CH224549A - 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
CH224549A
CH224549A CH224549DA CH224549A CH 224549 A CH224549 A CH 224549A CH 224549D A CH224549D A CH 224549DA CH 224549 A CH224549 A CH 224549A
Authority
CH
Switzerland
Prior art keywords
preparation
new dye
anthraquinone series
parts
bromo
Prior art date
Application number
Other languages
German (de)
Inventor
Sandoz A G
Original Assignee
Sandoz 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
Application filed by Sandoz Ag filed Critical Sandoz Ag
Publication of CH224549A publication Critical patent/CH224549A/en

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Description

  

  Verfahren zur Darstellung eines neuen     Farbstoffes    der     Anthraehinonreihe.       Das vorliegende Patent betrifft ein Ver  fahren zur Darstellung eines neuen Farb  stoffes der     Anthrachinonreihe    und ist da  durch gekennzeichnet, dass man     1-Amino-2-          brom-4-(2',        4'-dimethyl)-phenylamino-6-chlor-          anthrachinon    mit Brom behandelt     und    die  erhaltene     bromierte        Verbindung        sulfiert.       <I>Beispiel:

  </I>  14 Teile 1 -     Amino    - 2 -     brom-4-        (2',4'-di-          methyl)    -     phenylamino    - 6 -     chloranthrachinon     (dargestellt durch     Dibromierung    von     1-          Amino-6-monochloranthrachinon    und nach  folgende     Kondensation    mit     m-Xylidin)    wer  den in 150     Teilen        Dichlorbenzol    verrührt und    mit 5,2     Teilen    Brom, gelöst in 20     Teilen          Dichlorbenzol,

      versetzt. Man lässt     einige    Zeit  bei Raumtemperatur rühren und erwärmt  dann kurze Zeit auf dem Wasserbade. Die  erhaltene Base, das 1-Amino-2-brom-4-(2',4'       dimethyl-6'-brom)-phenylamino-6-monochlor-          anthrachinon        wird    durch Abblasen des Lö  sungsmittels und     Filtration    abgetrennt     und          getrocknet.     



  10     Teile    der erhaltenen Base werden mit  40     Teilen    Phenol und 20 Teilen 30%iger  Wässeriger     galiumsulfitlösung    16     Stunden     im     Autoklaven    auf 140   erhitzt. Das Phenol  wird sodann abgeblasen und der Farbstoff  abgetrennt. Er besitzt die     Formel     
EMI0001.0041     
      und färbt Wolle in lebhaften blauen Tönen  von guten     Echtheiten.  



  Process for the preparation of a new dye of the anthraehinone series. The present patent relates to a process for the preparation of a new dye of the anthraquinone series and is characterized by the fact that 1-amino-2-bromo-4- (2 ', 4'-dimethyl) phenylamino-6-chloro-anthraquinone treated with bromine and sulfated the brominated compound obtained. <I> example:

  </I> 14 parts of 1 - amino - 2 - bromo-4- (2 ', 4'-dimethyl) - phenylamino - 6 - chloranthraquinone (prepared by dibromination of 1-amino-6-monochloranthraquinone and after the subsequent condensation with m-xylidine) who is stirred in 150 parts of dichlorobenzene and treated with 5.2 parts of bromine dissolved in 20 parts of dichlorobenzene,

      offset. The mixture is left to stir for some time at room temperature and then warmed for a short time on the water bath. The base obtained, the 1-amino-2-bromo-4- (2 ', 4' dimethyl-6'-bromo) -phenylamino-6-monochloro-anthraquinone, is separated off by blowing off the solvent and filtration and dried.



  10 parts of the base obtained are heated to 140 for 16 hours in an autoclave with 40 parts of phenol and 20 parts of 30% strength aqueous galium sulfite solution. The phenol is then blown off and the dye separated. He owns the formula
EMI0001.0041
      and dyes wool in vivid blue tones with good fastness properties.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, daB man 1-Amino-2-brom-4- (2',4'- dimethyl)-phenylamino- 6 -chloranthra- chinon mit Brom behandelt und die erhaltene bromierte Verbindung sulfiert. Der neue Farbstoff besitzt die Formel EMI0002.0011 und färbt Wolle in lebhaften blauen Tönen von guten Echtheiten. Claim: Process for the preparation of a new dye of the anthraquinone series, characterized in that 1-amino-2-bromo-4- (2 ', 4'-dimethyl) -phenylamino-6-chloranthraquinone is used treated with bromine and sulfated the brominated compound obtained. The new dye has the formula EMI0002.0011 and dyes wool in vivid blue tones with good fastness properties.
CH224549D 1940-12-13 1940-12-13 Process for the preparation of a new dye of the anthraquinone series. CH224549A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH224549T 1940-12-13
CH219415T 1940-12-13

Publications (1)

Publication Number Publication Date
CH224549A true CH224549A (en) 1942-11-30

Family

ID=25726271

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224549D CH224549A (en) 1940-12-13 1940-12-13 Process for the preparation of a new dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH224549A (en)

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