7736401A FR2372789A1 FR 2372789 A1 FR2372789 A1 FR 2372789A1 FR 7736401 A FR7736401 A FR 7736401A FR 7736401 A FR7736401 A FR 7736401A FR 2372789 A1 FR2372789 A1 FR 2372789A1
- Authority
- FR
- France
- Prior art keywords
- temperature
- mixture
- nitroanthraquinones
- nitroanthraquinone
- degrees
- 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
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Procédé de préparation de la 1-nitroanthraquinone par nitration de l'anthraquinone, traitement du mélange de nitration par des solvants organiques et rectification subséquente. On traite un mélange de nitroanthraquinones contenant au moins 60 % de 1-nitroanthraquinone et moins de 10 % d'anthraquinone par 0,8 à 3 parties en poids de nitrobenzène et/ou de filtrat de lavage recyclé et/ou des liqueurs mères à une température d'environ 130 à 170 degrés C, on refroidit la solution obtenue à une température d'environ 100 à 20 degrés C, on filtre le mélange de nitroanthraquinones qui précipite, on traite le résidu de filtration par 0,3 à 1,5 partie en poids de nitrobenzène pour 1 partie en poids du mélange de nitroanthraquinones, à une température comprise entre la température ambiante et 100 degrés C environ, on filtre et on sèche. On fond le mélange de nitroanthraquinones à une température d'environ 240 à 270 degrés C en le débarrassant éventuellement à la même température des résidus de solvants par dégazage et on le soumet ensuite à une rectification.Process for preparing 1-nitroanthraquinone by nitration of anthraquinone, treatment of the nitration mixture with organic solvents and subsequent rectification. A mixture of nitroanthraquinones containing at least 60% 1-nitroanthraquinone and less than 10% anthraquinone is treated with 0.8 to 3 parts by weight of nitrobenzene and / or recycled washing filtrate and / or mother liquors to a temperature of about 130 to 170 degrees C, the resulting solution is cooled to a temperature of about 100 to 20 degrees C, the mixture of nitroanthraquinones which precipitates is filtered, the filtration residue is treated with 0.3 to 1.5 part by weight of nitrobenzene for 1 part by weight of the mixture of nitroanthraquinones, at a temperature between room temperature and approximately 100 ° C., filtered and dried. The mixture of nitroanthraquinones is melted at a temperature of about 240 to 270 degrees C., optionally freeing it at the same temperature from solvent residues by degassing and then subjected to rectification.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19762654649 DE2654649C2 (en) | 1976-12-02 | 1976-12-02 | Process for the preparation of 1-nitroanthraquinone |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2372789A1 true FR2372789A1 (en) | 1978-06-30 |
| FR2372789B1 FR2372789B1 (en) | 1981-04-30 |
Family
ID=5994517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7736401A Granted FR2372789A1 (en) | 1976-12-02 | 1977-12-02 | PERFECTED PROCESS FOR PREPARING 1-NITROANTHRAQUINONE |
Country Status (4)
| Country | Link |
|---|---|
| CH (1) | CH632735A5 (en) |
| DE (1) | DE2654649C2 (en) |
| FR (1) | FR2372789A1 (en) |
| GB (1) | GB1560129A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3329453A1 (en) * | 1983-08-16 | 1985-03-07 | Bayer Ag, 5090 Leverkusen | METHOD FOR PRODUCING PURE 1-NITROANTHRACHINONE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE167699C (en) * | ||||
| FR2130801A5 (en) * | 1971-02-19 | 1972-11-10 | Pinaud Francois | |
| FR2155660A5 (en) * | 1971-10-07 | 1973-05-18 | Sumitomo Chemical Co | |
| DE2237904A1 (en) * | 1972-08-02 | 1974-03-28 | Basf Ag | PROCESS FOR THE PRODUCTION OF PURE 1-NITROANTHRAQUINONE |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2233076A1 (en) * | 1972-07-06 | 1974-01-24 | Basf Ag | Pure 1-nitroanthraquinones - from mixt of nitroanthraquinones by addn of amine alcoholate or phenate |
| DE2461648A1 (en) * | 1974-12-27 | 1976-07-08 | Bayer Ag | PROCESS FOR THE PRODUCTION OF PURE 1-NITRO-ANTHRAQUINONE |
-
1976
- 1976-12-02 DE DE19762654649 patent/DE2654649C2/en not_active Expired
-
1977
- 1977-11-29 CH CH1460177A patent/CH632735A5/en not_active IP Right Cessation
- 1977-11-29 GB GB4962077A patent/GB1560129A/en not_active Expired
- 1977-12-02 FR FR7736401A patent/FR2372789A1/en active Granted
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE167699C (en) * | ||||
| FR2130801A5 (en) * | 1971-02-19 | 1972-11-10 | Pinaud Francois | |
| FR2155660A5 (en) * | 1971-10-07 | 1973-05-18 | Sumitomo Chemical Co | |
| DE2237904A1 (en) * | 1972-08-02 | 1974-03-28 | Basf Ag | PROCESS FOR THE PRODUCTION OF PURE 1-NITROANTHRAQUINONE |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2654649C2 (en) | 1985-01-31 |
| FR2372789B1 (en) | 1981-04-30 |
| DE2654649A1 (en) | 1978-06-08 |
| CH632735A5 (en) | 1982-10-29 |
| GB1560129A (en) | 1980-01-30 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |