CH222152A - 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
CH222152A
CH222152A CH222152DA CH222152A CH 222152 A CH222152 A CH 222152A CH 222152D A CH222152D A CH 222152DA CH 222152 A CH222152 A CH 222152A
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 CH222152A publication Critical patent/CH222152A/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,     da.ss    man ein Gemisch  von     6,7-Dichlorchinizarin    und     Leuko-6,7-di-          chlorchinizarin    mit     -Zesidin    kondensiert und  die erhaltene Base     sulfiert.     



  <I>Beispiel:</I>  10 Teile     6,7-Dichlorchinizarin,    15 Teile       Leuko-6,7-dichlorchinizarin,    75 Teile     DZesi-          din,    25 Teile Eisessig und 7,5 Teile Borsäure  werden vorzugsweise unter     Luftabschlass          bezw.        in        inerter    Atmosphäre so lange bei  90-140   gerührt,     bis    die Kondensation be  endet ist. Die Base     wird    nach bekannten Me  thoden, z.

   B. durch Zusatz von Alkohol,  Alkohol und Wasser oder durch Eingiessen  der Kondensationsmasse in verdünnte Salz  säure isoliert und gegebenenfalls umkristal  lisiert. 10 Teile der getrockneten Base werden  in 45 Teilen     Schwefelsäuremonohydrat    ge-    löst und mit 30 Teilen     Oleum    28/o versetzt.  Es wird so lange auf 35--40' erwärmt, bis  eine Probe     in    kaltem Wasser leicht löslich  ist. Die     Sulfiermasse    wird hierauf auf     ein     Gemisch von Eis     und        Kochsalzlösung    ge  gossen, filtriert     und    mit Kochsalzlösung 10  neutral gewaschen.

   Der so erhaltene Farb  stoff färbt Wolle und Seide     in    grünblauen  Tönen von sehr guter Echtheit an. Er löst  sich in Schwefelsäure mit blauer Farbe und  hat folgende Formel:  
EMI0001.0030     




      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 a mixture of 6,7-dichloroquinizarine and leuco-6,7-dichloroquinizarine is condensed with -zesidine and the obtained Base sulfated.



  <I> Example: </I> 10 parts of 6,7-dichloroquinizarine, 15 parts of leuco-6,7-dichloroquinizarine, 75 parts of Dzesidine, 25 parts of glacial acetic acid and 7.5 parts of boric acid are preferably removed with air. stirred in an inert atmosphere at 90-140 until the condensation has ended. The base is methods according to known Me, for.

   B. isolated by adding alcohol, alcohol and water or by pouring the condensation mass in dilute hydrochloric acid and optionally recrystallized lized. 10 parts of the dried base are dissolved in 45 parts of sulfuric acid monohydrate, and 30 parts of 28% oleum are added. It is heated to 35-40 'until a sample is easily soluble in cold water. The sulphonation mass is then poured onto a mixture of ice and saline solution, filtered and washed neutral with saline solution.

   The dye thus obtained dyes wool and silk in green-blue tones of very good fastness. It dissolves in sulfuric acid with a blue color and has the following formula:
EMI0001.0030


 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man ein Gemisch von 6,7-Dichlorchinizarin und Leuko-6,7-dichlor- chinizarin mit Mesidin kondensiert und die erhaltene Base sulfiert. Der Farbstoff besitzt die Formel: EMI0002.0008 Er färbt Wolle und Seide in grünblauen Tönen von sehr guter Echtheit. Er löst sich in Schwefelsäure mit blauer Farbe. PATENT CLAIM: Process for the preparation of a new dye of the anthraquinone series, characterized in that a mixture of 6,7-dichloroquinizarin and leuco-6,7-dichloroquinizarin is condensed with mesidine and the base obtained is sulfated. The dye has the formula: EMI0002.0008 It dyes wool and silk in green-blue shades of very good fastness. It dissolves in sulfuric acid with a blue color.
CH222152D 1939-12-20 1939-12-20 Process for the preparation of a new dye of the anthraquinone series. CH222152A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH222152T 1939-12-20
CH215662T 1939-12-20

Publications (1)

Publication Number Publication Date
CH222152A true CH222152A (en) 1942-06-30

Family

ID=25725744

Family Applications (1)

Application Number Title Priority Date Filing Date
CH222152D CH222152A (en) 1939-12-20 1939-12-20 Process for the preparation of a new dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH222152A (en)

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