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CH142057A - Process for the preparation of a dye of the anthraquinone series. - Google Patents

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

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Publication number
CH142057A
CH142057A CH142057DA CH142057A CH 142057 A CH142057 A CH 142057A CH 142057D A CH142057D A CH 142057DA CH 142057 A CH142057 A CH 142057A
Authority
CH
Switzerland
Prior art keywords
leuco
dye
trioxyanthraquinone
preparation
blue
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie 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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH142057A publication Critical patent/CH142057A/en

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Description

  

  Verfahren zur Darstellung eines     Farbstoffes    der     Anthrachinonreihe.       Im Hauptpatent Nr. 136051 ist ein Ver  fahren zur Darstellung eines Farbstoffes der       Anthrachinonreihe    beschrieben, das dadurch  gekennzeichnet ist, dass man     Leuko-1.4.5.8-          Tetraoxyanthrachinon    mit     Oxäthylamin    be  handelt und den erhaltenen     Leukokörper     oxydiert.  



  Gegenstand vorliegender Erfindung ist  nun ein Verfahren zur Darstellung eines  weiteren Farbstoffes der     Anthrachinon-          reihe,    dadurch gekennzeichnet, dass man       Leuko-1.4.5-Trioxyanthrachinon    mit     Ox-          äthylamin    behandelt und den erhaltenen       Leukokörper    oxydiert.  



  Das     Leuko    - 1 .4.     .5-Trioxyanthrachinon     wird zweckmässig durch Reduktion von       1.4.5-Trioxyanthrachinon    im Reaktions  gefäss selbst erzeugt.  



  Der neue Farbstoff, das 1 .     4-Dioxyäthyl-          diamino-5-oxyanthrachinon,    bildet blaue Kri  stalle, die in Schwefelsäure oliv-gelb löslich       sind,    welche Färbung nach Zusatz von Form-         aldehyd    nach     blaugrün    umschlägt. Er färbt       Acetatseide    klar blau an und kann auch zur  Herstellung anderer Farbstoffe     Verwendung     finden.

      <I>Beispiel:</I>  Je 10 Gewichtsteile     1.4.5-Trioxy-au-          thrachinon    und     Hydrosulfit    werden bei     ge-          \?##öhnlicher    Temperatur in 100 Gewichts  teilen einer     290%igen        Oxäthylaminlösung     eingetragen. Man rührt so lange bei Zimmer  temperatur, bis sich aus der vorübergehend  eingetretenen Lösung ein Kristallbrei abge  schieden hat; alsdann steigert man die Tem  peratur sehr langsam auf 80   und rührt so  lange, bis eine Probe unter dem Mikroskop  aus einheitlichen, braungelben Prismen be  steht.

   Durch Oxydation der isolierten     Leuko-          v        erbindung    gelangt man zu dem 1.     4-Diox-          äthyl-diamino-5-oxy-anthrachinon.        Azetat-          seide    wird in blauen Tönen angefärbt. Durch  Verestern mit Schwefelsäure bekommt man      einen sehr klaren, blauen, sauren     Wollfarb-          stoff.  



  Process for the preparation of a dye of the anthraquinone series. In the main patent no. 136051 a process is described for the preparation of a dye of the anthraquinone series, which is characterized in that leuco-1.4.5.8-tetraoxyanthraquinone is treated with oxethylamine and the leuco body obtained is oxidized.



  The present invention now relates to a process for the preparation of a further dye of the anthraquinone series, characterized in that leuco-1,4,5-trioxyanthraquinone is treated with oxyethylamine and the leuco body obtained is oxidized.



  The Leuko - 1 .4. .5-Trioxyanthraquinone is expediently produced by reducing 1.4.5-trioxyanthraquinone in the reaction vessel itself.



  The new dye that 1. 4-Dioxyethyl-diamino-5-oxyanthraquinone, forms blue crystals which are olive-yellow soluble in sulfuric acid, which color changes to blue-green after addition of formaldehyde. It stains acetate silk in a clear blue and can also be used to produce other dyes.

      <I> Example: </I> 10 parts by weight of 1.4.5-trioxy-authrachinone and hydrosulfite are added at normal temperature in 100 parts by weight of a 290% strength oxyethylamine solution. The mixture is stirred at room temperature until a slurry of crystals has separated out from the temporary solution; then the temperature is raised very slowly to 80 and stirred until a sample under the microscope consists of uniform, brown-yellow prisms.

   Oxidation of the isolated leuco compound leads to 1,4-dioxethyl-diamino-5-oxy-anthraquinone. Acetate silk is dyed in blue tones. Esterification with sulfuric acid gives a very clear, blue, acidic wool dye.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines neuen Farbstoffes der Anthrachinonreihe, dadurch gekennzeichnet, dass man Leuko-1. 4. 5-Tri- oxyanthrachinon mit Oxäthylamin behandelt und die erhaltene Leukoverbindung oxydiert. Der neue Farbstoff, das 1.4-Dioxy- äthyldiamiuo-5-oxyanthrachinon, bildet blaue Kristalle, die sich in Schwefelsäure oliv-gelb lösen, welche Färbung nach Zusatz von Form aldehyd nach blaugrün umschlägt. PATENT CLAIM: Process for the preparation of a new dye of the anthraquinone series, characterized in that leuco-1. 4. Treated 5-trioxyanthraquinone with oxethylamine and oxidized the leuco compound obtained. The new dye, 1,4-dioxyethyldiamiuo-5-oxyanthraquinone, forms blue crystals which dissolve olive-yellow in sulfuric acid, which color changes to blue-green after the addition of formaldehyde. Er färbt Acetatseide klar blau an und kann auch zur Herstellung anderer Farbstoffe Verwendung finden. UNTERANSPRUCH Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Leuko-1 .3 .4- Trioxyanthrachinon ein. solches verwendet, das durch Reduktion von 1.3.4-Trioxy- anthrachinon 'im Reaktionsgefäss selbst er zeugt wurde. It stains acetate silk in a clear blue and can also be used to produce other dyes. SUBSTITUTE SHEET Method according to patent claim, characterized in that a leuco-1 .3 .4-trioxyanthraquinone is used. used that was generated by reducing 1.3.4-trioxyanthraquinone 'in the reaction vessel itself.
CH142057D 1927-05-02 1928-04-24 Process for the preparation of a dye of the anthraquinone series. CH142057A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE142057X 1927-05-02
CH136051T 1928-04-24

Publications (1)

Publication Number Publication Date
CH142057A true CH142057A (en) 1930-08-31

Family

ID=25712638

Family Applications (1)

Application Number Title Priority Date Filing Date
CH142057D CH142057A (en) 1927-05-02 1928-04-24 Process for the preparation of a dye of the anthraquinone series.

Country Status (1)

Country Link
CH (1) CH142057A (en)

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