FR2367733A1 - ANTHRAQUINONE MONONITRATION PROCESS - Google Patents
ANTHRAQUINONE MONONITRATION PROCESSInfo
- Publication number
- FR2367733A1 FR2367733A1 FR7731061A FR7731061A FR2367733A1 FR 2367733 A1 FR2367733 A1 FR 2367733A1 FR 7731061 A FR7731061 A FR 7731061A FR 7731061 A FR7731061 A FR 7731061A FR 2367733 A1 FR2367733 A1 FR 2367733A1
- Authority
- FR
- France
- Prior art keywords
- anthraquinone
- sulfuric acid
- weight ratio
- mononitration
- nitric acid
- 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
La présente invention concerne un procédé de préparation de 1-nitroanthraquinone, avec un rendement élevé, par mononitration de l'anthraquinone par des mélanges acide nitrique/ acide sulfurique. On nitre de l'anthraquinone par un mélange acide nitrique/acide sulfurique, pour lequel le rapport en poids de l'acide nitrique par rapport à l'acide sulfurique est d'environ 1 : 1 jusqu'à environ 2 : 1, pour lequel le rapport en poids de l'acide sulfurique par rapport à l'anthraquinone est d'environ 0,5 : 1 jusqu'à environ 1 : 1 et pour lequel le rapport en poids de l'acide sulfurique par rapport à l'eau est d'environ 2,5 : 1 jusqu'à environ 5,5 : 1, en rapportant ces rapports en poids à la somme des produits introduits, à des températures comprises entre 45 et 70 degrés C, jusqu'à ce que la teneur en anthraquinone par rapport à la somme des composés de l'anthraquinone soit inférieure à 3 % en poids. La 1-nitroanthraquinone est un produit intermédiaire industriel important qui peut, par exemple, être utilisé pour la préparation de 1-aminoanthraquinone, à partir de laquelle on prépare de nombreux colorants du type anthraquinone.The present invention relates to a process for the preparation of 1-nitroanthraquinone, with a high yield, by mononitration of anthraquinone with nitric acid / sulfuric acid mixtures. Anthraquinone is nitrated with a nitric acid / sulfuric acid mixture, for which the weight ratio of nitric acid relative to sulfuric acid is from about 1: 1 to about 2: 1, for which the weight ratio of sulfuric acid to anthraquinone is about 0.5: 1 up to about 1: 1 and for which the weight ratio of sulfuric acid to water is from about 2.5: 1 to about 5.5: 1, taking these weight ratios to the sum of the products introduced, at temperatures between 45 and 70 degrees C, until the content of anthraquinone relative to the sum of the anthraquinone compounds is less than 3% by weight. 1-Nitroanthraquinone is an important industrial intermediate which can, for example, be used for the preparation of 1-aminoanthraquinone, from which many anthraquinone-type dyes are prepared.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19762646649 DE2646649C3 (en) | 1976-10-15 | 1976-10-15 | Process for the mononitration of anthraquinone |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2367733A1 true FR2367733A1 (en) | 1978-05-12 |
FR2367733B1 FR2367733B1 (en) | 1981-05-08 |
Family
ID=5990573
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7731061A Granted FR2367733A1 (en) | 1976-10-15 | 1977-10-14 | ANTHRAQUINONE MONONITRATION PROCESS |
Country Status (10)
Country | Link |
---|---|
JP (1) | JPS5350151A (en) |
AT (1) | AT350543B (en) |
BE (1) | BE859719A (en) |
BR (1) | BR7706874A (en) |
CA (1) | CA1106368A (en) |
CH (1) | CH633770A5 (en) |
DE (1) | DE2646649C3 (en) |
FR (1) | FR2367733A1 (en) |
GB (1) | GB1553333A (en) |
IN (1) | IN146815B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104030927B (en) * | 2014-06-18 | 2016-06-22 | 江苏亚邦染料股份有限公司 | A kind of method with metal modified molecular screen for catalyst preparing 1-nitroanthraquinone |
CN114149326A (en) * | 2021-12-14 | 2022-03-08 | 江苏亚邦染料股份有限公司 | Method for preparing 1-nitroanthraquinone by using supergravity nitration reactor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2155660A5 (en) * | 1971-10-07 | 1973-05-18 | Sumitomo Chemical Co | |
FR2240207A1 (en) * | 1973-08-10 | 1975-03-07 | Ciba Geigy Ag | Pure 1-nitroanthraquinone (derivs) prodn - by nitrating anthraquinone (derivs) in hydrofluoric acid, for use in dye mfr |
-
1976
- 1976-10-15 DE DE19762646649 patent/DE2646649C3/en not_active Expired
-
1977
- 1977-09-15 IN IN238/DEL/77A patent/IN146815B/en unknown
- 1977-10-10 GB GB4208177A patent/GB1553333A/en not_active Expired
- 1977-10-11 CH CH1241477A patent/CH633770A5/en not_active IP Right Cessation
- 1977-10-13 JP JP12194177A patent/JPS5350151A/en active Granted
- 1977-10-13 AT AT731877A patent/AT350543B/en not_active IP Right Cessation
- 1977-10-13 CA CA288,662A patent/CA1106368A/en not_active Expired
- 1977-10-14 BR BR7706874A patent/BR7706874A/en unknown
- 1977-10-14 FR FR7731061A patent/FR2367733A1/en active Granted
- 1977-10-14 BE BE2056339A patent/BE859719A/en unknown
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2155660A5 (en) * | 1971-10-07 | 1973-05-18 | Sumitomo Chemical Co | |
FR2240207A1 (en) * | 1973-08-10 | 1975-03-07 | Ciba Geigy Ag | Pure 1-nitroanthraquinone (derivs) prodn - by nitrating anthraquinone (derivs) in hydrofluoric acid, for use in dye mfr |
Also Published As
Publication number | Publication date |
---|---|
DE2646649A1 (en) | 1978-04-20 |
DE2646649C3 (en) | 1982-01-28 |
JPS5350151A (en) | 1978-05-08 |
CH633770A5 (en) | 1982-12-31 |
AT350543B (en) | 1979-06-11 |
FR2367733B1 (en) | 1981-05-08 |
ATA731877A (en) | 1978-11-15 |
JPS622580B2 (en) | 1987-01-20 |
IN146815B (en) | 1979-09-15 |
BR7706874A (en) | 1978-07-18 |
DE2646649B2 (en) | 1981-01-08 |
CA1106368A (en) | 1981-08-04 |
BE859719A (en) | 1978-04-14 |
GB1553333A (en) | 1979-09-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |