CH191427A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH191427A
CH191427A CH191427DA CH191427A CH 191427 A CH191427 A CH 191427A CH 191427D A CH191427D A CH 191427DA CH 191427 A CH191427 A CH 191427A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
chloro
dye
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 CH191427A publication Critical patent/CH191427A/en

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Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Gemäss dem im Hauptpatent beschrie  benen Verfahren erhält man einen Acetat  seide in sehr lichtechten, klaren Scharlach  tönen anfärbenden     Farbstoff,    wenn man di  anotiertes     4-Nitro-l-aminobenzol    mit     3-Chlor-          1-dioxyäthylaminobenzol    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen     Farbstoff    von ganz ähnlichen Echt  heitseigenschaften, wenn man dianotiertes       4-Nitro-2-chlor-l-aminobenzol    mit     3-Chlor-l-          dioxyäthylaminobenzol    kuppelt.

      <I>Beispiel:</I>    Eine aus 17,3 Teilen     4-Nitro-2-Chlor-1-          aminobenzol    auf dem üblichen Wege dar  gestellte     Diazolösung    lässt man in eine kalte  Lösung von     i;1,6    Teilen     3-Chlor-l-dioxyäthyl-          aminobenzol    in 25 Teilen Salzsäure 23<B>0</B>     Bd       und 800 Teilen Wasser einfliessen und stumpft  zur Beendigung der Kupplung mit Natrium  acetat ab. Der anfallende     Farbstoff    gibt auf       Acetatseide    gefärbt blaustichige Rottöne von  guten     Allgemeinechtheiten    und vorzüglicher  Lichtechtheit.



  Process for the preparation of an azo dye. According to the process described in the main patent, an acetate silk is obtained in a very lightfast, clear, scarlet-colored dye if one couples the anotized 4-nitro-1-aminobenzene with 3-chloro-1-dioxyethylaminobenzene.



  As has now been found further, a dye with very similar authenticity properties is obtained if dianotated 4-nitro-2-chloro-1-aminobenzene is coupled with 3-chloro-1-dioxyethylaminobenzene.

      <I> Example: </I> A diazo solution made from 17.3 parts of 4-nitro-2-chloro-1-aminobenzene in the usual way is allowed to pour into a cold solution of 1.6 parts of 3-chloro L-dioxyethyl aminobenzene in 25 parts of hydrochloric acid 23 Bd and 800 parts of water are poured in and blunted with sodium acetate to terminate the coupling. When dyed on acetate silk, the resulting dye gives bluish red tones of good all-round fastness properties and excellent lightfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man di anotiertes 4-Nitro-2-chlor-l-aminobenzol mit 3-Chlor-l-dioxyäthylaminobenzol kuppelt. Der Farbstoff färbt Acetatseide in blaustichigen Rottönen von guten Allgemeinechtheiten und vorzüglicher Lichtechtheit an: PATENT CLAIM: Process for the preparation of an azo dye, characterized in that the anotized 4-nitro-2-chloro-1-aminobenzene is coupled with 3-chloro-1-dioxyethylaminobenzene. The dye stains acetate silk in bluish red tones with good all-round fastness properties and excellent lightfastness:
CH191427D 1935-03-13 1936-02-06 Process for the preparation of an azo dye. CH191427A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE191427X 1935-03-13
CH188887T 1936-02-06

Publications (1)

Publication Number Publication Date
CH191427A true CH191427A (en) 1937-06-15

Family

ID=25721695

Family Applications (1)

Application Number Title Priority Date Filing Date
CH191427D CH191427A (en) 1935-03-13 1936-02-06 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH191427A (en)

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