CH255317A - Process for the production of a new azo dye. - Google Patents

Process for the production of a new azo dye.

Info

Publication number
CH255317A
CH255317A CH255317DA CH255317A CH 255317 A CH255317 A CH 255317A CH 255317D A CH255317D A CH 255317DA CH 255317 A CH255317 A CH 255317A
Authority
CH
Switzerland
Prior art keywords
production
new
azo dye
sulfuric acid
dye
Prior art date
Application number
Other languages
German (de)
Inventor
Limited Imperial Ch Industries
Original Assignee
Ici Ltd
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 Ici Ltd filed Critical Ici Ltd
Publication of CH255317A publication Critical patent/CH255317A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

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

Description

  

      Verfahren    zur Herstellung eines neuen     Azofarbstoffes.       Die vorliegende Erfindung bezieht sieh        < @iif        ein    Verfahren zur Herstellung eines  neuen     Azofarbstoffes,    gemäss welchem     diazo-          iiertes        ?-Cyan-4-nitranilin    mit dem Sch     we-          felsäureester    des     N-ss-Oxyä,thyl-N-P)'-phen-          t@:@yäth5xla.nilins    gekuppelt wird.  



  Der neue Farbstoff bildet ein schwarzes       Pulver,    welches in heissem Wasser eine     bläu-          licIii-ote        Lösung    und in Schwefelsäure eine       stumpfe,    orangerote Lösung ergibt. Er färbt       Gc-lluloseacetatl@uiistseide    in     rötlielivioletten          Farbtönen.     



       Beispiel:     l     (i,    3     Teile        ?-Cyan-4-nitranilin        werden        ge-          inä.ss    der in Beispiel 1 des     brit.    Patentes       Nr.447561    beschriebenen Methode     diazotiert          lind    die so erhaltene Lösung der     Diazoverbin-          dung    auf Eis     gegossen    und das Produkt     all-          inählich    unter Rühren einer gekühlten     Lö-       <RTI  

   ID="0001.0038">   ung    von 35,9 Teilen des     Natriumsalzes     des     N-P)-Oxyäthyl-N-ss'-phenoxyäthylanilin-          sehwefelsäureesters    in 400 Teilen Wasser  hinzugesetzt. Nach beendeter     Kupplung    wird    das Gemisch langsam mit 40     ,igem        wässri-          gem        Natriumhydroxyd    so lange versetzt, und  zwar unter     Aufrechterhaltung    einer Tem  peratur von     weniger    als 10  C durch Aussen  kühlung, bis das Gemisch eben     lackmusa.lka-          liseli    reagiert.

   Hierauf wird während einer  weiteren Stunde     gerührt    und der Farbstoff  alsdann     abfiltriert,    mit wenig Wasser ge  waschen und bei 30 bis 40  C getrocknet.



      Process for the production of a new azo dye. The present invention relates to a process for the production of a new azo dye, according to which diazo-iated? -Cyan-4-nitroaniline with the sulfuric acid ester of N-ßs-Oxyä, thyl-NP) '- phen-t @: @ yäth5xla.nilins is coupled.



  The new dye forms a black powder, which in hot water gives a bluish-red solution and in sulfuric acid a dull, orange-red solution. He dyes Gc-lluloseacetatl @ uiistseide in reddish violet shades.



       Example: 1.3 parts of? -Cyan-4-nitraniline are diazotized according to the method described in Example 1 of British Patent No. 447561, and the solution of the diazo compound thus obtained is poured onto ice and the product Gradually with stirring a cooled solder <RTI

   ID = "0001.0038": 35.9 parts of the sodium salt of N-P) -oxyethyl-N-ss'-phenoxyethylaniline sulfuric acid ester in 400 parts of water are added. After the coupling is complete, 40% aqueous sodium hydroxide is slowly added to the mixture, while maintaining a temperature of less than 10 ° C. by external cooling, until the mixture just reacts lackluster.

   The mixture is then stirred for a further hour and the dye is then filtered off, washed with a little water and dried at 30 to 40.degree.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen A.zofarbstoffes, dadurch gekennzeichnet, dass diazotiertes 2-Cyan-4-nitranilin mit dem Schwefelsäureester des N-ss-Oxyäthyl-N-ss'- phenoxyäthylanilins gekuppelt wird. Der neue Farbstoff bildet ein schwarzes Pulver, welehes in heissem Wasser eine bläu lichrote Lösung und in Schwefelsäure eine stumpfe, orangerote Lösung ergibt. Er färbt Zelluloseacetatkunstseide in rötlichvioletten Farbtönen. PATENT CLAIM: Process for the production of a new A.zo dye, characterized in that diazotized 2-cyano-4-nitroaniline is coupled with the sulfuric acid ester of N-ß-oxyethyl-N-ßs'-phenoxyethylaniline. The new dye forms a black powder, which in hot water gives a bluish-red solution and in sulfuric acid a dull, orange-red solution. It dyes cellulose acetate artificial silk in reddish purple hues.
CH255317D 1944-08-28 1945-08-28 Process for the production of a new azo dye. CH255317A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB255317X 1944-08-28
CH249376T 1945-08-28

Publications (1)

Publication Number Publication Date
CH255317A true CH255317A (en) 1948-06-15

Family

ID=25729351

Family Applications (1)

Application Number Title Priority Date Filing Date
CH255317D CH255317A (en) 1944-08-28 1945-08-28 Process for the production of a new azo dye.

Country Status (1)

Country Link
CH (1) CH255317A (en)

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