CH191433A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH191433A
CH191433A CH191433DA CH191433A CH 191433 A CH191433 A CH 191433A CH 191433D A CH191433D A CH 191433DA CH 191433 A CH191433 A CH 191433A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
dioxyethylaminobenzene
chloro
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 CH191433A publication Critical patent/CH191433A/en

Links

Landscapes

  • Coloring (AREA)

Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Gemäss dem im Hauptpatent beschriebe  nen Verfahren erhält man einen     Acetatseide     in sehr lichtechten klaren Scharlachtönen  anfärbenden Farbstoff, wenn man     diazotier-          tes        4-Nitro-l-aminobenzol    mit     3-Chlor-l-          dioxyäthylaminobenzol    kuppelt.  



  Wie     nun        weiter    gefunden wurde, erhält  man einen     Farbstoff    von ganz ähnlichen  Eigenschaften, wenn man     diazotiertes    2. 6  Dibrom-l-amino-4-nitrobenzol mit     3-Chlor-          l-dioxyäthylaminobenzol    kuppelt.  



  <I>Beispiel:</I>  Eine durch Eintragen von 29,6 Teilen       2.6-Dibrom-l-amino-4-nitrobenzol    in 130       'Peile    konzentrierter Schwefelsäure und 7       Teile        Natriumnitrit    bei 25 bis<B>30'</B> und Auf  giessen auf Eis     dargestellte        Dia.zolösung    lässt    man in eine     Lösung    von 21;

  6 Teilen     3-Chlor-          1-dioxyäthylaminobenzol        in    25     Teilen    Salz  säure<B>23'</B>     B6    und 1000 Teilen Wasser     ein-          fliessen    und stumpft zur Beendigung der       Kupplung    mit     Natriumhydroxyd    ab. Der  Farbstoff färbt     Acetatseide    in echten, gelb  braunen Tönen an.



  Process for the preparation of an azo dye. According to the process described in the main patent, a dye which stains acetate silk in very lightfast, clear scarlet shades is obtained when diazotized 4-nitro-1-aminobenzene is coupled with 3-chloro-1-dioxyethylaminobenzene.



  As has now also been found, a dye with very similar properties is obtained when diazotized 2.6-dibromo-1-amino-4-nitrobenzene is coupled with 3-chloro-1-dioxyethylaminobenzene.



  <I> Example: </I> One by adding 29.6 parts of 2,6-dibromo-l-amino-4-nitrobenzene in 130 'of concentrated sulfuric acid and 7 parts of sodium nitrite at 25 to <B> 30' </B> Dia.zolösung shown and poured onto ice is left in a solution of 21;

  6 parts of 3-chloro-1-dioxyethylaminobenzene in 25 parts of hydrochloric acid 23 'B6 and 1000 parts of water are poured in and blunted with sodium hydroxide to complete the coupling. The dye stains acetate silk in real, yellow-brown tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azo- farbstoffes,dadurch .gekennzeichnet, dass man diazotiertes 2.6-Dibrom-l-amino-4- nitrobenzol mit 3-Chlor-l-dioxyäthylamino- benzol kuppelt. Der Farbstoff färbt Acetat seide in echten, gelbbraunen Tönen an. PATENT CLAIM: Process for the preparation of an azo dye, characterized in that diazotized 2,6-dibromo-1-amino-4-nitrobenzene is coupled with 3-chloro-1-dioxyethylaminobenzene. The dye stains acetate silk in real, yellow-brown tones.
CH191433D 1935-03-13 1936-02-06 Process for the preparation of an azo dye. CH191433A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE191433X 1935-03-13
CH188887T 1936-02-06

Publications (1)

Publication Number Publication Date
CH191433A true CH191433A (en) 1937-06-15

Family

ID=25721701

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191433D CH191433A (en) 1935-03-13 1936-02-06 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH191433A (en)

Similar Documents

Publication Publication Date Title
CH191433A (en) Process for the preparation of an azo dye.
CH191434A (en) Process for the preparation of an azo dye.
AT107575B (en) Process for the preparation of monoazo dyes.
CH191431A (en) Process for the preparation of an azo dye.
CH177842A (en) Process for the preparation of an azo dye.
CH191428A (en) Process for the preparation of an azo dye.
CH191429A (en) Process for the preparation of an azo dye.
CH191427A (en) Process for the preparation of an azo dye.
CH191426A (en) Process for the preparation of an azo dye.
CH170926A (en) Process for the preparation of an azo dye.
CH191430A (en) Process for the preparation of an azo dye.
CH183862A (en) Process for the preparation of an azo dye.
CH183864A (en) Process for the preparation of an azo dye.
CH187915A (en) Process for the preparation of an insoluble azo dye.
CH178417A (en) Process for the preparation of an azo dye.
CH191432A (en) Process for the preparation of an azo dye.
CH170928A (en) Process for the preparation of an azo dye.
CH187914A (en) Process for the preparation of an insoluble azo dye.
CH189798A (en) Process for the preparation of an insoluble azo dye.
CH185050A (en) Process for the production of a new azo dye.
CH177844A (en) Process for the preparation of an azo dye.
CH177845A (en) Process for the preparation of an azo dye.
CH183863A (en) Process for the preparation of an azo dye.
CH213427A (en) Process for the production of a new azo dye.
CH161842A (en) Process for the production of a new azo dye.