CH121485A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH121485A
CH121485A CH121485DA CH121485A CH 121485 A CH121485 A CH 121485A CH 121485D A CH121485D A CH 121485DA CH 121485 A CH121485 A CH 121485A
Authority
CH
Switzerland
Prior art keywords
new dye
production
dye
blackish
new
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH121485A publication Critical patent/CH121485A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B45/00—Complex metal compounds of azo dyes
    • C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
    • C09B45/14—Monoazo compounds
    • C09B45/16—Monoazo compounds containing chromium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Zusatzpatent     züm    Hauptpatent     Nr.   <B>115111.</B>    Verfahren zur     Ifferstellung    eines neuen     Farbstoffes.       Es wurde gefunden,     dass    man einen neuen       Farbstüff    erhält, wenn man den     Azofarbstoff     au-,     diazotiertem        2-Amino-4-nitro-l-phenol     und     1-Naphthol-5-sulfosäure    mit     Chromichro-          mat    behandelt.

   Der neue Farbstoff bildet  ein schwärzliches Pulver, löst sich. in Wasser       und        in        10        %        iger        Natronlauge        mit        schwärzlich-          brauner    Farbe und färbt Wolle aus schwefel  saurem Bade in. braunen Tönen mit guten  Echtheitseigenschaften.

      <I>Beispiel:</I>  41,1 Teile des     Farbstoffes    aus     diazotier-          tem        2-Amiiio-4-nitro-l-phenol    und     1-Naphthol-          5-sulfosäure    werden in<B>1600</B> Teilen Wasser       kochend        gelöst        und        mit        einer   <B>7</B>     %        igen        Chromi-          ehromatpaste,    hergestellt zum Beispiel aus       Natriumbiehromat    und     Natriumthiosulfat,

      de  ren     Gesamtchromgehalt   <B>22,8</B> Teilen     Cr203       entspricht, längere Zeit am     Rückflusskühler     gekocht. Das überschüssige Chromoxyd wird  hierauf filtriert Lind der- Farbstoff durch Ein  dampfen und     Aussalzen    isoliert.



  Additional patent to main patent no. <B> 115111. </B> Process for the creation of a new dye. It has been found that a new dye is obtained if the azo dye au-, diazotized 2-amino-4-nitro-1-phenol and 1-naphthol-5-sulfonic acid are treated with chromic chromate.

   The new dye forms a blackish powder and dissolves. in water and in 10% sodium hydroxide solution with a blackish-brown color and dyes wool from a sulfuric acid bath in brown shades with good fastness properties.

      <I> Example: </I> 41.1 parts of the dye from diazotized 2-amino-4-nitro-1-phenol and 1-naphthol-5-sulfonic acid in 1600 parts of water dissolved at the boil and coated with a <B> 7 </B>% chromium-eromat paste, e.g.

      whose total chromium content corresponds to <B> 22.8 </B> parts of Cr203, boiled for a long time on the reflux condenser. The excess chromium oxide is then filtered and the dye isolated by evaporating and salting out.

Claims (1)

PATENTANSPRUCII: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man den Azofarbstoff aus diazotiertem 2-Amino- 4-nitro-l-phenol und 1-Naphthol-5-sulfosäure mit Chromichromat behandelt. Der neue Farb stoff bildet ein schwärzliches Pulver, löst sich in Wasser und in<B>10</B> 1/o iger Natronlauge mit schwärzlichbrauner Farbe und färbt Wolle aus schwefelsaurem Bade in braunen Tönen mit guten Echtheitseigenschaften. PATENT CLAIM: Process for the production of a new dye, characterized in that the azo dye from diazotized 2-amino-4-nitro-1-phenol and 1-naphthol-5-sulfonic acid is treated with chromium chromate. The new dye forms a blackish powder, dissolves in water and in <B> 10 </B> 1 / o sodium hydroxide solution with a blackish-brown color and dyes wool from sulfuric acid bath in brown shades with good fastness properties.
CH121485D 1926-06-01 1926-07-13 Process for the production of a new dye. CH121485A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH115111T 1926-06-01
CH121485T 1926-07-13

Publications (1)

Publication Number Publication Date
CH121485A true CH121485A (en) 1927-08-01

Family

ID=25708464

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121485D CH121485A (en) 1926-06-01 1926-07-13 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH121485A (en)

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