AT22658B - ) Process for the preparation of a blue dye of the anthracene series. - Google Patents

) Process for the preparation of a blue dye of the anthracene series.

Info

Publication number
AT22658B
AT22658B AT22658DA AT22658B AT 22658 B AT22658 B AT 22658B AT 22658D A AT22658D A AT 22658DA AT 22658 B AT22658 B AT 22658B
Authority
AT
Austria
Prior art keywords
preparation
blue dye
anthracene series
dye
anthracene
Prior art date
Application number
Other languages
German (de)
Original Assignee
Farbenfab Vorm Bayer F & Co
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 DE1903158474D external-priority patent/DE158474C/de
Application filed by Farbenfab Vorm Bayer F & Co filed Critical Farbenfab Vorm Bayer F & Co
Application granted granted Critical
Publication of AT22658B publication Critical patent/AT22658B/en

Links

Landscapes

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

Description

  

   <Desc/Clms Page number 1> 
 



  Verfahren zur Darstellung eines blauen Farbstoffes der Anthracenreihe. 



   Ersetzt man in dem Verfahren der Patentschrift Nr.   22657   das dort verwendete   l-Amido-2-halogenanthrachinon   durch 2-Amido-1-3-dibromanthrachinon, so erhält man unter Eintritt der analogen Reaktion ebenfalls einen blauen Farbstoff vom gleichen Typus wie diejenigen des Stamm-Patentes. 



   Das Verfahren wird durch folgendes   sseispic ! erläutert :     B e i s p i e l. 10 kg 1-3-Dibrom-2-amidoanthrachinon werden mit 200 kg Nitrobenzol,     5 kg entwässertem Natriumacetat und 0#5 kg Kupferchlorid   etwa zwei bis drei Stunden 
 EMI1.1 
 durch folgende   Weichung     versinnhildlicht   : 
 EMI1.2 
 Der so erhaltene Farbstoff zeigt folgende Eigenschaften. Er ist in kochendem Nitrobenzol 
 EMI1.3 
 Chinolin. In Alkohol, Eisessig, Pyridin ist er so gut wie unlöslich. Die Lösung in konzentrierter Schwefelsäure ist olivcbraull, beim   Eingiessen   der Lösung in Wasser fällt der Farbstoff in blauen Flocken aus.

   Durch Behandeln derselben mit alkalischen Reduktionsmitteln erhält man eine Küpe, aus welcher ungebeizte Baumwolle in rein grünlichblauen Nuancen von grosser Echtheit angefärbt wird. 



   Das im Beispiel verwandte 2-Amido-1-3-dibromanthrachinen kann erhalten werden durch   Bromiercn   von ss-Amidoanthrachinon mit etwas mehr als der berechneten Menge   Brom   in indifferenten   Lösungsmitteln oder in wässeriger Suspension. Es bildet gelbomnge     gefärbte   Nadeln vom Schmelzpunkt 239-240 , löst sich in konzentrierter Schwefelsäure 
 EMI1.4 




   <Desc / Clms Page number 1>
 



  Process for the preparation of a blue dye of the anthracene series.



   If the l-amido-2-halogenanthraquinone used there is replaced by 2-amido-1-3-dibromoanthraquinone in the process of patent specification No. 22657, a blue dye of the same type as those of the strain is also obtained when the analogous reaction occurs -Patents.



   The procedure is carried out by the following sseispic! explained: Example. 10 kg of 1-3-dibromo-2-amidoanthraquinone are mixed with 200 kg of nitrobenzene, 5 kg of dehydrated sodium acetate and 0 # 5 kg of copper chloride for about two to three hours
 EMI1.1
 symbolized by the following softening:
 EMI1.2
 The dye thus obtained shows the following properties. It's in boiling nitrobenzene
 EMI1.3
 Quinoline. It is practically insoluble in alcohol, glacial acetic acid and pyridine. The solution in concentrated sulfuric acid is olive-brown; when the solution is poured into water, the dye precipitates in blue flakes.

   By treating the same with alkaline reducing agents, a vat is obtained from which unstained cotton is dyed in pure greenish-blue shades of great fastness.



   The 2-amido-1-3-dibromoanthraquinene used in the example can be obtained by brominating β-amidoanthraquinone with slightly more than the calculated amount of bromine in inert solvents or in aqueous suspension. It forms yellow needles with a melting point of 239-240 and dissolves in concentrated sulfuric acid
 EMI1.4


 

Claims (1)

PATENTANSPRUCH : Verfahren zur Darstellung eines blauen Farbstoffes der Anthracenreihe, dadurch ge- kennzeichnet, dass das in dem Verfahren der Stamm-Patentschrift Nr. 22657 angewendete 1-2-Amidohalogenanthrachinon hier durch das 2-Amido-1-3-dibromanthrachinon ersetzt wird. PATENT CLAIM: Process for the preparation of a blue dye of the anthracene series, characterized in that the 1-2-amidohalogenanthraquinone used in the process of the parent patent specification No. 22657 is replaced here by the 2-amido-1-3-dibromoanthraquinone.
AT22658D 1903-11-14 1905-01-16 ) Process for the preparation of a blue dye of the anthracene series. AT22658B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1903158474D DE158474C (en) 1903-11-14

Publications (1)

Publication Number Publication Date
AT22658B true AT22658B (en) 1906-01-10

Family

ID=5679625

Family Applications (1)

Application Number Title Priority Date Filing Date
AT22658D AT22658B (en) 1903-11-14 1905-01-16 ) Process for the preparation of a blue dye of the anthracene series.

Country Status (1)

Country Link
AT (1) AT22658B (en)

Similar Documents

Publication Publication Date Title
AT22658B (en) ) Process for the preparation of a blue dye of the anthracene series.
DE158474C (en)
AT33317B (en) Process for the preparation of mono- and dibromo derivatives of indigo.
AT33279B (en) Process for the preparation of bromine derivatives of β-naphthylindigo.
DE611338C (en) Process for the production of halogen-containing Kuepen dyes
DE1006557C2 (en) Process for the production of anthraquinone dyes
DE622173C (en) Process for the production of Kuepen dyes
AT39142B (en) Process for the preparation of vat dyes of the anthracene series.
DE517441C (en) Process for the preparation of Kuepen dyes of the anthraquinone series
DE544360C (en) Process for the preparation of perylenetetracarboxylic acid
AT119495B (en) Process for the preparation of perylenetetracarboxylic anhydride.
DE619080C (en) Process for the preparation of Kuepen dyes of the antraquinone acridone series
AT96687B (en) Process for the preparation of vat dyes of the anthracene series.
DE935988C (en) Process for the production of Kuepen dyes
AT39139B (en) Process for the preparation of monobromo trichloroindigo.
AT88391B (en) Process for the preparation of vat dyes.
AT38658B (en) Process for the preparation of halogen-containing vat dyes of the thioindigo series.
DE413941C (en) Process for the preparation of Kuepen dyes
DE406041C (en) Process for the preparation of Kuepen dyes
DE636223C (en) Process for the production of nitrogen-containing condensation products
DE821386C (en) Process for the production of Kuepen dyes
DE272296C (en)
AT38255B (en) Process for the preparation of halogen-containing vat dyes of the thioindigo series.
AT35656B (en) Process for the preparation of halogen-containing vat dyes of the thioindigo series.
DE890104C (en) Process for the production of dyes