CH195328A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH195328A
CH195328A CH195328DA CH195328A CH 195328 A CH195328 A CH 195328A CH 195328D A CH195328D A CH 195328DA CH 195328 A CH195328 A CH 195328A
Authority
CH
Switzerland
Prior art keywords
monoazo dye
preparation
acetyl
amino
naphthol
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 CH195328A publication Critical patent/CH195328A/en

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Description

  

  Verfahren zur Herstellung eines     Monoazofarbstoffes.       Es wurde gefunden, dass man neue wert  volle     Monoazofarbstoffe    erhält, wenn man       Diazoverbindungen    von     aromatichen    Ami  nen folgender Formel:  
EMI0001.0005     
    worin X = Wasserstoff oder einen     aliphati-          schen    Rest mit 1 bis 3     C-Atomen    bedeutet,  mit     1!-Acetylamino-8-naphthol-3.    6- oder 4. 6  disulfonsäure kuppelt.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur     Herstellung    eines     Mono-          azofarbstoffes,    dadurch .gekennzeichnet, dass  man die     Diazoverbindung    von     1-(Acetyl-          äthylamino)-4-aminobenzol    mit     1-Acetyl-          amino-8-naphthol-3.6-,disulfonsäure    kuppelt.  



  Der so erhaltene     Monoazofarbstoff    bildet  ein dunkelrotes,     wasserlösliches    Pulver und  färbt Wolle in lebhaften,     blaustichigroten     Tönen von hervorragendem     Egalisierungs-          vermögen.            ,Bleispiel:

       17,8 Teile     1-(Aoetyl-äthyl-amino)-4-          aminobenzol    werden in ,der üblichen Weise  im     wässrigen    Medium     diazotiert.    Die erhal  tene     Diazolösung        lässt    man unter Kühlung  in e in- mit     überschüssigem        Natriumcarbonat          versetzte    Lösung von     @37    Teilen     1-Acetyl-          amino=8-naphthol=3.6-disulfon6äure    laufen.

    Nach     beendeter        Farbstoffbildung    wird das  Produkt durch     Aussalzen        isoliert    und ge  trocknet.



  Process for the preparation of a monoazo dye. It has been found that new valuable monoazo dyes are obtained if diazo compounds of aromatic amines of the following formula are used:
EMI0001.0005
    where X = hydrogen or an aliphatic radical with 1 to 3 carbon atoms, with 1! -acetylamino-8-naphthol-3. 6- or 4. 6 disulfonic acid couples.



  The present patent relates to a process for the production of a monoazo dye, characterized in that the diazo compound of 1- (acetyl-ethylamino) -4-aminobenzene with 1-acetyl-amino-8-naphthol-3.6-, disulfonic acid clutch.



  The monoazo dye obtained in this way forms a dark red, water-soluble powder and dyes wool in lively, bluish-tinged red shades with excellent leveling power. , Lead game:

       17.8 parts of 1- (aoetyl-ethyl-amino) -4-aminobenzene are diazotized in the usual manner in an aqueous medium. The diazo solution obtained is allowed to run with cooling in a solution of 37 parts of 1-acetylamino = 8-naphthol = 3.6-disulphonic acid to which excess sodium carbonate has been added.

    When the dye has formed, the product is isolated by salting out and dried.

Claims (1)

PATENTANSPRUCH Verfahren zur Herstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung von 1-(Acetyl- äthyl-amino)-4-aminobenzol mit 1-Acetyl- amino,-8-naphthol-3.6-disulfonsäure kuppelt. Der eo erhaltene Monoazofarbstoff bildet ein dunkelrotes wasserlösliche.; Pulver und färbt Wolle in lebhaften, blaustichigroten Tönen von hervorragendem Egalisierungs- vermögen. PATENT CLAIM Process for the production of a mono azo dye, characterized in that the diazo compound of 1- (acetyl-ethyl-amino) -4-aminobenzene is coupled with 1-acetyl-amino, -8-naphthol-3,6-disulfonic acid. The eo obtained monoazo dye forms a dark red water-soluble; Powder and dyes wool in lively, blue-tinged red tones with excellent leveling properties.
CH195328D 1935-12-02 1936-11-23 Process for the preparation of a monoazo dye. CH195328A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE195328X 1935-12-02

Publications (1)

Publication Number Publication Date
CH195328A true CH195328A (en) 1938-01-31

Family

ID=5748924

Family Applications (1)

Application Number Title Priority Date Filing Date
CH195328D CH195328A (en) 1935-12-02 1936-11-23 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH195328A (en)

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