CH198148A - Process for the preparation of a leuco ester of a dye of the anthraquinonazole series. - Google Patents

Process for the preparation of a leuco ester of a dye of the anthraquinonazole series.

Info

Publication number
CH198148A
CH198148A CH198148DA CH198148A CH 198148 A CH198148 A CH 198148A CH 198148D A CH198148D A CH 198148DA CH 198148 A CH198148 A CH 198148A
Authority
CH
Switzerland
Prior art keywords
dye
anthraquinonazole
series
preparation
leuco
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 CH198148A publication Critical patent/CH198148A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Leukoesters    eines     Farbstoffes     der     Anthrachinonazolreihe.       Es wurde gefunden, dass man bei der  Behandlung von     1-Amino-2-anthrachinonyl-          monochlor-2',3'-anthrachinonoxazol    mit einem       veresternd    wirkenden Abkömmling der Schwe  felsäure in Gegenwart von     Pyridin    und  Kupfer     unterhalb   <B>100'C</B> den neuen     I.;euko-          schwefelsäureester    :dieses     Azols    erhält.  



  Der in sehr guter Ausbeute und     Reinheit     erhältliche     Leukoester    besitzt vorzügliche       färberische    Eigenschaften. Er liefert beim       Entwickeln    in der üblichen Weise auf der  Faser echte, blaurote Färbungen oder     Drucke.     <I>Beispiel:

  </I>  Zu 150 Teilen möglichst wasserfreiem       Pyridin    lässt man unter Kühlung 15 Teile  eines Gemisches aus 80 Teilen     Schwefel-          trioxyd    und 20     Teilen        Chlorsulfonsäure    ein  tropfen und trägt .dann 13 Teile     1-Amino-2-          anthracllinonylmonochlor-        2',3'-        antlirachinon-          oxazol    und 13 Teile Kupferpulver ein.

   Man  rührt nun das Gemisch zwei Stunden lang    bei     35'C,    wobei der Farbstoff mit tiefrot  brauner Farbe in Lösung geht, fällt das       Pyridinsalz    des     Leukoesters    durch Eintragen  in Eiswasser aus, trennt die     wässrige    Lösung  ab und löst den Niederschlag in einer       Mischung    von 1000 Teilen Wasser von 60   C  und 28 Teilen     f        iger    Natronlauge.

   Die  Lösung erwärmt man so lange unter vermin  dertem Druck, bis kein     Pyridin    mehr über  geht, filtriert sie und salzt aus der tiefrot  braun gefärbten Lösung durch Zugabe von  Natrium- oder     Kaliumchlorid    das Salz des       Leukoesters    aus. Es bildet einen rotgelben  Niederschlag, den man auf die übliche Weise  abtrennt und in Pasten- oder Pulverform  bringt. Die Ausbeute ist sehr .gut. Man er  hält beim Entwickeln in der üblichen Weise  auf der Faser     echte,    blaurote Färbungen oder  Drucke.



  Process for the preparation of a leuco ester of a dye of the anthraquinonazole series. It has been found that the treatment of 1-amino-2-anthraquinonyl monochloro-2 ', 3'-anthraquinone oxazole with an esterifying derivative of sulfuric acid in the presence of pyridine and copper below <B> 100'C </ B> the new I. eucosulphuric acid ester: this azole contains.



  The leuco ester, which is available in very good yield and purity, has excellent coloring properties. When developed in the usual way, it produces true, bluish-red dyeings or prints on the fiber. <I> example:

  </I> 15 parts of a mixture of 80 parts of sulfur trioxide and 20 parts of chlorosulfonic acid are added dropwise to 150 parts of pyridine, which is as anhydrous as possible, and 13 parts of 1-amino-2-anthracllinonylmonochloro-2 ', 3'- antlirachinon-oxazole and 13 parts copper powder.

   The mixture is then stirred for two hours at 35.degree. C., the dye going into solution with a deep red-brown color, the pyridine salt of the leuco ester precipitates by pouring it into ice water, the aqueous solution is separated off and the precipitate is dissolved in a mixture of 1000 parts 60 ° C water and 28 parts of sodium hydroxide solution.

   The solution is heated under reduced pressure until no more pyridine passes over, it is filtered and the salt of the leuco ester is salted out of the deep red-brown solution by adding sodium or potassium chloride. A red-yellow precipitate forms, which is separated off in the usual way and brought into paste or powder form. The yield is very good. Real, bluish-red dyeings or prints are kept on the fiber in the usual way during development.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung des Leuko- schwefelsäureesters . des 1-Amino-2-anthra- chinonylmonochlor-anthrachinonoxazols, dadurch gekennzeichnet, dass man dieses unterhalb<B>100'</B> C in Gegenwart von Pyridin und Kupfer mit einem veresternd wirkenden Abkömmling der Schwefelsäure behandelt.. Der neue Leukoester liefert beim Ent wickeln in der üblichen Weise auf der Faser echte, blaurote Färbungen oder Drucke. PATENT CLAIM: Process for the production of the leuco-sulfuric acid ester. of 1-amino-2-anthraquinonylmonochloro-anthraquinone oxazole, characterized in that this is treated below <B> 100 '</B> C in the presence of pyridine and copper with an esterifying derivative of sulfuric acid .. The new leuco ester is obtained when developing real, bluish-red dyeings or prints on the fiber in the usual way.
CH198148D 1936-05-23 1937-05-20 Process for the preparation of a leuco ester of a dye of the anthraquinonazole series. CH198148A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE198148X 1936-05-23

Publications (1)

Publication Number Publication Date
CH198148A true CH198148A (en) 1938-06-15

Family

ID=5756802

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198148D CH198148A (en) 1936-05-23 1937-05-20 Process for the preparation of a leuco ester of a dye of the anthraquinonazole series.

Country Status (1)

Country Link
CH (1) CH198148A (en)

Similar Documents

Publication Publication Date Title
CH198148A (en) Process for the preparation of a leuco ester of a dye of the anthraquinonazole series.
DE632083C (en) Process for the production of acidic dyes of the anthraquinone series
DE656380C (en) Process for the preparation of leuco esters of dyes of the anthraquinone series
CH203880A (en) Process for the preparation of a leuco ester of a dye of the anthraquinonazole series.
CH193258A (en) Process for the production of an acidic wool dye.
CH191165A (en) Process for the preparation of a new monoazo dye.
CH220748A (en) Process for the preparation of a new pyrazolone derivative.
CH184016A (en) Process for the production of a new anthraquinone dye.
CH200065A (en) Process for the preparation of an azo dye containing complexed chromium.
CH194657A (en) Process for the preparation of 4-nitro-2-amino-1-oxynaphthalene-7-sulfonic acid.
CH162635A (en) Process for the production of a new chromium-containing dye.
CH187436A (en) Process for the production of a new anthraquinone dye.
CH119895A (en) Process for the production of a new dye.
CH115465A (en) Process for the production of a new azo dye.
CH187123A (en) Process for the production of a new pyrene derivative.
CH184881A (en) Process for the production of a new copper-containing azo dye.
CH177832A (en) Process for the production of a copper-containing dye.
CH172368A (en) Process for the production of a new dye.
CH204712A (en) Process for the preparation of an azo dye containing complexed chromium.
CH223709A (en) Process for the production of a new azo dye.
CH168926A (en) Process for the preparation of a new trisazo dye.
CH193252A (en) Process for the production of an acidic wool dye.
CH93738A (en) Process for the preparation of a chromium compound of a mordant dye.
CH237130A (en) Process for the production of a new azo dye.
CH116731A (en) Process for the production of a new dye.