CH185674A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH185674A
CH185674A CH185674DA CH185674A CH 185674 A CH185674 A CH 185674A CH 185674D A CH185674D A CH 185674DA CH 185674 A CH185674 A CH 185674A
Authority
CH
Switzerland
Prior art keywords
preparation
amino
sulfonic acid
dye
monoazo dye
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 CH185674A publication Critical patent/CH185674A/en

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Description

  

  Verfahren zur Darstellung eines     Nonoazofarbstoffes.       Es wurde gefunden, dass man     Monoazo-          farbstoffe    mit den in der Praxis erwünschteren  gelbstickig roten     Nüancen    und sehr guten  Echtheitseigenschaften ei-hält, wenn man       Diazoverbindungen    von Aminen der allge  meinen Formel  
EMI0001.0006     
    worin X - Wasserstoff,     Alkyl,        Aralkyl,          Cykloalkyl    oder     Aryl,    Y     --_    einen     aliphati=     scheu oder aromatischen Rest und Z = 013  oder -N <  bedeuten,

   und der     Benzolkern     noch weitere     Substituenten    tragen kann, in  saurem Medium mit     2-Amino-8-naphthol-6-          sulfosäure    kuppelt.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Darstellung eines Mono-         azofarbstoffes,    dadurch gekennzeichnet, dass  man die     Diazoverbindung    der     1-Amino-4-          acetyl-N-methylaminobenzol-3-sulfosäure    in  saurem Medium mit der     2-Amino-8-naphtbol-          6-sulfosäure    kombiniert.  



  Der neue Farbstoff bildet getrocknet ein  rotbraunes, wasserlösliches Pulver und färbt  Wolle aus saurem Bade in egalen, lebhaften  Scharlachtönen von sehr guter Lichtechtheit.       Beispiel:     Eine wässerige Lösung von 32 kg     1-Amino-          4-        acetyl-N-    m     ethyl-ami    n     obenzol-3-    s     ulfonsäure     wird in der üblichen Weise     diazotiert.    Die  erhaltene     Diazolösurig    vereinigt man in mi  neralsaurer     Suspension    mit 24 kg     2-Amino-          8-naphthol-6-sulfosäure.    Der  <RTI  

   ID="0001.0035">   Farbstoff    wird  nach beendeter Kupplung durch Aussahen  isoliert.



  Process for the preparation of a nonoazo dye. It has been found that monoazo dyes with the yellowish-red nuances and very good fastness properties which are more desirable in practice are kept if diazo compounds of amines of the general formula are used
EMI0001.0006
    where X - hydrogen, alkyl, aralkyl, cycloalkyl or aryl, Y --_ an aliphati = shy or aromatic radical and Z = 013 or -N <,

   and the benzene nucleus can also carry further substituents, couples with 2-amino-8-naphthol-6-sulfonic acid in an acidic medium.



  The present patent relates to a process for the preparation of a monoazo dye, characterized in that the diazo compound of 1-amino-4-acetyl-N-methylaminobenzene-3-sulfonic acid is mixed with 2-amino-8-naphthol in an acidic medium - 6-sulfonic acid combined.



  The new dye forms a red-brown, water-soluble powder when dried and dyes wool from an acid bath in level, lively scarlet shades of very good lightfastness. Example: An aqueous solution of 32 kg of 1-amino-4-acetyl-N-m ethyl-aminobenzene-3-sulfonic acid is diazotized in the usual way. The diazolosurig obtained is combined in mineral acid suspension with 24 kg of 2-amino-8-naphthol-6-sulfonic acid. The <RTI

   ID = "0001.0035"> Dye is isolated by looking after the coupling is complete.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Mono azofarbstoffes, dadurch gekennzeichnet, dass man die Diazoverbindung der 1-Amino-4- acetyl-N-methylaminoberrzol-3-sulfosäure in saurem Medium mit der 2-Amino-8-naphthol- 6-sulfosäure kombiniert. Der neue Farbstoff bildet getrocknet ein rotbraunes, wasserlösliches Pulver und färbt Wolle aus saurein Bade in egalen, lebhaften Scharlachtönen von sehr guter Lichtecbtheit. PATENT CLAIM: Process for the preparation of a mono azo dye, characterized in that the diazo compound of 1-amino-4-acetyl-N-methylaminoberrzene-3-sulfonic acid is combined with 2-amino-8-naphthol-6-sulfonic acid in an acidic medium. When dried, the new dye forms a red-brown, water-soluble powder and dyes wool from acidic bath in level, lively scarlet tones of very good lightness.
CH185674D 1934-07-14 1935-07-02 Process for the preparation of a monoazo dye. CH185674A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE185674X 1934-07-14

Publications (1)

Publication Number Publication Date
CH185674A true CH185674A (en) 1936-08-15

Family

ID=5719551

Family Applications (1)

Application Number Title Priority Date Filing Date
CH185674D CH185674A (en) 1934-07-14 1935-07-02 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH185674A (en)

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