CH221166A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH221166A
CH221166A CH221166DA CH221166A CH 221166 A CH221166 A CH 221166A CH 221166D A CH221166D A CH 221166DA CH 221166 A CH221166 A CH 221166A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
red
aminobenzene
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 CH221166A publication Critical patent/CH221166A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00Monoazo dyes prepared by diazotising and coupling
    • C09B29/06Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08Amino benzenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

  

  Verfahren zur Herstellung eines     Azofarbstoffes.       Gegenstand des Hauptpatentes ist ein  Verfahren zur Herstellung     eines        Azofarb-          stoffes,    gemäss welchem man     4-Nitro-2-chlor-          1-aminobenzol        diazotiert    und mit dem sauren       Schwefelsäureester    des     3-(N-Athyl-phenyl-          amino-)butanols-(1)    kuppelt.  



  Es wurde nun gefunden, dass man eben  falls einen sehr wertvollen     Azofarbstoff    er  hält, wenn man     4-Nitro-2-chlor-l-aminobenzol          diazotiert    und mit dem sauren Schwefelsäure  ester des     3-(N-Methyl-phenylamino-)butanols-          (1)    kuppelt.  



  <I>Beispiel:</I>  Eine aus 17,3     Teilen        4-Nitro-2-ohlor-l-          aminobenzol    auf dem üblichen Wege darge  stellte     Diazolösung    lässt man unter Rühren  in eine eisgekühlte     Lösung    von 25,9 Teilen  des     Schwefelsäureesters    des     3-(N-Methyl-          phenylamino-)b-utanols-(1)

      (erhalten durch  Kondensation von     3-Chlorbutanol    mit     Mono-          methylanilin    und     Überführung    der so erhal  tenen Base durch nachfolgende Einwirkung    von     Chlorsulfonsäure    in den     Sulfatoester)     einlaufen und fügt zur     Beendigung    der  Kupplung noch eine mehr als ausreichende  Menge     Na-Acetat    hinzu. Nach     Beendigung     der     Kupplung    wird auf 70 bis<B>80'</B> erwärmt,  wobei der Farbstoff in Lösung geht, und mit.

    Kochsalz     ausgesalzen.    Der erhaltene Farb  stoff ist in trockenem Zustand ein rotes Pul  ver, das sich in Wasser mit rubinroter Farbe  löst. Er besitzt eine hervorragende Affinität  für     Acetatseide    und färbt diese     in    blauroten       Tönungen    an. Der Farbstoff ist ausserdem  zum Anfärben von tierischen Stoffen, wie  Wolle, Leder, Naturseide und dergleichen,  brauchbar.



  Process for the preparation of an azo dye. The subject of the main patent is a process for the production of an azo dye, according to which 4-nitro-2-chloro-1-aminobenzene is diazotized and treated with the acid sulfuric acid ester of 3- (N-ethyl-phenyl-amino) butanol- (1 ) couples.



  It has now been found that a very valuable azo dye is obtained if 4-nitro-2-chloro-l-aminobenzene is diazotized and treated with the acid sulfuric acid ester of 3- (N-methyl-phenylamino) butanol- ( 1) couples.



  <I> Example: </I> A diazo solution prepared from 17.3 parts of 4-nitro-2-chloro-l-aminobenzene in the usual way is poured into an ice-cooled solution of 25.9 parts of the sulfuric acid ester of the 3 - (N-methyl-phenylamino-) b-utanols- (1)

      (obtained by condensation of 3-chlorobutanol with monomethylaniline and conversion of the base obtained in this way into the sulfatoester by subsequent action of chlorosulfonic acid) and adds a more than sufficient amount of sodium acetate to terminate the coupling. After the coupling has ended, the mixture is heated to 70 to 80 ', the dye going into solution, and with.

    Salted out table salt. The dye obtained is a red powder when dry, which dissolves in water with a ruby red color. It has an excellent affinity for acetate silk and dyes it in blue-red tones. The dye can also be used for dyeing animal materials such as wool, leather, natural silk and the like.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 4- 1\Titro-2-chlor-l-aminobenzol diazotiert und mit dem sauren Schwefelsäureester des 3- (Methyl-phenylamino-)butanols-(1) kuppelt. Der erhaltene Farbstoff ist in trockenem Zustand ein rotes Pulver, das sich in Wasser mit rubinroter Farbe löst. PATENT CLAIM: Process for the production of an azo dye, characterized in that 4- 1 \ titro-2-chloro-1-aminobenzene is diazotized and coupled with the acidic sulfuric acid ester of 3- (methyl-phenylamino-) butanol- (1). The dye obtained is a red powder when dry, which dissolves in water with a ruby red color. Er färbt Acetat seide in blauroten Tönen und ist ausserdem zum Anfärben von tierischen Stoffen, wie Wolle, Leder, Naturseide und dergleichen brauchbar. It dyes acetate silk in blue-red shades and is also useful for dyeing animal materials such as wool, leather, natural silk and the like.
CH221166D 1939-05-03 1940-04-09 Process for the preparation of an azo dye. CH221166A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE221166X 1939-05-03
CH216418T 1940-04-09

Publications (1)

Publication Number Publication Date
CH221166A true CH221166A (en) 1942-05-15

Family

ID=25725852

Family Applications (1)

Application Number Title Priority Date Filing Date
CH221166D CH221166A (en) 1939-05-03 1940-04-09 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH221166A (en)

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