CH98702A - Process for the production of an azo dye particularly suitable for chrome printing on cotton. - Google Patents

Process for the production of an azo dye particularly suitable for chrome printing on cotton.

Info

Publication number
CH98702A
CH98702A CH98702DA CH98702A CH 98702 A CH98702 A CH 98702A CH 98702D A CH98702D A CH 98702DA CH 98702 A CH98702 A CH 98702A
Authority
CH
Switzerland
Prior art keywords
cotton
production
chrome
particularly suitable
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 CH98702A publication Critical patent/CH98702A/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
    • C09B43/085—Preparation of azo dyes from other azo compounds by reduction by reacting nitro azo dyes with amine or amino azo dye with nitro compounds
    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/0014—Monoazo dyes prepared by diazotising and coupling from diazotized aminonaphthalene
    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/10—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group
    • C09B29/12—Monoazo dyes prepared by diazotising and coupling from coupling components containing hydroxy as the only directing group of the benzene series
    • C09B29/14—Hydroxy carboxylic acids
    • 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

  

  Verfahren zur Herstellung eines für den     Chromdruch    auf     Baumwolle    besonders  geeigneten     Azofarbstoües.       Es wurde gefunden, dass man durch Kup  peln der Nitroverbindung der     diazotierten          1-Amino-2-oxynaphtalin-4-sulfosäure    mit     Re-          sorcylsäure    einen     Azofarbstoff    erhält, wel  cher bei dem Chromdruck auf Baumwolle  tiefe,     violettbraune    Töne von sehr guter Sei  fen- und Lichtechtheit erzeugt.  



       Beispiel     Eine auf bekannte Art hergestellte und  sorgfältig neutralisierte Paste, enthaltend  29,4 Teile der nitrierten     Diazoverbindung     der 1-     Amino    - 2 -     oxynaphtalin    - 4 -     sulfosäure     wird unter Rühren in ein Gemisch aus 15,4  Teilen     Resörcylsäure,    7 Teilen Magnesia und  40 Teilen Wasser eingetragen. Nach been  digter Kombination wird der gebildete Farb  stoff mit Mineralsäure gefällt, filtriert und  getrocknet. Er stellt im trockenen Zustand  ein schwarzes Pulver dar, welches sich in  Wasser mit braunroter Farbe löst. Auf Zu  satz von Soda schlägt die Farbe nach rot  violett um.

   In     konzertrierter    Schwefelsäure    löst sich der Farbstoff mit rotvioletter Farbe.  Er erzeugt beim     Chromdruck    auf Baumwolle  tiefe,     violettbraune    Töne von sehr guter Sei  fen- und Chlorechtheit.



  Process for the production of an azo dye that is particularly suitable for chrome printing on cotton. It has been found that by coupling the nitro compound of the diazotized 1-amino-2-oxynaphthalene-4-sulfonic acid with resorcylic acid, an azo dye is obtained which, in the chrome print on cotton, has deep, violet-brown shades of very good soap and Lightfastness generated.



       EXAMPLE A paste prepared in a known manner and carefully neutralized, containing 29.4 parts of the nitrated diazo compound of 1-amino-2-oxynaphthalene-4-sulfonic acid, is stirred into a mixture of 15.4 parts of resorcylic acid, 7 parts of magnesia and 40 parts Water entered. After the combination has been completed, the dye formed is precipitated with mineral acid, filtered and dried. When dry, it is a black powder that dissolves in water with a brownish-red color. When soda is added, the color changes to red-violet.

   The dye dissolves in concentrated sulfuric acid with a red-violet color. When printing chrome on cotton, it produces deep, violet-brown tones with very good soap and chlorine fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines für den Chromdruck auf Baumwolle besonders ge eigneten Azofarbstoffes, dadurch gekenn zeichnet, dass die Nitroverbindung der dia.zo- tierten 1-Amino-2-oxynaphtalin-4-sulfosäure mit Resorcylsäure gekuppelt wird. Der Farbstoff stellt im trockenen Zu stand ein .schwarzes Pulver dar, welches sich in Wasser mit braunroter Farbe löst. PATENT CLAIM: Process for the production of an azo dye which is particularly suitable for chrome printing on cotton, characterized in that the nitro compound of the dia.zo- tated 1-amino-2-oxynaphthalene-4-sulfonic acid is coupled with resorcylic acid. When dry, the dye is a black powder that dissolves in water with a brownish-red color. Auf Zusatz von Soda schlägt: die Farbe nach rot violett um. In konzentrierter Schwefelsäure löst sich der Farbstoff mit rotvioletter Farbe. Er erzeugt beim Chromdruck auf Baumwolle tiefe, violettbraune Töne von sehr guter Seifen- und- Lichtechtheit. When soda is added: the color changes to red-violet. The dye dissolves in concentrated sulfuric acid with a red-violet color. When printing chrome on cotton, it produces deep, violet-brown tones of very good soap and lightfastness.
CH98702D 1921-03-15 1922-06-07 Process for the production of an azo dye particularly suitable for chrome printing on cotton. CH98702A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH94229T 1921-03-15
CH98702T 1922-06-07

Publications (1)

Publication Number Publication Date
CH98702A true CH98702A (en) 1923-07-02

Family

ID=25704791

Family Applications (1)

Application Number Title Priority Date Filing Date
CH98702D CH98702A (en) 1921-03-15 1922-06-07 Process for the production of an azo dye particularly suitable for chrome printing on cotton.

Country Status (1)

Country Link
CH (1) CH98702A (en)

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