CH187430A - Process for the preparation of a new anthraquinone dye. - Google Patents

Process for the preparation of a new anthraquinone dye.

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Publication number
CH187430A
CH187430A CH187430DA CH187430A CH 187430 A CH187430 A CH 187430A CH 187430D A CH187430D A CH 187430DA CH 187430 A CH187430 A CH 187430A
Authority
CH
Switzerland
Prior art keywords
amino
butylanilidoanthraquinone
preparation
dye
sulfite
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH187430A publication Critical patent/CH187430A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines neuen     Anthrachinon-Farbstoffes.       Wir haben gefunden, dass ein neuer     An-          thrachinonfarbstoff,    die 1 -     Amino    - 4 - p - n  butylanilidoanthrachinon-2-sulfonsäure durch  Behandeln des 1-     Amino-2-halogen-4-p-n-          butylanilidoanthracIiinons        mittels    eines lös  lichen     Sulfites    erhalten werden kann.  



  Der Farbstoff löst sich in Wasser mit  einer hellblauen Farbe und in konzentrier  ter Schwefelsäure mit einer schwach bläu  lichgrünen Farbe, die durch Zusatz von  Formaldehyd tiefblau wird. Er färbt Wolle  aus einem neutralen oder schwach sauren  Bade in Gegenwart eines Hilfsfärbemittels,  wie     Natriumcetylsulfat    oder Glaubersalz, in  einem hellblauen Ton von ausgezeichneter       \Vasch-    und     Walkeehtheit.     



  <I>Beispiel:</I>  10 Teile I     -Amino-2-brom-4-p-n-butyl-          anilidoanthrachinon    (erhalten durch Konden  sation von 1 :     3-Dibrom-4-aminoanthrachinon     mit     p-n-Butylanilin)    werden in 240 Teilen    geschmolzenem Phenol gelöst, in einem Auto  klaven mit einer Lösung von 100 Teilen  kristallinischem     Nati-iumsulfit    in 120 Teilen  Wasser gemischt und das Gemisch während  6 Stunden auf<B>170'</B> C erhitzt.

   Das Produkt  wird filtriert, getrocknet und von den     Un-          reinigkeiten    durch     Extrahieren        mit        Benzol          gereinigt.  



  Process for the preparation of a new anthraquinone dye. We have found that a new anthraquinone dye, the 1-amino-4-p-n-butylanilidoanthraquinone-2-sulfonic acid, can be obtained by treating the 1-amino-2-halo-4-p-butylanilidoanthracinone with a soluble sulfite .



  The dye dissolves in water with a light blue color and in concentrated sulfuric acid with a pale bluish-green color that turns deep blue when formaldehyde is added. He dyes wool from a neutral or slightly acidic bath in the presence of an auxiliary dye, such as sodium cetyl sulfate or Glauber's salt, in a light blue shade of excellent bleach and fullness.



  <I> Example: </I> 10 parts of I-amino-2-bromo-4-pn-butyl anilidoanthraquinone (obtained by condensation of 1: 3-dibromo-4-aminoanthraquinone with pn-butylaniline) are in 240 parts dissolved molten phenol, mixed in an autoclave with a solution of 100 parts of crystalline sodium sulfite in 120 parts of water and the mixture was heated to 170 ° C. for 6 hours.

   The product is filtered, dried and cleaned of the impurities by extraction with benzene.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 1-Amino- 4-p-n-butylanilidoanthrachinon-.2-sulf onsäure, dadurch gekennzeichnet, dass. man 1-Amino- 2-halogen-4-p-n-butylanilidoanthrachinon mit einem löslichen Sulfit behandelt. Der Farbstoff löst sich in Wasser mit einer hellblauen Farbe und in konzentrierter Schwefelsäure mit einer schwach bläulich grünen Farbe, die .durch Zusatz von Formal dehyd tiefblau wird. PATENT CLAIM: Process for the preparation of 1-amino-4-p-n-butylanilidoanthraquinone-.2-sulfonic acid, characterized in that 1-amino-2-halogen-4-p-n-butylanilidoanthraquinone is treated with a soluble sulfite. The dye dissolves in water with a light blue color and in concentrated sulfuric acid with a pale bluish green color, which becomes deep blue when formaldehyde is added. Er färbt Wolle aus einem neutralen oder schwach sauren Bade in Gegenwart eines FIilfsfärbemittels, wie Natriumeetylsulfat oder Glaubersalz, in hell blauem Ton von ausgezeichneter Wasch- und Walkeehtheit. UNTERANSPRüCHE 1. Verfahren nach Patentanspruch, dadurch .gekennzeichnet, dass das 1-Amino-2-halo- gen-4-p-n-butylanilidoanthrachinon das 1- Amino-2-brom-4-p-n-butylanüidoanthra- chinon ist. It dyes wool from a neutral or slightly acidic bath in the presence of an auxiliary dye such as sodium ethyl sulfate or Glauber's salt, in a light blue shade of excellent washing and fulling resistance. SUBClaims 1. Method according to claim, characterized in that the 1-amino-2-halo-4-p-n-butylanilidoanthraquinone is 1- amino-2-bromo-4-p-n-butylanuidoanthraquinone. 2. Verfahren. nach Patentanspruch, dadurch gekennzeichnet, dass das lösliche Sulfit Natriumsulfit ist. 2. Procedure. according to claim, characterized in that the soluble sulfite is sodium sulfite.
CH187430D 1934-10-31 1935-10-31 Process for the preparation of a new anthraquinone dye. CH187430A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB187430X 1934-10-31
CH187430T 1935-10-31

Publications (1)

Publication Number Publication Date
CH187430A true CH187430A (en) 1936-11-15

Family

ID=25721536

Family Applications (1)

Application Number Title Priority Date Filing Date
CH187430D CH187430A (en) 1934-10-31 1935-10-31 Process for the preparation of a new anthraquinone dye.

Country Status (1)

Country Link
CH (1) CH187430A (en)

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