CH224548A - 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
CH224548A
CH224548A CH224548DA CH224548A CH 224548 A CH224548 A CH 224548A CH 224548D A CH224548D A CH 224548DA CH 224548 A CH224548 A CH 224548A
Authority
CH
Switzerland
Prior art keywords
preparation
anthraquinone series
new dye
dye
bromine
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 CH224548A publication Critical patent/CH224548A/en

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  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines neuen     Farbstoffes    der     Anthrachinonreihe.       Das vorliegende Patent betrifft die Dar  stellung eines neuen Farbstoffes der     Anthra-          chinonreihe    und ist dadurch gekennzeichnet,  dass man 1,4 -     Di    -     (2',4'-        dimethyl)    -     phenyl-          amino-6,7-dichloranthrachinon    mit Brom be  handelt und die erhaltene     bromierte    Verbin  dung     sulfiert.     



  <I>Beispiel:</I>  10 Teile     1,4-Di-(2',4'-dimethyl)-phenyl-          amino-6,7-dichloranthrachinon    (erhalten z. B.  durch Kondensation von     6,7-Dichlorchinizarin          bezw.        Leukoverbindung    mit     Metagylidin)     werden in 200 Teilen Chlorbenzol verrührt.  Hierauf lässt man 6,5 Teile Brom gelöst in  20 Teilen Chlorbenzol langsam zufliessen. Es  wird     einige    Zeit bei Raumtemperatur gerührt  und hierauf so lange auf 30 bis 120   er  wärmt, bis die     Bromierung    beendet ist. Das  Chlorbenzol wird nun mit Wasserdampf ab  geblasen und die     Bromverbindung    durch Fil  tration abgetrennt.

   Die so erhaltene     Farb-          base,    das 1,4-Di-(2'-4'-dimethyl-6'-brom)-         phenylamino    -     6,7-di    -     chloranthrachinon    löst  sich in organischen Lösungsmitteln mit  blauer Farbe.  



  5 Teile der getrockneten Base werden in  15 Teilen     Schwefelsäuremonohydrat    gelöst,  mit 10 Teilen     Oleum    28 % versetzt und so  lange gerührt, bis     eine    Probe in Wasser klar  löslich ist. Der Farbstoff wird auf übliche  Weise, z. B.     Eingiessen    in Salzlösung, abge  trennt und getrocknet.  



  Der Farbstoff besitzt die Formel  
EMI0001.0030     
      und färbt Wolle in schönen blauen Tönen  von vorzüglichen     Echtheiten    und sehr guter  Abendfarbe.



  Process for the preparation of a new dye of the anthraquinone series. The present patent relates to the presentation of a new dye of the anthraquinone series and is characterized in that 1,4 - di - (2 ', 4'-dimethyl) - phenylamino-6,7-dichloroanthraquinone be treated with bromine and the brominated compound obtained is sulfated.



  <I> Example: </I> 10 parts of 1,4-di- (2 ', 4'-dimethyl) -phenyl-amino-6,7-dichloroanthraquinone (obtained e.g. by condensation of 6,7-dichloroquinizarin or leuco compound with metagylidine) are stirred in 200 parts of chlorobenzene. 6.5 parts of bromine, dissolved in 20 parts of chlorobenzene, are then allowed to flow in slowly. It is stirred for some time at room temperature and then heated to 30 to 120 until the bromination has ended. The chlorobenzene is then blown off with steam and the bromine compound is separated off by filtration.

   The color base obtained in this way, 1,4-di- (2'-4'-dimethyl-6'-bromo) -phenylamino-6,7-di-chloranthraquinone, dissolves in organic solvents with a blue color.



  5 parts of the dried base are dissolved in 15 parts of sulfuric acid monohydrate, 10 parts of 28% oleum are added and the mixture is stirred until a sample is clearly soluble in water. The dye is applied in a conventional manner, e.g. B. Pouring into saline, separated abge and dried.



  The dye has the formula
EMI0001.0030
      and dyes wool in beautiful blue tones with excellent fastness properties and very good evening color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man 1,4-Di-(2'-4'-dime- thyl)-phenylamino - 6,7 - dichloranthrachinon mit Brom behandelt und die erhaltene bro- mierte Verbindung sulfiert. Der Farbstoff besitzt die Formel EMI0002.0010 und färbt Wolle in schönen blauen Tönen von vorzüglichen Echtheiten und sehr guter Abendfarbe. PATENT CLAIM: Process for the preparation of a new dye of the anthraquinone series, characterized in that 1,4-di- (2'-4'-dimethyl) phenylamino-6,7-dichloroanthraquinone is treated with bromine and the obtained bromine is bromized Sulfated compound. The dye has the formula EMI0002.0010 and dyes wool in beautiful blue tones with excellent fastness properties and very good evening color.
CH224548D 1940-12-13 1940-12-13 Process for the preparation of a new dye of the anthraquinone series. CH224548A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH219415T 1940-12-13
CH224548T 1940-12-13

Publications (1)

Publication Number Publication Date
CH224548A true CH224548A (en) 1942-11-30

Family

ID=25726270

Family Applications (1)

Application Number Title Priority Date Filing Date
CH224548D CH224548A (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) CH224548A (en)

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