CH176239A - Process for the preparation of an oxazine dye. - Google Patents

Process for the preparation of an oxazine dye.

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Publication number
CH176239A
CH176239A CH176239DA CH176239A CH 176239 A CH176239 A CH 176239A CH 176239D A CH176239D A CH 176239DA CH 176239 A CH176239 A CH 176239A
Authority
CH
Switzerland
Prior art keywords
preparation
oxazine dye
dye
oxazine
dyes
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 CH176239A publication Critical patent/CH176239A/en

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Description

  

      Verfaluen    zur Darstellung eines     Oxazinfarbstoffes.       Es wurde gefunden, dass man zu neuen  Farbstoffen der     Oxazinreihe    dadurch gelangt,  dass man zu ihrem Aufbau     Carbazolderivate     verwendet.  



  Die Herstellung dieser Farbstoffe kann in  üblicher Weise erfolgen,     zum    Beispiel indem       man    die Komponenten in alkoholischer Lö  sung am     Rückflusskühler    kocht.  



  Die neuen Farbstoffe scheiden sich im  allgemeinen in schöner kristallinischer Form  ab. Die mit ihnen hergestellten Färbungen  zeichnen sich durch gute Wasch- und Licht  eelitheit aus.  



  ,Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines     Oxazin-          farbstoffes.    Es ist dadurch gekennzeichnet,  dass man     2-Oxycarbazol    mit     I\Titrosodimethyl-          anilin    kondensiert.  



  <I>Beispiel:</I>  1.0 Gewichtsteile     2-Oxycarbazol    werden  in 80 Gewichtsteilen Alkohol kochend ge  löst, und in die Lösung werden allmählich  <B>11</B> Gewichtsteile salzsaures     Nitro:        )dimethyl-          anilin    eingetragen. Der neue     Farbstoff    fällt    in der Hitze aus und wird nach mehrstün  digem Kochen am     Rückflusskühler    abgesaugt  und mehrmals mit Alkohol nachgewaschen.  Er stellt ein schweres, sandiges, blaues Pul  ver dar, das sich mit Eisessig mit klarer  blauer Farbe löst und vorgebeizte Baumwolle  in klaren blauen Tönen färbt, die sich durch  gute Waschechtheit und hervorragende Licht  echtheit auszeichnen.



      Procedure for the preparation of an oxazine dye. It has been found that new dyes of the oxazine series can be obtained by using carbazole derivatives for their construction.



  These dyes can be prepared in the usual way, for example by boiling the components in an alcoholic solution on a reflux condenser.



  The new dyes generally separate out in a beautiful crystalline form. The dyeings produced with them are distinguished by their good washability and lightness.



  The subject of the present patent is a process for the production of an oxazine dye. It is characterized in that 2-oxycarbazole is condensed with I \ titrosodimethyl aniline.



  <I> Example: </I> 1.0 part by weight of 2-oxycarbazole is dissolved at the boil in 80 parts by weight of alcohol, and <B> 11 </B> parts by weight of hydrochloric acid nitro:) dimethylaniline are gradually added to the solution. The new dye precipitates in the heat and is sucked off after several hours of boiling on the reflux condenser and washed several times with alcohol. It is a heavy, sandy, blue powder that dissolves with glacial acetic acid with a clear blue color and dyes pre-stained cotton in clear blue tones, which are characterized by good washfastness and excellent lightfastness.

Claims (1)

PATENTANSPRUCFI Verfahren zur Herstellung eines Oxazin- farbstoffes, dadurch gekennzeichnet, dass man 2-Oxycarbazol mit Nitrosodimethylanilin kondensiert. Der gebildete Farbstoff stellt ein schweres, sandiges, blaues Pulver dar, ,das sich in Eisessig mit klarer blauer Farbe löst und vorgebeizte Baumwolle in klaren blauen Tönen färbt, die sich durch gute Waschechtheit und hervorragende Lichtecht heit auszeichnen. PATENT APPLICATION Process for the production of an oxazine dye, characterized in that 2-oxycarbazole is condensed with nitrosodimethylaniline. The dye formed is a heavy, sandy, blue powder, which dissolves in glacial acetic acid with a clear blue color and dyes pre-stained cotton in clear blue tones, which are characterized by good washfastness and excellent lightfastness.
CH176239D 1933-02-10 1934-01-30 Process for the preparation of an oxazine dye. CH176239A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176239X 1933-02-10
CH173745T 1934-01-30

Publications (1)

Publication Number Publication Date
CH176239A true CH176239A (en) 1935-03-31

Family

ID=25719420

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176239D CH176239A (en) 1933-02-10 1934-01-30 Process for the preparation of an oxazine dye.

Country Status (1)

Country Link
CH (1) CH176239A (en)

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