[go: up one dir, main page]

CH189036A - Process for the preparation of a water-soluble monoazo dye. - Google Patents

Process for the preparation of a water-soluble monoazo dye.

Info

Publication number
CH189036A
CH189036A CH189036DA CH189036A CH 189036 A CH189036 A CH 189036A CH 189036D A CH189036D A CH 189036DA CH 189036 A CH189036 A CH 189036A
Authority
CH
Switzerland
Prior art keywords
water
preparation
monoazo dye
soluble 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 CH189036A publication Critical patent/CH189036A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

      Verfahren    zur Herstellung eines wasserlöslichen     Monoazofarbstoffes.       Im Hauptpatent ist ein Verfahren be  schrieben, gemäss welchem ein neuer, wasser  löslicher, besonders zum Färben von     Acetat-          ,geide    wertvoller     Monoazofarbstoff    durch  Kuppeln von dianotiertem     p-Nitranilin    mit  dem     Natriumsalz    des     Phenyltaurins,    .in wäs  seriger     Natriumkarbonatlösung    erhalten     wird.     



  Gemäss vorliegender Abänderung jenes  Verfahrens wird ein wasserlöslicher, beson  ders zum Färben von     Acetatseide        wertvoller          l@Zonoa.zofarbstoff    dadurch     hergestellt,    dass  man dianotiertes     p-Nitranilin    mit     N-f-Hy-          droxy-y-stilfopropyIanilin    kuppelt.  



       Beispiel:     Man dianotiert auf übliche Weise 138  Teile     p-Nitranilin    und fügt die     Diazolösung     zu einer eiskalten Lösung von     ?53    Teilen des       Natriumsalzes    des     N-ss-Hydroxy-y-sulfopro-          pylanilins    in 4000 Teilen Wasser, welches       \?08    Teile Natriumkarbonat enthält.

   Nach  Vollendung der rasch     vonstatten    gehenden  Kupplung wird das     Kupplungsgemisch    auf  65   C     erwärmt    und der neue     Farbstoff    durch         Aus.salzen    und Filtrieren     abgesondert.    Er  stellt, in trockenem Zustande, ein bräunlich  gelbes Pulver dar, welches mit Wasser eine       gelblich-rote,    mit konzentrierter Schwefel  säure eine     rötlich-braune        Lösung    gibt.  



  Der neue Farbstoff färbt     Aoetatseide    in  neutraler, 1     %        ,Salz    enthaltender Flotte, in       rötlich-orangefarbenen    Tönen.



      Process for the preparation of a water-soluble monoazo dye. The main patent describes a process according to which a new, water-soluble monoazo dye, which is particularly valuable for dyeing acetate, is obtained by coupling dianotated p-nitroaniline with the sodium salt of phenyltaurine, in aqueous sodium carbonate solution.



  According to the present modification of that process, a water-soluble dye, which is particularly valuable for dyeing acetate silk, is produced by coupling dianotated p-nitroaniline with N-f-hydroxy-y-stilfopropylaniline.



       Example: 138 parts of p-nitroaniline are dianotized in the usual way and the diazo solution is added to an ice-cold solution of 53 53 parts of the sodium salt of N-ß-hydroxy-γ-sulfopropylaniline in 4000 parts of water, which contains 08 parts of sodium carbonate .

   After the coupling, which takes place quickly, has been completed, the coupling mixture is heated to 65 ° C. and the new dye is separated off by salting out and filtering. When dry, it is a brownish-yellow powder, which gives a yellowish-red solution with water and a reddish-brown solution with concentrated sulfuric acid.



  The new dye dyes acetate silk in a neutral liquor containing 1% salt, in reddish-orange tones.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen, wasserlöslichen Monoazofarbstoffes, dadurch gekennzeichnet, dass man dianotiertes p-Ni- tranilin mit N-ss-Hydroxy-y-sulfopropylani- lin kuppelt. Der neue Farbstoff ist ein bräunlich-gelbes Pulver, das mit Wasser eine gelblich-rote, mit konzentrierter Schwefel säure eine rötlich-braune Lösung gibt. PATENT CLAIM: Process for the production of a new, water-soluble monoazo dye, characterized in that dianotated p-nitraniline is coupled with N-ss-hydroxy-y-sulfopropylaniline. The new dye is a brownish-yellow powder that gives a yellowish-red solution with water and a reddish-brown solution with concentrated sulfuric acid. Er erzeugt auf Acetatseide rötlich-orangefarbene Töne. It creates reddish-orange tones on acetate silk.
CH189036D 1934-07-27 1935-07-22 Process for the preparation of a water-soluble monoazo dye. CH189036A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB189036X 1934-07-27
CH184307T 1935-07-22

Publications (1)

Publication Number Publication Date
CH189036A true CH189036A (en) 1937-01-31

Family

ID=25721010

Family Applications (1)

Application Number Title Priority Date Filing Date
CH189036D CH189036A (en) 1934-07-27 1935-07-22 Process for the preparation of a water-soluble monoazo dye.

Country Status (1)

Country Link
CH (1) CH189036A (en)

Similar Documents

Publication Publication Date Title
CH250811A (en) Process for the preparation of a new copper-compatible polyazo dye.
CH189036A (en) Process for the preparation of a water-soluble monoazo dye.
CH189035A (en) Process for the preparation of a water-soluble monoazo dye.
DE596755C (en) Process for the preparation of disazo dyes
CH189037A (en) Process for the preparation of a water-soluble monoazo dye.
CH189039A (en) Process for the preparation of a water-soluble monoazo dye.
CH214811A (en) Process for the preparation of a trisazo dye.
CH189038A (en) Process for the preparation of a water-soluble monoazo dye.
CH261368A (en) Process for the preparation of a monoazo dye.
CH180582A (en) Process for the production of a new dye.
CH117270A (en) Process for the production of a new dye.
CH211844A (en) Process for the preparation of an azo dye.
CH119895A (en) Process for the production of a new dye.
CH267274A (en) Process for the preparation of a monoazo dye.
CH144489A (en) Process for the preparation of a disazo dye.
CH267275A (en) Process for the preparation of a monoazo dye.
CH270832A (en) Process for the preparation of a trisazo dye.
CH211842A (en) Process for the preparation of an azo dye.
CH222693A (en) Process for the preparation of a monoazo dye.
CH204149A (en) Process for the preparation of a water-soluble disazo dye.
CH266025A (en) Process for the preparation of a monoazo dye.
CH189040A (en) Process for the preparation of a water-soluble monoazo dye.
CH213001A (en) Process for the preparation of an azo dye.
CH292300A (en) Process for the preparation of a monoazo dye of the pyrazolone series.
CH174539A (en) Process for the preparation of a trisazo dye.