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CH224550A - 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
CH224550A
CH224550A CH224550DA CH224550A CH 224550 A CH224550 A CH 224550A CH 224550D A CH224550D A CH 224550DA CH 224550 A CH224550 A CH 224550A
Authority
CH
Switzerland
Prior art keywords
preparation
new dye
anthraquinone series
parts
dye
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 CH224550A publication Critical patent/CH224550A/en

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Description

  

  Verfahren zur Darstellung eines neuen Farbstoffes der     Anthrachinonreihe.       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-7-chlor-          anthrachinon    mit Brom behandelt und die er  haltene     bromierte    Verbindung     sulfiert.     



  <I>Beispiel:</I>  14 Teile     1-Amino-2-brom-4-(2',4'-dime-          thyl)-phenylamino-7-chloranthrachinon    (dar  gestellt durch     Dibromierung    von     1-Amino-7-          monochloranthrachinon    und nachfolgende  Kondensation mit     m-Xylidin)    werden     in    150  Teilen     Dichlorbenzol    verrührt und mit 5,2  Teilen Brom, gelöst in 20 Teilen     Dichlor-          benzol,    versetzt. Man lässt     einige    Zeit bei  Raumtemperatur rühren und erwärmt dann  kurze Zeit auf dem Wasserbade.

   Die erhal  tene Base, das     1-Amino-2-brom-4-(2',4'-di-          methyl-6'-brom)-phenylamino-7        -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.

     10 Teile des so erhaltenen Farbstoffes  werden , in 50 Teilen     Schwefelsäuremono-          hydrat    gelöst und mit 15 Teilen     Oleum    28  versetzt. Man rührt bei 40',     bis        eine    Probe  in kaltem Wasser löslich ist. Der erhaltene  Farbstoff wird durch Eingiessen in Salz  lösung abgetrennt. Er besitzt die Formel  
EMI0001.0033     
    und färbt Wolle in blauen Tönen.



  Process for the preparation of a new dye of the anthraquinone 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-7-chloro-anthraquinone treated with bromine and sulfated the brominated compound he obtained.



  <I> Example: </I> 14 parts of 1-amino-2-bromo-4- (2 ', 4'-dimethyl) -phenylamino-7-chloroanthraquinone (made by dibromination of 1-amino-7- monochloranthraquinone and subsequent condensation with m-xylidine) are stirred in 150 parts of dichlorobenzene, and 5.2 parts of bromine, dissolved in 20 parts of dichlorobenzene, are added. 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-7-monochloro-anthraquinone is separated off by blowing off the solvent and filtration dried. 10 parts of the base obtained are heated with 40 parts of phenol and 20 parts of 30% strength aqueous galium sulfite solution in an autoclave at 140 ° for 16 hours. The phenol is then blown off and the dye separated.

     10 parts of the dye thus obtained are dissolved in 50 parts of sulfuric acid monohydrate, and 15 parts of oleum 28 are added. Stir at 40 'until a sample is soluble in cold water. The dye obtained is separated off by pouring it into salt solution. He owns the formula
EMI0001.0033
    and dyes wool in blue tones.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1-Amino-2-brom-4- (2', 4'-dimethyl)-phenylamino- 7 -cbloranthra- chinon mit Brom behandelt und die erhaltene bromierte Verbindung sulfiert. Der neue Farbstoff besitzt die Formel EMI0002.0008 und färbt Wolle in blauen Tönen. 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-7-cbloranthraquinone is treated with bromine and the resulting brominated Sulfated compound. The new dye has the formula EMI0002.0008 and dyes wool in blue tones.
CH224550D 1940-12-13 1940-12-13 Process for the preparation of a new dye of the anthraquinone series. CH224550A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH219415T 1940-12-13
CH224550T 1940-12-13

Publications (1)

Publication Number Publication Date
CH224550A true CH224550A (en) 1942-11-30

Family

ID=25726272

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224550D CH224550A (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) CH224550A (en)

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