FR2372790A1 - PROCESS FOR PREPARING CHLOROANTHRAQUINONES - Google Patents

PROCESS FOR PREPARING CHLOROANTHRAQUINONES

Info

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
Application number
FR7736402A
Other languages
French (fr)
Other versions
FR2372790B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bayer AG
Original Assignee
Bayer AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2654650A external-priority patent/DE2654650C3/en
Priority claimed from DE2749416A external-priority patent/DE2749416C2/en
Application filed by Bayer AG filed Critical Bayer AG
Publication of FR2372790A1 publication Critical patent/FR2372790A1/en
Application granted granted Critical
Publication of FR2372790B1 publication Critical patent/FR2372790B1/fr
Granted legal-status Critical Current

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.

FR7736402A 1976-12-02 1977-12-02 PROCESS FOR PREPARING CHLOROANTHRAQUINONES Granted FR2372790A1 (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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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