CH170932A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH170932A
CH170932A CH170932DA CH170932A CH 170932 A CH170932 A CH 170932A CH 170932D A CH170932D A CH 170932DA CH 170932 A CH170932 A CH 170932A
Authority
CH
Switzerland
Prior art keywords
preparation
good
monoazo dye
dye
dianotized
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 CH170932A publication Critical patent/CH170932A/en

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

          Aryl-    oder     Aralkylreste     ersetzt sind, mit     Sulfonsäuren    des     2-Naph-          thylamins    oder seiner Abkömmlinge in saurer  Lösung kuppelt.  



  Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Mono  azofarbstoffes, dadurch gekennzeichnet, dass  man     Anthranilsäurediphenylamid    dianotiert  und in saurer Lösung mit     2-Amirio-8-naph-          thol-6-sulfonsäure    kuppelt.  



  <I>Beispiel:</I>  28,8     GewichtsteileAnthranilsäurediplrenyl-          amid    werden wie üblich dianotiert und in    schwach mineralsaurer Lösung mit 34,1 Ge  wichtsteilen     2-Amino-S-riaphthol-6-sulfonsäur-e     gekuppelt. Nach beendeter Kupplung wird       sodaalkalisch    gestellt und der     Farbstoff    aus  gesalzen. 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 which combine high lightfastness with good leveling capacity 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 are used the carbon amide group by alkyl,

          Aryl or aralkyl radicals are replaced 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 diphenylamide is dianotized and coupled in acidic solution with 2-amino-8-naphthol-6-sulfonic acid.



  <I> Example: </I> 28.8 parts by weight of anthranilic acid diphenyl amide are dianotized as usual and coupled with 34.1 parts by weight of 2-amino-S-riaphthol-6-sulfonic acid in a weakly mineral acid solution. 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 Mono- azofarbstoffes, dadurch gekennzeichnet, dass man Anthranilsäurediphenylamid dianotiert und in saurer Lösung mit 2-Amino-8-naph- thol-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 monoazo dye, characterized in that anthranilic acid diphenylamide is dianotized 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.
CH170932D 1932-06-10 1933-06-03 Process for the preparation of a monoazo dye. CH170932A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE170932X 1932-06-10
CH168731T 1933-06-03

Publications (1)

Publication Number Publication Date
CH170932A true CH170932A (en) 1934-07-31

Family

ID=25718613

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170932D CH170932A (en) 1932-06-10 1933-06-03 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH170932A (en)

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