CH183899A - Process for the preparation of a new dye of the anthraquinone series. - Google Patents

Process for the preparation of a new dye of the anthraquinone series.

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Publication number
CH183899A
CH183899A CH183899DA CH183899A CH 183899 A CH183899 A CH 183899A CH 183899D A CH183899D A CH 183899DA CH 183899 A CH183899 A CH 183899A
Authority
CH
Switzerland
Prior art keywords
preparation
new dye
anthraquinone series
green
blue
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz Chemische Fabri Vormals
Original Assignee
Chem Fab Vormals Sandoz
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
Application filed by Chem Fab Vormals Sandoz filed Critical Chem Fab Vormals Sandoz
Publication of CH183899A publication Critical patent/CH183899A/en

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Description

  

  Verfahren zur Darstellung eines neuen     Farbstoffes    der     Anthrachinonreihe.       Das vorliegende Verfahren betrifft die  Darstellung eines neuen     Farbstoffes    der     An-          thrachinonreihe    und ist dadurch gekennzeich  net, dass man     1-Amino-2-brom-4-anilido-          anthrachinon    in saurer Lösung mit Braun  stein oxydiert und die     erhaltene    Zwischen  verbindung mit     galiumsulfit    erhitzt.  



  <I>Beispiel:</I>  20 Teile     1-Amino-2-brom-4-anilidoanthra-          chinon    werden in 160 Teilen Monohydrat ge-    löst und in üblicher Weise mit 4,5 Teilen       Braunstein    70%     oxydiert.    Das auf diese  Weise erhaltene     Oxydationsprodukt    wird iso  liert und mit 80 Teilen Phenol und 40 Teilen       gesättigter        galiumsulfitlösung    so lange     auf     150<B>'</B>erhitzt, bis alles wasserlöslich geworden  ist.

   Das Phenol wird     nun    abgeblasen und  der     Farbstoff        ausgesalzen.    Er färbt Wolle  in     .grünblauen        Tönen    an und besitzt die  Formel  
EMI0001.0023     
    Der Farbstoff stellt in     trockenem    Zustande  ein dunkelblaues     Pulver    dar, welches in Was  ser mit     grünblauer    und in     konzentrierter     Schwefelsäure mit blauer Farbe löslich ist.



  Process for the preparation of a new dye of the anthraquinone series. The present process relates to the preparation of a new dye of the anthraquinone series and is characterized in that 1-amino-2-bromo-4-anilido-anthraquinone is oxidized in acidic solution with brown stone and the intermediate compound obtained is heated with galium sulfite.



  <I> Example: </I> 20 parts of 1-amino-2-bromo-4-anilidoanthraquinone are dissolved in 160 parts of monohydrate and 70% oxidized in the usual way with 4.5 parts of manganese dioxide. The oxidation product obtained in this way is isolated and heated with 80 parts of phenol and 40 parts of saturated galium sulfite solution to 150 <B> '</B> until everything has become water-soluble.

   The phenol is now blown off and the dye is salted out. It dyes wool in green-blue tones and has the formula
EMI0001.0023
    When dry, the dye is a dark blue powder which is soluble in water with green-blue color and in concentrated sulfuric acid with blue color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-Amino-2-brom- 4-anilidoanthrachinon in saurer Lösung mit Braunstein oxydiert und die erhaltene Zwi- schenverbindung mit galiumsulfit erhitzt. PATENT CLAIM: Process for the preparation of a new dye of the anthraquinone series, characterized in that 1-amino-2-bromo-4-anilidoanthraquinone is oxidized in acidic solution with manganese dioxide and the intermediate compound obtained is heated with galium sulfite. Der neue Farbstoff färbt Wolle in grün- blauen Tönen an und besitzt die Formel EMI0002.0008 Er stellt in trockenem Zustande ein dunkel- blaues Pulver dar, welches in Wasser mit grünblauer und in konzentrierter Schwefel säure mit blauer Farbe löslich ist. The new dye dyes wool in green-blue tones and has the formula EMI0002.0008 When dry it is a dark blue powder, which is soluble in water with a green-blue color and in concentrated sulfuric acid with a blue color.
CH183899D 1934-02-16 1935-02-13 Process for the preparation of a new dye of the anthraquinone series. CH183899A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE183899X 1934-02-16
CH181533T 1935-02-13

Publications (1)

Publication Number Publication Date
CH183899A true CH183899A (en) 1936-04-30

Family

ID=25720551

Family Applications (1)

Application Number Title Priority Date Filing Date
CH183899D CH183899A (en) 1934-02-16 1935-02-13 Process for the preparation of a new dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH183899A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585682A (en) * 1949-12-10 1952-02-12 Gen Aniline & Film Corp Anthraquinone dyestuff for wool

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2585682A (en) * 1949-12-10 1952-02-12 Gen Aniline & Film Corp Anthraquinone dyestuff for wool

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