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CH187924A - 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
CH187924A
CH187924A CH187924DA CH187924A CH 187924 A CH187924 A CH 187924A CH 187924D A CH187924D A CH 187924DA CH 187924 A CH187924 A CH 187924A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
insoluble azo
dye
oxy
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 CH187924A publication Critical patent/CH187924A/en

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Description

  

  Verfahren zur Herstellung eines unlöslichen     Azofarbstoffes.       Gemäss dem im Hauptpatent beschriebenen  Verfahren erhält man einen     Acetatseide    in  blaustichig roten Tönen anfärbenden unlös  lichen     Azofarbstoff,    wenn man     4-Nitro-l-          aminobenzol    dianotiert und die     Diazoverbin-          dung    mit     1-Butyl-3-oxy-7-chlortetrabydrochi-          nolin    kuppelt.  



  Wie nun weiter gefunden wurde, erhält  man einen     Farbstoff    von ähnlichen Eigen  schaften, wenn man     6-Chlor-2.4-dinitro-l-          aminobenzol    dianotiert und die     Diazoverbin-          dung    mit     1-Äthyl-3-oxy-7-methyl-tetrahydro-          chinolin    kuppelt.  



  <I>Beispiel:</I>  21,8 Teile     6-Chlor-2.4-dinitro-l-amino-          benzol    werden in der üblichen Weise diano  tiert. Die     Diazoverbindung    lässt man in eine  eisgekühlte Lösung von 19,2 Teilen 1-Äthyl-         3-oxy-7-methyl-tetrahydrochinolin    in der ent  sprechenden Menge verdünnter Salzsäure  einlaufen 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 shades is obtained if 4-nitro-l-aminobenzene is dianotated and the diazo compound is coupled with 1-butyl-3-oxy-7-chlorotetrabydroquinoline.



  As has now been found further, a dye with similar properties is obtained if 6-chloro-2,4-dinitro-l-aminobenzene is dianotized and the diazo compound is dianotated with 1-ethyl-3-oxy-7-methyl-tetrahydroquinoline clutch.



  <I> Example: </I> 21.8 parts of 6-chloro-2,4-dinitro-1-amino-benzene are diano-benefits in the usual way. The diazo compound is allowed to run into an ice-cold solution of 19.2 parts of 1-ethyl-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 unlöslichen Azofarbstoffes, dadurch gekennzeichnet, dass man 6-Chlor-2.4-diriitro-l-aminobenzol diano tiert und die Diazoverbindung mit 1-Äthyl- 3-oxy-7-methyl-tetrahydrochinolin kuppelt. Der erhaltene Farbstoff färbt Acetatseide rötlich blau. PATENT CLAIM :. Process for the preparation of an insoluble azo dye, characterized in that 6-chloro-2,4-diriitro-1-aminobenzene is dianoed and the diazo compound is coupled with 1-ethyl-3-oxy-7-methyl-tetrahydroquinoline. The dye obtained gives the acetate silk a reddish blue color.
CH187924D 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye. CH187924A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE187924X 1934-08-11
CH185944T 1935-05-07

Publications (1)

Publication Number Publication Date
CH187924A true CH187924A (en) 1936-11-30

Family

ID=25721285

Family Applications (1)

Application Number Title Priority Date Filing Date
CH187924D CH187924A (en) 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH187924A (en)

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