CH170931A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH170931A
CH170931A CH170931DA CH170931A CH 170931 A CH170931 A CH 170931A CH 170931D A CH170931D A CH 170931DA CH 170931 A CH170931 A CH 170931A
Authority
CH
Switzerland
Prior art keywords
preparation
good
monoazo dye
dye
coupled
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 CH170931A publication Critical patent/CH170931A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Darstellung eines     Monoazofarbstoffes.       Es wurde gefunden, dass man zu wert  vollen     Monoazofarbstoffen    gelangt; die hohe  Lichtechtheit mit gutem     Egalisierungsver-          rnögen    und guter Waschechtheit vereinigen,  wenn man die     Diazoverbindungen    von Aminen  der     Anthranilsäure,    ihren     Halogen-Alkyl-          oder        -Alkogysubstitutionsprodukten,    in denen  die beiden Wasserstoffatome der     Karbon-          amidgruppe    durch     Alkyl-,

          Aryl-    oder     Aralkyl-          reste    ersetzt sind, mit     Sulfonsäuren    des     2-          Naphthylamins    oder seiner Abkömmlinge in  saurer Lösung kuppelt.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Mono  azofarbstoffes, dadurch gekennzeichnet, dass  man     Anthranilsäurebenzylhegahy        droanilid        di-          azotiert    und mit     2-Amino-8-naphthol-6-sulfon-          säure    kuppelt.  



  <I>Beispiel:</I>  30,8 Gewichtsteile     Anthranilsäurebenzyl-          hegahydroanilid    werden wie üblich     diazotiert       und in schwach     rnineralsaurer    Lösung mit  34,1 Gewichtsteilen     2-Amiuo-8-naphtol-6-sul-          fonsäure    gekuppelt. Nach beendeter Kupplung  wird     sodaalkalisch    gestellt und der Farbstoff       ausgesalzen.    Er färbt auf Wolle ein Rot von  guter Lichtechtheit, verbunden mit gutem       Egalisierungsvermögen    und guter Wasch  echtheit.



  Process for the preparation of a monoazo dye. It has been found that valuable monoazo dyes are obtained; combine the high lightfastness with good leveling ability and good washfastness, if the diazo compounds of amines of anthranilic acid, their halogen-alkyl or -alkogy substitution products, in which the two hydrogen atoms of the carbonamide group are replaced by alkyl,

          Aryl or aralkyl radicals are replaced, coupled with sulfonic acids of 2-naphthylamine or its derivatives in acidic solution.



  The present patent relates to a process for the preparation of a mono azo dye, characterized in that anthranilic acid benzylhegahy droanilide is azotized and coupled with 2-amino-8-naphthol-6-sulfonic acid.



  <I> Example: </I> 30.8 parts by weight of anthranilic acid benzyl hegahydroanilide are diazotized as usual and coupled in a weakly mineral acid solution with 34.1 parts by weight of 2-amino-8-naphthol-6-sulphonic acid. After the coupling is complete, it is made alkaline with soda and the dye is salted out. It dyes wool a red with good lightfastness combined with good leveling properties and good washfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines bIono- azofarbstoffes, dadurch gekennzeichnet, dass man Anthranilsäurebenzylhegahydroanilid di- azotiert und in saurer Lösung mit 2-Amino- 8-naphthol-6-sulfonsäure kuppelt. Der neue Farbstoff färbt auf Wolle ein Rot von guter Lichtechtheit, verbunden mit gutem Egalisierungsvermögen und guter Waschechtheit. PATENT CLAIM: Process for the preparation of a biono azo dye, characterized in that anthranilic acid benzylhegahydroanilide is azotized and coupled in acidic solution with 2-amino-8-naphthol-6-sulfonic acid. The new dye dyes wool a red of good lightfastness, combined with good leveling power and good washfastness.
CH170931D 1932-06-10 1933-06-03 Process for the preparation of a monoazo dye. CH170931A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE170931X 1932-06-10
CH168731T 1933-06-03

Publications (1)

Publication Number Publication Date
CH170931A true CH170931A (en) 1934-07-31

Family

ID=25718612

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170931D CH170931A (en) 1932-06-10 1933-06-03 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH170931A (en)

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