CH190721A - Process for the preparation of a water-insoluble azo dye. - Google Patents

Process for the preparation of a water-insoluble azo dye.

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Publication number
CH190721A
CH190721A CH190721DA CH190721A CH 190721 A CH190721 A CH 190721A CH 190721D A CH190721D A CH 190721DA CH 190721 A CH190721 A CH 190721A
Authority
CH
Switzerland
Prior art keywords
water
insoluble azo
azo dye
preparation
combined
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 CH190721A publication Critical patent/CH190721A/en

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Description

  

  Verfahren zur Herstellung eines     wasserunlösliehen        Azofarbstof%s.       Es wurde gefunden,     da3    man wertvolle  wasserunlösliche, zum Färben von Acetat  seide besonders geeignete     Azofarbstoffe    er  hält,     wenn    man die     Diazoverbindungen    von       Aminosulfonen    der allgemeinen Formel  
EMI0001.0008     
    worin     P,    einen.

       Alkyl-    oder     Ogalkylrest    be  deutet und der     Benzolkern    noch ein weiteres  Halogenatom enthalten kann,     mit        Kupplungs-          komponenten    der allgemeinen Formel  
EMI0001.0016     
    vereinigt, worin Ar einen aromatischen Rest  der Benzol- oder     Naphthalinreihe,    der durch       Hydroxyl-,        Alkoxy-    oder     Alkylreste    substi-         tuiert    sein kann, und X und Y Wasserstoff,       Alkyl-    oder     Oxalkylreste    bedeuten.  



  Vorliegendes Patent bezieht sich     nun    auf  ein Verfahren zur Herstellung eines wasser  unlöslichen     Azofarbstoffes,dadurch    ,gekenn  zeichnet,     dass        man,die        Diazoverbindung    von       3-Chlor-4-amino-phenyl    -     oxäthylsulfon    mit       Diäthylanilin        vereinigt.     



  Der so erhaltene neue Farbstoff färbt       Acetatseide        unter    Zusatz eines     Dispergier-          mittels    in lebhafter oranger Nuance von guter  Lichtechtheit,     Nasstechtheit    und     Weiss@ätzbar-          keit.     



  <I>Beispiel:</I>  235 Teile     3-Chlor-4-aminophenyl-oxäthyl-          sulfon    werden in Aceton .gelöst und mit Hilfe  von<B>70</B> Teilen     Natriumnitrit        diazotiert.    Die  erhaltene     Diazolösung    wird mit einer kalten       salzsauren        Lösung    von<B>150</B> Teilen     Diäthyl-          anilin    vereinigt.

   Nach     Beendigung    der     in          mineralsaurer    Lösung stattfindenden Kupp  lung stumpft     man    mit     Natriumacetat    ab     und         saugt nach Entfernung des Acetons den ent  standenen Farbstoff ab.



  Process for the preparation of a water-insoluble azo dye% s. It has been found that valuable water-insoluble azo dyes which are particularly suitable for dyeing acetate can be obtained if the diazo compounds of aminosulfones of the general formula are used
EMI0001.0008
    where P, a.

       Alkyl or Ogalkylrest means and the benzene nucleus can contain a further halogen atom, with coupling components of the general formula
EMI0001.0016
    combined, in which Ar is an aromatic radical of the benzene or naphthalene series which may be substituted by hydroxyl, alkoxy or alkyl radicals, and X and Y are hydrogen, alkyl or oxalkyl radicals.



  The present patent relates to a process for the preparation of a water-insoluble azo dye, characterized in that the diazo compound of 3-chloro-4-aminophenyl - oxäthylsulfon is combined with diethylaniline.



  The new dye thus obtained dyes acetate silk with the addition of a dispersing agent in a lively orange shade of good lightfastness, wetfastness and whiteness etchability.



  <I> Example: </I> 235 parts of 3-chloro-4-aminophenyl-oxethylsulfone are dissolved in acetone and diazotized with the aid of 70 parts of sodium nitrite. The diazo solution obtained is combined with a cold hydrochloric acid solution of 150 parts of diethyl aniline.

   When the coupling, which takes place in mineral acid solution, has ended, the mixture is blunted with sodium acetate and, after the acetone has been removed, the resulting dye is suctioned off.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines wasser unlöslichen Azofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung von ss-Chlor-4-amino-phenyl-oxäthylsulfon mit Diäthylanilin vereinigt. PATENT CLAIM: Process for the production of a water-insoluble azo dye, characterized in that the diazo compound of ß-chloro-4-aminophenyl-oxethylsulfone is combined with diethylaniline. Der so erhaltene neue Farbstoff färbt Acetatseide unter Zusatz eines Dispergier- mittels in lebhafter oranger Nuance von guter Lichtechtheit, Nassechtheit und Weiss- ätzbarkeit. The new dye obtained in this way dyes acetate silk with the addition of a dispersing agent in a lively orange shade of good lightfastness, wetfastness and white etchability.
CH190721D 1935-04-04 1936-03-26 Process for the preparation of a water-insoluble azo dye. CH190721A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE190721X 1935-04-04

Publications (1)

Publication Number Publication Date
CH190721A true CH190721A (en) 1937-05-15

Family

ID=5725138

Family Applications (1)

Application Number Title Priority Date Filing Date
CH190721D CH190721A (en) 1935-04-04 1936-03-26 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH190721A (en)

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