CH188780A - Process for the preparation of an insoluble azo dye. - Google Patents

Process for the preparation of an insoluble azo dye.

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Publication number
CH188780A
CH188780A CH188780DA CH188780A CH 188780 A CH188780 A CH 188780A CH 188780D A CH188780D A CH 188780DA CH 188780 A CH188780 A CH 188780A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
insoluble azo
dye
diazotized
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 CH188780A publication Critical patent/CH188780A/en

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Description

  

  Verfahren zur Herstellung eines unlöslichen     Azofarbstofies.            Gemä.3    dem im Hauptpatent beschriebe  nen Verfahren erhält man einen     Acetatseide     in blaustichig roten Tönen anfärbenden un  löslichen     Azofarbstoff,    wenn man     4-Nitro-l-          aminobenzol        diazotiert    und die     Diazoverbin-          dung    mit     1-Butyl-3-oxy-7-chlortetraliydro-          ehinolin    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen Farbstoff von ähnlichen Eigen  schaften, wenn man     6-Brom-2.4-dinitro-l-          aminobenzol    diazotiert und die     Diazoverbin-          dung    mit     1-Isobutyl-3-oxy-7-methyl-tetra-          hydrochinolin    kuppelt.  



  <I>Beispiel:</I>  26,2 Teile     6-Brom-2.        4-dinitro-l-amino-          benzol    werden in der üblichen Weise     diazo-          tiert.    Die     Diazoverbindung    lässt man in eine       eisgekühlte        Lösung    von 23 Teilen 1-Isobutyl-         3-oxy-7-methyl-tetrahydrochinolin    in der ent  sprechenden Menge verdünnter Salzsäure ein  laufen und stumpft zur Beendigung der       Kupplung    mit     Natriumacetat    ab. Der erhal  tene Farbstoff färbt     Acetatseide    im Seifen  suspensionsbad rötlich blau.



  Process for the preparation of an insoluble azo dye. According to the process described in the main patent, an insoluble azo dye which stains acetate silk in bluish red tones is obtained if 4-nitro-l-aminobenzene is diazotized and the diazo compound is treated with 1-butyl-3-oxy-7-chlorotetralihydro- ehinolin couples.



  As has now also been found, a dye with similar properties is obtained if 6-bromo-2,4-dinitro-l-aminobenzene is diazotized and the diazo compound is diazotized with 1-isobutyl-3-oxy-7-methyl-tetrahydroquinoline clutch.



  <I> Example: </I> 26.2 parts 6-bromo-2. 4-Dinitro-1-aminobenzene are diazotized in the usual way. The diazo compound is poured into an ice-cold solution of 23 parts of 1-isobutyl-3-oxy-7-methyl-tetrahydroquinoline in the appropriate amount of dilute hydrochloric acid and blunted with sodium acetate to complete the coupling. The dye obtained gives the acetate silk a reddish blue color in the soap suspension bath.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines unlös lichen Azofarbstoffes, dadurch gekennzeich net, dass man 6-Brom-2. 4-dinitro-l-amino- benzol diazotiert und die Diazoverbindung mit 1-Isobutyl-3-oxy-7-methyl-tetrahydro- chinolin kuppelt. Der erhaltene Farbstoff färbt Acetatseide rötlich blau. PATENT CLAIM: Process for the preparation of an insoluble azo dye, characterized in that 6-bromo-2. 4-dinitro-1-aminobenzene is diazotized and the diazo compound is coupled with 1-isobutyl-3-oxy-7-methyl-tetrahydroquinoline. The dye obtained gives the acetate silk a reddish blue color.
CH188780D 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye. CH188780A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE188780X 1934-08-11
CH185944T 1935-05-07

Publications (1)

Publication Number Publication Date
CH188780A true CH188780A (en) 1937-01-15

Family

ID=25721293

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188780D CH188780A (en) 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH188780A (en)

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