CH121711A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH121711A
CH121711A CH121711DA CH121711A CH 121711 A CH121711 A CH 121711A CH 121711D A CH121711D A CH 121711DA CH 121711 A CH121711 A CH 121711A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
chrome
clear
red
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
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 Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH121711A publication Critical patent/CH121711A/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
    • C09B45/38—Preparation from compounds with —OH and —COOH adjacent in the same ring or in peri position
    • C09B45/40—Chromium 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
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid
    • 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    zum     Hauptpatent    Nr. 116152.    Verfahren zur Herstellung eines     Azofar stofes.       Es wurde gefunden, dass man zu einem  wertvollen     Azofarbstoff    dadurch gelangt, dass  man     asymetrisches        m-Xylidin    in üblicher    Weise     diazotiert    und die     Diazoverbindung    mit  1     (4'-Oxy-3'-karboxyphenylsulfoäthylamiri)-8-          naphtol-3.6-disulfosäure    der Formel:

    
EMI0001.0011     
  
     <I>Beispiel:</I>  Die in üblicher Weise aus 121 Teilen       asymetrischem        m-Xylidin,    69 Teilen Natrium  nitrit und der nötigen Menge Salzsäure in  üblicher Weise hergestellte     Diazolösung    lässt  man in eine mit überschüssiger Soda ver  setzte eiskalte Lösung von 547 Teilen 1 (4'  Oxy-3'-karboxyphenylsulfoäthylamin)-     8-naph-          tol-3.6-disulfosäure    einlaufen. Nach etwa       6-8-stündigem    Rühren ist die Kupplung  beendet.

   Der durch     Aussalzen    abgeschiedene  Farbstoff bildet in trockenem Zustande ein  dunkelrotes Pulver, welches sich in Wasser  und konzentrierter Schwefelsäure mit leuch-         tend        bläulichroter    Farbe löst. Im Chromdruck  auf Baumwolle wird ein klares, seifen- und  chlorechtes Scharlach erhalten, . auf Wolle       nachchromiert    ein klares Rot von vorzüg  licher     Walkechtheit.  



      Additional patent to the main patent No. 116152. Process for the production of an Azofar substance. It has been found that a valuable azo dye can be obtained by diazotizing asymmetrical m-xylidine in the usual way and treating the diazo compound with 1 (4'-oxy-3'-carboxyphenylsulfoethylamine) -8-naphthol-3,6-disulfonic acid of the formula:

    
EMI0001.0011
  
     <I> Example: </I> The diazo solution, prepared in the usual way from 121 parts of asymmetrical m-xylidine, 69 parts of sodium nitrite and the necessary amount of hydrochloric acid, is immersed in an ice-cold solution of 547 parts 1 with excess soda (4 'Oxy-3'-carboxyphenylsulfoethylamine) - 8-naphthol-3,6-disulfonic acid run in. The coupling is complete after about 6-8 hours of stirring.

   The dye separated by salting out forms a dark red powder when dry, which dissolves in water and concentrated sulfuric acid with a bright bluish red color. In the chrome print on cotton, a clear, soap and chlorine-fast scarlet fever is obtained,. A clear red with excellent flexing fastness after chrome-plated on wool.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wert vollen Azofarbstoffes, dadurch gekennzeichnet, dass man asymetrisches m-Xylidin diazotiert und mit der 1 (4'-Oxy-3'-karboxyphenylsulfo- äthylamin)-8-naphtol-3. 6-disulfosäure von der Formel EMI0002.0001 kuppelt. Der ausgesalzene Farbstoff bildet trocken ein dunkelrotes Pulver, welches sich in Wasser und konzentrierter Schwefelsäure mit leuchtend bläulichroter Farbe löst. PATENT CLAIM: Process for the preparation of a valuable azo dye, characterized in that asymmetric m-xylidine is diazotized and 1 (4'-oxy-3'-carboxyphenylsulfoethylamine) -8-naphthol-3. 6-disulfonic acid of the formula EMI0002.0001 clutch. The salted-out dye forms a dark red powder when dry, which dissolves in water and concentrated sulfuric acid with a bright bluish-red color. Im Chromdruck auf Baumwolle wird ein klares, seifen- und chlorechtes Scharlach erhalten und auf Wolle nachchromiert ein klares Rot von vorzüglicher Walkechtheit. In the chrome print on cotton, a clear, soap- and chlorine-fast scarlet is obtained and after-chrome-plated on wool, a clear red with excellent flexing fastness.
CH121711D 1925-03-27 1925-03-27 Process for the preparation of an azo dye. CH121711A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH121711T 1925-03-27
CH116152T 1926-08-02

Publications (1)

Publication Number Publication Date
CH121711A true CH121711A (en) 1927-08-01

Family

ID=25708636

Family Applications (1)

Application Number Title Priority Date Filing Date
CH121711D CH121711A (en) 1925-03-27 1925-03-27 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH121711A (en)

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