CH119886A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH119886A
CH119886A CH119886DA CH119886A CH 119886 A CH119886 A CH 119886A CH 119886D A CH119886D A CH 119886DA CH 119886 A CH119886 A CH 119886A
Authority
CH
Switzerland
Prior art keywords
black
production
new dye
dye
violet
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 CH119886A publication Critical patent/CH119886A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines neuen Farbstoffes.    Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man den     Azofarb-          stoff    aus     diazotierter        6-Nitro-2-aminophenol-          4-sulfosäure    und     g-Naphthol    mit     Chrom-          formiat    behandelt.

   Der neue Farbstoff bil  det ein schwarzes Pulver, löst sich in Was  ser mit     rotviolettschwarzer,    in 10     %iger    Na  tronlauge mit     violettschwacher    Farbe und  färbt Wolle aus schwefelsaurem Bade in       rotstichig    schwarzen Tönen mit vorzüglichen  Echtheitseigenschaften.  



       Beispiel:     41,1 Teile des     Natronsalzes    des Farb  stoffes aus     diazotierter    6 -     Nitro    - 2 -     amino-          phenol-4-sulfosä,ure    und     ss-Naphthol    werden  in 600 Teilen Wasser kochend gelöst. Hier  auf gibt man eine     Chromformiatlösung    ent  sprechend 15,2 Teilen     Cr20:,    hinzu. Das Ge  misch wird längere Zeit     ruiekfliessend    ge-    kocht und hierauf durch Filtration von etwa  vorhandenem Chromschlamm getrennt. Durch       Aussalzen    oder Eindampfen wird der Farb  stoff gewonnen.



  Process for the production of a new dye. It has been found that a new dye is obtained if the azo dye from diazotized 6-nitro-2-aminophenol-4-sulfonic acid and g-naphthol is treated with chromium formate.

   The new dye forms a black powder, dissolves in water with red-violet-black, in 10% sodium hydroxide solution with a weak violet color, and dyes wool from sulfuric acid baths in red-tinged black shades with excellent fastness properties.



       Example: 41.1 parts of the sodium salt of the dye from diazotized 6 - nitro - 2 - aminophenol-4-sulfosä, ure and ß-naphthol are dissolved in 600 parts of boiling water. Here, a chromium formate solution corresponding to 15.2 parts of Cr20: is added. The mixture is boiled for a long time and then separated from any chrome sludge that may be present by filtration. The dye is obtained by salting out or evaporating.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man den Azofarbstoff aus diazotierter 6-Ni- tro-2-aminophenol-4-sulfosäure und ss-Naph- thol mit Chromformiat behandelt. PATENT CLAIM: Process for the production of a new dye, characterized in that the azo dye from diazotized 6-nitro-2-aminophenol-4-sulfonic acid and s-naphthol is treated with chromium formate. Der neue Farbstoff bildet ein schwarzes Pulver, löst sich in Wasser mit rotviolettschwarzer, in 1.0 %iger Natronlauge mit violettschwarzer -Farbe und färbt Wolle aus schwefelsaurem Bade in rotstichig schwarzen Tönen mit vor züglichen Echtheitseigenschaften. The new dye forms a black powder, dissolves in water with red-violet-black, in 1.0% sodium hydroxide solution with violet-black color and dyes wool from sulfuric acid bath in reddish black shades with excellent fastness properties.
CH119886D 1925-02-16 1925-02-16 Process for the production of a new dye. CH119886A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119886T 1925-02-16
CH115111T 1926-06-01

Publications (1)

Publication Number Publication Date
CH119886A true CH119886A (en) 1927-04-16

Family

ID=25708455

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119886D CH119886A (en) 1925-02-16 1925-02-16 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH119886A (en)

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