GB1551585A - Process for the preparation of chloroanthraquinones - Google Patents

Process for the preparation of chloroanthraquinones

Info

Publication number
GB1551585A
GB1551585A GB4961877A GB4961877A GB1551585A GB 1551585 A GB1551585 A GB 1551585A GB 4961877 A GB4961877 A GB 4961877A GB 4961877 A GB4961877 A GB 4961877A GB 1551585 A GB1551585 A GB 1551585A
Authority
GB
United Kingdom
Prior art keywords
chloroanthraquinones
dyes
reaction
treatment apparatus
gas treatment
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.)
Expired
Application number
GB4961877A
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 GB1551585A publication Critical patent/GB1551585A/en
Expired legal-status Critical Current

Links

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Chloroanthraquinones are obtained by treating a nitroanthraquinone or nitroanthraquinone mixture in the melt at elevated temperatures with elemental chlorine by passing chlorine in a gas treatment apparatus into molten mono- and/or dinitroanthraquinone at a temperature of 160 to 280 DEG C and removing the product chloroanthraquinones from the gas treatment apparatus in molten form. The chloroanthraquinones obtained are generally known, useful starting materials for preparing vat dyes, acid wool dyes by reaction of amines and subsequent sulphonation, and also disperse dyes by reaction with thiophenols or sulphinates.
GB4961877A 1976-12-02 1977-11-29 Process for the preparation of chloroanthraquinones Expired GB1551585A (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 (1)

Publication Number Publication Date
GB1551585A true GB1551585A (en) 1979-08-30

Family

ID=25771210

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4961877A Expired GB1551585A (en) 1976-12-02 1977-11-29 Process for the preparation of chloroanthraquinones

Country Status (4)

Country Link
JP (1) JPS5377049A (en)
CH (1) CH628607A5 (en)
FR (1) FR2372790A1 (en)
GB (1) GB1551585A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543214A (en) * 1983-06-23 1985-09-24 Ciba-Geigy Ag Process for the preparation of bromoanthraquinones

Family Cites Families (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
GB1457220A (en) * 1974-11-02 1976-12-01 Bayer Ag Process for the preparation of halogenoanthraquinones
DE2452014C3 (en) * 1974-11-02 1979-06-21 Bayer Ag, 5090 Leverkusen Process for the preparation of haloanthraquinones
GB1492137A (en) * 1974-12-07 1977-11-16 Bayer Ag Process for concentrating halogenoanthraquinones

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4543214A (en) * 1983-06-23 1985-09-24 Ciba-Geigy Ag Process for the preparation of bromoanthraquinones

Also Published As

Publication number Publication date
CH628607A5 (en) 1982-03-15
FR2372790A1 (en) 1978-06-30
JPS5377049A (en) 1978-07-08
FR2372790B1 (en) 1982-10-29

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee