CH118968A - Process for the production of a new dye. - Google Patents

Process for the production of a new dye.

Info

Publication number
CH118968A
CH118968A CH118968DA CH118968A CH 118968 A CH118968 A CH 118968A CH 118968D A CH118968D A CH 118968DA CH 118968 A CH118968 A CH 118968A
Authority
CH
Switzerland
Prior art keywords
dye
new
oxyazo
formaldehyde
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 CH118968A publication Critical patent/CH118968A/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
    • C09B43/00—Preparation of azo dyes from other azo compounds
    • C09B43/08—Preparation of azo dyes from other azo compounds by reduction
    • 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
    • C09B43/00—Preparation of azo dyes from other azo compounds

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     o-Oxyazo-          farbstoff,    der erhalten wird durch Reduzie  ren des     Kupplungsproduktes    der nitrierten       Diazoverbindung    der     1-Amino-2-oxynaph-          thalin-4-sulfosäure    mit     f8-Naphthol             in des  sen     co-Methansulfosäurederivat    überführt,

    zum Beispiel durch Behandeln mit Formal  dehyd und     Bisulfit    oder     formaldehydschwef-          liger    Säure     bezw.    deren Salzen. Der neue  Farbstoff bildet ein schwarzes Pulver, das  sich in Wasser mit     violettbrauner,    in ver  dünnter Natronlauge mit schwärzlich     vio-          lettbrauner    und in     Sololösung    mit grünlich  blauer Farbe löst. Im Gegensatz zum Aus  gangsfarbstoff ist das neue Produkt schon  in kaltem Wasser löslich und bleibt auch  nach     -Versetzen    seiner Lösungen     xnit    Mine  ralsäure gelöst.  



       Beispiel     450 Teile des     o-Oxyazofarbstoffes,    der  erhalten wird durch Reduzieren des Kupp  lungsproduktes der nitrierten Diazoverbin-    Jung der     1-Amino-2-oxynaphthalin-4-sulfo-          säure    mit     ss-Naphthol,    zweckmässig in Form  des frisch hergestellten Reduktionsansatzes,  werden mittelst 45 Teilen     Ätznatron    in  zirka 8000 Teilen Wasser bei<B>50'</B> gelöst,  worauf man eine Mischung von 100 Teilen  35     %iges    Formaldehyd und 28,5 Teilen  40     %iger        Natriumbisulfitlauge    beifügt.

   Man  rührt einige Zeit und versetzt hierauf mit  so viel 10     %iger    Essigsäure, bis die intensiv  blaue Farbe der Lösung nach violett umge  schlagen ist, salzt aus und filtriert.



      Process for the production of a new dye. It has been found that a new dye is obtained if the o-oxyazo dye, which is obtained by reducing the coupling product of the nitrated diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid with f8-naphthol in the sen co-methanesulfonic acid derivative transferred,

    for example, by treatment with formaldehyde and bisulfite or formaldehyde-sulphurous acid respectively. their salts. The new dye forms a black powder that dissolves in water with a violet-brown color, in diluted sodium hydroxide solution with a blackish violet-brown color, and in a solo solution with a greenish-blue color. In contrast to the starting dye, the new product is already soluble in cold water and remains dissolved even after its solutions have been mixed with mineral acid.



       Example 450 parts of the o-oxyazo dye, which is obtained by reducing the coupling product of the nitrated Diazoverbin- Jung of 1-amino-2-oxynaphthalene-4-sulfonic acid with β-naphthol, expediently in the form of the freshly prepared reduction mixture, are averaged 45 parts of caustic soda are dissolved in about 8000 parts of water at <B> 50 '</B>, whereupon a mixture of 100 parts of 35% formaldehyde and 28.5 parts of 40% sodium bisulphite liquor is added.

   The mixture is stirred for some time and then mixed with 10% acetic acid until the intense blue color of the solution has turned violet, salted out and filtered.

Claims (1)

PATNNTANSPRUG'H: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man den o-Oxyazofarbstoff, der erhalten wird durch Reduzieren des Kupplungspro duktes der nitrierten Diazoverbindung der 1-Amino-2-ogynaphthalin-4-sulfosäure mit ss Naphthol, Formaldehyd und Bisulfit auf einander einwirken -lässt. PATNNTANSPRUG'H: Process for the preparation of a new dye, characterized in that the o-oxyazo dye, which is obtained by reducing the coupling product of the nitrated diazo compound of 1-amino-2-ogynaphthalene-4-sulfonic acid with ss naphthol, formaldehyde and Bisulfite to act on each other. Der neue Farbstoff bildet ein schwarzes Pulver, das sich in Wasser mit violettbrauner, in verdünnter Natronlauge mit schwärzlich violettbrauner und in Sodalösung mit grünlichblauer Farbe löst. The new dye forms a black powder that dissolves in water with violet-brown, in dilute sodium hydroxide solution with blackish violet-brown and in soda solution with greenish-blue color. Im Gegensatz zum Ausgangsfarbstoff ist das neue Produkt schon in kaltem Was ser löslieli und bleibt auch nnicli Versetzen :einer Losungen mit Mineralsäure gelöst. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man den reduzierten o-Oxyazofarbstoff mit Formaldehydbisulfit behandelt. In contrast to the original dye, the new product is already soluble in cold water and remains even in the form of a solution with mineral acid. SUBCLAIM: Process according to claim, characterized in that the reduced o-oxyazo dye is treated with formaldehyde bisulphite.
CH118968D 1927-02-16 1925-09-24 Process for the production of a new dye. CH118968A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH118968T 1927-02-16

Publications (1)

Publication Number Publication Date
CH118968A true CH118968A (en) 1927-02-16

Family

ID=4377942

Family Applications (1)

Application Number Title Priority Date Filing Date
CH118968D CH118968A (en) 1927-02-16 1925-09-24 Process for the production of a new dye.

Country Status (1)

Country Link
CH (1) CH118968A (en)

Similar Documents

Publication Publication Date Title
CH121717A (en) Process for the production of a new dye.
DE468483C (en) Process for the preparation of o-oxyazo dyes
CH210999A (en) Process for the preparation of a new water-soluble disazo dye.
CH147695A (en) Process for the production of a new metal-containing dye.
CH187603A (en) Process for the preparation of a chromable yellow azo dye.
CH122931A (en) Process for the preparation of a new dye.
CH119124A (en) Process for the production of a new dye.
CH117270A (en) Process for the production of a new dye.
CH210732A (en) Process for the preparation of a new water-soluble disazo dye.
CH103137A (en) Process for the preparation of a disazo dye.
CH195532A (en) Process for the preparation of a pentakisazo dye.
CH119372A (en) Process for the production of a new dye.
CH129482A (en) Process for the production of a new azo dye.
CH121482A (en) Process for the production of a new dye.
CH119123A (en) Process for the production of a new dye.
CH157947A (en) Process for the preparation of an azo dye.
CH167806A (en) Process for the preparation of an azo dye.
CH119379A (en) Process for the production of a new dye.
CH122910A (en) Process for the preparation of a developer dye.
CH138601A (en) Process for the preparation of an azo dye.
CH170768A (en) Process for the preparation of a substantive copper-containing azo dye.
CH203950A (en) Process for the preparation of an azo dye.
CH204444A (en) Process for the production of a new azo dye.
CH133108A (en) Process for the production of a new dye.
CH195533A (en) Process for the preparation of a pentakisazo dye.