CH188774A - 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
CH188774A
CH188774A CH188774DA CH188774A CH 188774 A CH188774 A CH 188774A CH 188774D A CH188774D A CH 188774DA CH 188774 A CH188774 A CH 188774A
Authority
CH
Switzerland
Prior art keywords
azo dye
insoluble azo
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 CH188774A publication Critical patent/CH188774A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines unlöslichen     Azofarbstof%s.       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-Benzyl-3-oxy-tetrahydrochinolin     kuppelt.  



  <I>Beispiel:</I>  20,7 Teile     2.6-Dichlor-l-amino-4-nitro-          benzol    werden in der üblichen Weise     diazo-          tiert.    Die     Diazoverbindung        lässt    man in eine  eisgekühlte Lösung von 23,9 Teilen 1-Ben-         zyl-3-oxy-tetrahydrochinolin    in der entspre  chenden Menge     verdünnter    Salzsäure einlau  fen und stumpft zur Beendigung der     Kupp-          lung    mit     Natriumacetat    ab.

   Der erhaltene  Farbstoff färbt     Acetatseide    im     Seifensuspen-          sionsbad    blaustichig braun.



  Process for the preparation of an insoluble azo dye% s. 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 obtained with 1-butyl-3-oxy-7-chlorotetrahydroquinoline clutch.



  As has now also been found, 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-benzyl-3-oxy-tetrahydroquinoline.



  <I> Example: </I> 20.7 parts of 2,6-dichloro-1-amino-4-nitrobenzene are diazo- tated in the usual way. The diazo compound is allowed to run into an ice-cold solution of 23.9 parts of 1-benzyl-3-oxy-tetrahydroquinoline in the appropriate amount of dilute hydrochloric acid and blunted with sodium acetate to terminate the coupling.

   The dye obtained dyes acetate silk in the soap suspension bath with a bluish brown tinge.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines unlös lichen Azofarbstoffes, dadurch gekennzeich net, dass man 2.6-Diehlor-l-amino-4-nitro- benzol diazotiert und die Diazoverbindung mit 1-Benzyl-3-oxy-tetrahydrochinolin kup pelt. Der erhaltene Farbstoff färbt Acetatseide blaustichig braun. PATENT CLAIM: Process for the production of an insoluble azo dye, characterized in that 2.6-Diehlor-1-amino-4-nitrobenzene is diazotized and the diazo compound is coupled with 1-benzyl-3-oxy-tetrahydroquinoline. The dye obtained gives the acetate silk a bluish brown tint.
CH188774D 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye. CH188774A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE188774X 1934-08-11
CH185944T 1935-05-07

Publications (1)

Publication Number Publication Date
CH188774A true CH188774A (en) 1937-01-15

Family

ID=25721289

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188774D CH188774A (en) 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH188774A (en)

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