CH188775A - 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
CH188775A
CH188775A CH188775DA CH188775A CH 188775 A CH188775 A CH 188775A CH 188775D A CH188775D A CH 188775DA CH 188775 A CH188775 A CH 188775A
Authority
CH
Switzerland
Prior art keywords
insoluble azo
azo dye
preparation
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 CH188775A publication Critical patent/CH188775A/en

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Description

  

  Verfahren zur Herstellung eines     unlöslichen        Azofarbstoffes.       Gemäss 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-chlortetrahydro-          chinolin    kuppelt.  



  Wie nun weiter gefunden wurde. erhält  man einen Farbstoff von ähnlichen Eigen  schaften, wenn man 2.     6-Dichlor-l-amino-4-          nitrobenzol    diazotiert und die     Diazoverbin-          dung    mit     1-n-Butyl-3-oxy-7-methyl-tetra-          hydroehinolin    kuppelt.  



       Beispiel:     20,7 Teile     2.6-Dichlor-l-amino-4-nitro-          benzol    werden in der üblichen Weise diano  tiert. Die     Diazoverbindung    lässt man in eine  eisgekühlte Lösung von 23, Teilen 1-n-Butyl-         :3-oxy-7-methyl-tetrahydrochinolin        inder    ent  sprechenden Menge     verdünnter    Salzsäure  einlaufen und stumpft zur Beendigung der  Kupplung mit     Natriumacetat    ab. Der erhal  tene Farbstoff färbt     Acetatseide    im Seifen  suspensionsbad blaustichig braun.



  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 diazotized and the diazo compound is coupled with 1-butyl-3-oxy-7-chlorotetrahydroquinoline .



  As has now been found further. A dye with similar properties is obtained if 2. 6-dichloro-1-amino-4-nitrobenzene is diazotized and the diazo compound is coupled with 1-n-butyl-3-oxy-7-methyl-tetrahydroquinoline.



       Example: 20.7 parts of 2,6-dichloro-1-amino-4-nitrobenzene are dianoed in the usual way. The diazo compound is allowed to run into an ice-cold solution of 23 parts of 1-n-butyl: 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 bluish brown tint in the soap suspension bath.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines unlös lichen Azofarbstoffes, dadurch gekennzeich net, dass man 2.6-Dichlor-l-amino-4-nitro- benzol diazotiert und die Diazoverbindung mit 1- n - Butyl - 3- oxy- 7 -methyl -tetrahydro- ehinolin kuppelt. Der erhaltene Farbstoff färbt Acetatseide in blaustichig braunen Tönen. PATENT CLAIM: Process for the production of an insoluble azo dye, characterized in that 2.6-dichloro-1-amino-4-nitrobenzene is diazotized and the diazo compound is treated with 1- n-butyl-3- oxy- 7 -methyl-tetrahydro ehinolin couples. The dye obtained dyes acetate silk in bluish brown shades.
CH188775D 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye. CH188775A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE188775X 1934-08-11
CH185944T 1935-05-07

Publications (1)

Publication Number Publication Date
CH188775A true CH188775A (en) 1937-01-15

Family

ID=25721290

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188775D CH188775A (en) 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH188775A (en)

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