CH176238A - Process for the preparation of an oxazine dye. - Google Patents

Process for the preparation of an oxazine dye.

Info

Publication number
CH176238A
CH176238A CH176238DA CH176238A CH 176238 A CH176238 A CH 176238A CH 176238D A CH176238D A CH 176238DA CH 176238 A CH176238 A CH 176238A
Authority
CH
Switzerland
Prior art keywords
preparation
dye
oxazine dye
blue
oxazine
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 CH176238A publication Critical patent/CH176238A/en

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  • Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)

Description

  

  Verfahren zur Darstellung eines     Ogazinfarbstoffes.       Es wurde gefunden, dass man zu neuen  Farbstoffen der     Oxazinreihe    dadurch belangt,  dass man zu ihrem Aufbau     Carbazolderivate     verwendet.  



  Die Herstellung dieser Farbstoffe kann  in der üblichen Weise erfolgen, zum Beispiel  indem man die Komponenten in alkoholischer  Lösung 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  echtheit aus.  



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



  <I>Beispiel:</I>  10     Gewichtsteile        2-Oxycarbazol    werden  in 80 Gewichtsteilen Äthylalkohol kochend  gelöst, und in die Lösung werden allmählich  12 Gewichtsteile salzsaures     Nitrosodiäthanol-          anilin        einetragen.    Die     Farbstoffbildung    be-         ginnt    schon nach kurzer     Zeit.    Es wird  8 Stunden am     Rückflusskühler    gekocht. Der  gebildete neue Farbstoff wird nach dem Er  kalten abgesaugt und mit Alkohol ge  waschen.

   Er     stellt    ein schweres, sandiges,  blaues Pulver dar, das sich in Wasser mit  klarer blauer Farbe löst und vorgebeizte  Baumwolle in klaren blauen Tönen färbt, die  sich durch gute Waschechtheit und hervor  ragende Lichtechtheit auszeichnen.



  Process for the preparation of an ogazine dye. It has been found that new dyes of the oxazine series can be prosecuted by using carbazole derivatives for their synthesis.



  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 themselves in a beautiful crystalline form. The dyeings produced with them are distinguished by their good fastness to washing and light.



  The present patent relates to a process for the production of an oxazine dye. It is characterized in that 2-oxycarbazole is condensed with nitrosodiethanol aniline.



  <I> Example: </I> 10 parts by weight of 2-oxycarbazole are dissolved at the boil in 80 parts by weight of ethyl alcohol, and 12 parts by weight of nitrosodiethanol aniline hydrochloric acid are gradually added to the solution. The dye formation begins after a short time. It is boiled for 8 hours on the reflux condenser. The new dye formed is sucked off after the cold and washed ge with alcohol.

   It is a heavy, sandy, blue powder that dissolves in water 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)

PATENTANSPRUCH: Verfahren zur Darstellung eines Oxazin- farbstoffes, dadurch ekennzeichnet, dass man 2-Oxycarbazol mit" Nitrosodiäthanolanilin kondensiert. Der gebildete Farbstoff stellt ein schweres, sandiges, blaues Pulver dar, das sich in Wasser mit klarer, blauer Farbe löst und vorgebeizte Baumwolle in klaren blauen Tönen färbt, die sich durch gute Waschechtheit und hervorragende Lichtecht heit auszeichnen. PATENT CLAIM: Process for the preparation of an oxazine dye, characterized in that 2-oxycarbazole is condensed with nitrosodiethanolaniline. The dye formed is a heavy, sandy, blue powder that dissolves in water with a clear, blue color and pretreated cotton in colors clear blue tones, which are characterized by good washfastness and excellent lightfastness.
CH176238D 1933-02-10 1934-01-30 Process for the preparation of an oxazine dye. CH176238A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE176238X 1933-02-10
CH173745T 1934-01-30

Publications (1)

Publication Number Publication Date
CH176238A true CH176238A (en) 1935-03-31

Family

ID=25719419

Family Applications (1)

Application Number Title Priority Date Filing Date
CH176238D CH176238A (en) 1933-02-10 1934-01-30 Process for the preparation of an oxazine dye.

Country Status (1)

Country Link
CH (1) CH176238A (en)

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