FR2372790A1 - PROCESS FOR PREPARING CHLOROANTHRAQUINONES - Google Patents
PROCESS FOR PREPARING CHLOROANTHRAQUINONESInfo
- Publication number
- FR2372790A1 FR2372790A1 FR7736402A FR7736402A FR2372790A1 FR 2372790 A1 FR2372790 A1 FR 2372790A1 FR 7736402 A FR7736402 A FR 7736402A FR 7736402 A FR7736402 A FR 7736402A FR 2372790 A1 FR2372790 A1 FR 2372790A1
- Authority
- FR
- France
- Prior art keywords
- chloroanthraquinones
- preparing
- chlorine
- molten
- temperature
- 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
Abstract
L'invention concerne un procédé de préparation de chloroanthraquinones par traitement d'une nitroanthraquinone ou d'un mélange de nitroanthraquinones à l'état fondu, à haute température, par le chlore élémentaire. On envoie du chlore dans un appareillage permettant l'introduction d'un gaz, dans les mono- et/ou dinitroanthraquinones fondues, à une température d'environ 160 à 280 degrés C.The invention relates to a process for preparing chloroanthraquinones by treating a nitroanthraquinone or a mixture of nitroanthraquinones in the molten state, at high temperature, with elemental chlorine. Chlorine is sent to an apparatus allowing the introduction of a gas, in the molten mono- and / or dinitroanthraquinones, at a temperature of about 160 to 280 degrees C.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2654650A DE2654650C3 (en) | 1976-12-02 | 1976-12-02 | Process for the continuous production of chloranthraquinones |
DE2749416A DE2749416C2 (en) | 1977-11-04 | 1977-11-04 | Process for the production of chloranthraquinones |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2372790A1 true FR2372790A1 (en) | 1978-06-30 |
FR2372790B1 FR2372790B1 (en) | 1982-10-29 |
Family
ID=25771210
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7736402A Granted FR2372790A1 (en) | 1976-12-02 | 1977-12-02 | PROCESS FOR PREPARING CHLOROANTHRAQUINONES |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS5377049A (en) |
CH (1) | CH628607A5 (en) |
FR (1) | FR2372790A1 (en) |
GB (1) | GB1551585A (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CH653666A5 (en) * | 1983-06-23 | 1986-01-15 | Ciba Geigy Ag | METHOD FOR PRODUCING BROMANTHRACHINON. |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1969044A (en) * | 1931-04-14 | 1934-08-07 | Ici Ltd | Dyestuff of the anthraquinone series and process of preparing the same |
DE2452014A1 (en) * | 1974-11-02 | 1976-05-13 | Bayer Ag | Chloro- or bromo-anthraquinone prepn - by halogen reaction with melt of nitro-anthraquinone and halo-anthraquinone diluent |
FR2289479A1 (en) * | 1974-11-02 | 1976-05-28 | Bayer Ag | PROCESS FOR MANUFACTURING HALO-ANTHRAQUINONES |
FR2293412A1 (en) * | 1974-12-07 | 1976-07-02 | Bayer Ag | PROCESS FOR THE ENRICHMENT OF HALOANTHRAQUINONES |
-
1977
- 1977-11-29 CH CH1460277A patent/CH628607A5/en not_active IP Right Cessation
- 1977-11-29 GB GB4961877A patent/GB1551585A/en not_active Expired
- 1977-12-01 JP JP14336677A patent/JPS5377049A/en active Pending
- 1977-12-02 FR FR7736402A patent/FR2372790A1/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1969044A (en) * | 1931-04-14 | 1934-08-07 | Ici Ltd | Dyestuff of the anthraquinone series and process of preparing the same |
DE2452014A1 (en) * | 1974-11-02 | 1976-05-13 | Bayer Ag | Chloro- or bromo-anthraquinone prepn - by halogen reaction with melt of nitro-anthraquinone and halo-anthraquinone diluent |
FR2289479A1 (en) * | 1974-11-02 | 1976-05-28 | Bayer Ag | PROCESS FOR MANUFACTURING HALO-ANTHRAQUINONES |
FR2293412A1 (en) * | 1974-12-07 | 1976-07-02 | Bayer Ag | PROCESS FOR THE ENRICHMENT OF HALOANTHRAQUINONES |
Also Published As
Publication number | Publication date |
---|---|
GB1551585A (en) | 1979-08-30 |
JPS5377049A (en) | 1978-07-08 |
CH628607A5 (en) | 1982-03-15 |
FR2372790B1 (en) | 1982-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |