CH268752A - Process for the preparation of a new monoazo dye. - Google Patents

Process for the preparation of a new monoazo dye.

Info

Publication number
CH268752A
CH268752A CH268752DA CH268752A CH 268752 A CH268752 A CH 268752A CH 268752D A CH268752D A CH 268752DA CH 268752 A CH268752 A CH 268752A
Authority
CH
Switzerland
Prior art keywords
preparation
new
sulfuric acid
dye
monoazo 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 CH268752A publication Critical patent/CH268752A/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     Monoazofarbatoffes.       Gegenstand der vorliegenden     Erfindung     ist ein     Verfahren    zur Herstellung eines neuen       Monoazofarbstoffes,    gemäss welchem     N-Äthyl-          N-ss-oxy-l,-phenoxypropylanilin,        diazotiertes    2  Chlor-4-nitranilin und ein     Sulfatierun;

  ysmittel     miteinander derart     -umgesetzt    werden, dass die       Oty        gruppe    in die entsprechende Schwefel  säureestergruppe     übergeführt,    wird und der       Diazorest    in     4-Stellung    zum tertiären Stick  stoffatom eintritt.  



  Der neue Farbstoff ist. ein dunkelbraunes  Pulver, welches in warmem Wasser unter Bil  dung einer roten Lösung und in     konz.    Schwe  felsäure     -unter    Bildung einer braunen Lösung  löslich ist.  



       Beispiel:     17,25 Teile     2-Chlor-4-nitranilin    werden in  bekannter Weise     diazotiert,    und die     Diazo-          lösung    wird in eine gekühlte,     wässrige    Lösung  von 37,3 Teilen des     Natriumsalzes    des     N-          Äthyl    - N     -fl-oxy-y-phenoxy-propylanilin-schwe-          felsäureesters    eingetragen, wobei die Lösung  genügend     Carbonat,    enthält,

   dass das Gemisch  während des     Eintragens    gegen Lackmus     alka-          liseh    bleibt. Das Gemisch wird während    Stunden gerührt und der abgeschiedene neue  Farbstoff     abfiltriert,    getrocknet und ge  mahlen.  



  Der neue Farbstoff färbt     Celluloseacetat-          Seide    in hellroten Tönen von guter Lichtecht  heit, wenn er aus einem     Natriumchlorid    oder  Natriumsulfat enthaltenden, neutralen, leicht.  sauren oder     leieht    alkalischen Färbebade auf  getragen wird.



  Process for the production of a new monoazo carbate. The present invention relates to a process for the preparation of a new monoazo dye, according to which N-ethyl-N-ss-oxy-1, -phenoxypropylaniline, diazotized 2-chloro-4-nitroaniline and a sulfation;

  y solvents are reacted with one another in such a way that the Oty group is converted into the corresponding sulfuric acid ester group and the diazo radical is in the 4-position to the tertiary nitrogen atom.



  The new dye is. a dark brown powder, which in warm water to form a red solution and in conc. Sulfuric acid - is soluble to form a brown solution.



       Example: 17.25 parts of 2-chloro-4-nitroaniline are diazotized in a known manner, and the diazo solution is poured into a cooled, aqueous solution of 37.3 parts of the sodium salt of N-ethyl-N-fl-oxy-y -phenoxy-propylaniline-sulfuric acid ester entered, whereby the solution contains sufficient carbonate,

   that the mixture remains alkaline during the introduction against litmus. The mixture is stirred for hours and the deposited new dye is filtered off, dried and ground.



  The new dye dyes cellulose acetate silk in light red tones of good lightfastness if it is made from a neutral, neutral one containing sodium chloride or sodium sulfate. acidic or alkaline dye bath is applied.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Monoazofarbstoffes, dadurch gekennzeichnet, dass N-Äthyl-N-ss-oxy-y-phenoxy propylanilin, diazotiertes 2-Chlor-4-nitranilin und ein Sulfa- tierungsmittel miteinander derart umgesetzt werden, dass die Oxygruppe in die entspre chende Schwefelsäureestergruppe übergeführt. wird und der Diazorest in 4-Stellung zum ter tiären Stickstoffatom eintritt. PATENT CLAIM: Process for the preparation of a new monoazo dye, characterized in that N-ethyl-N-ss-oxy-y-phenoxy propylaniline, diazotized 2-chloro-4-nitroaniline and a sulfating agent are reacted with one another in such a way that the oxy group in the corresponding sulfuric acid ester group transferred. and the diazo radical enters the 4-position to the tertiary nitrogen atom. Der neue Farbstoff ist ein dunkelbraunes Pulver, welches in warmem Wasser unter Bil dung einer roten Lösung und in konz. Schwe felsäure unter Bildring einer braunen Lösung löslich ist. The new dye is a dark brown powder, which in warm water to form a red solution and in conc. Sulfuric acid is soluble under the image ring of a brown solution.
CH268752D 1945-02-16 1946-02-16 Process for the preparation of a new monoazo dye. CH268752A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB268752X 1945-02-16
CH251390T 1946-02-16

Publications (1)

Publication Number Publication Date
CH268752A true CH268752A (en) 1950-05-31

Family

ID=25729533

Family Applications (1)

Application Number Title Priority Date Filing Date
CH268752D CH268752A (en) 1945-02-16 1946-02-16 Process for the preparation of a new monoazo dye.

Country Status (1)

Country Link
CH (1) CH268752A (en)

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