CH188772A - Process for the preparation of an insoluble azo dye. - Google Patents

Process for the preparation of an insoluble azo dye.

Info

Publication number
CH188772A
CH188772A CH188772DA CH188772A CH 188772 A CH188772 A CH 188772A CH 188772D A CH188772D A CH 188772DA CH 188772 A CH188772 A CH 188772A
Authority
CH
Switzerland
Prior art keywords
azo dye
insoluble azo
preparation
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 CH188772A publication Critical patent/CH188772A/en

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

Description

  

  Verfahren zur Herstellung eines unlöslichen     Azofarbstofes.       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     4-Nitro-l-äminobenzol          diazotiert    und die     Diazoverbindung    mit     1-          Benzyl    - 3 -     oxy    - 7 -     methyl        -tetrahydrochinolin     kuppelt.  



  <I>Beispiel:</I>  13,8 Teile     4-Nitro-l-aminobenzol    werden  in der üblichen Weise     diazotiert.    Die     Diazo-          verbindung        lässt    man in eine     eisgekühlte    Lö  sung von     2.5,3    Teilen 1-Benzyl-3-ogy-7-         methyl-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        rubinrot.  



  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 4-nitro-1-aminobenzene is diazotized and the diazo compound is coupled with 1-benzyl - 3 - oxy - 7 - methyl tetrahydroquinoline.



  <I> Example: </I> 13.8 parts of 4-nitro-1-aminobenzene are diazotized in the usual way. The diazo compound is allowed to run into an ice-cold solution of 2.5.3 parts of 1-benzyl-3-ogy-7-methyl-tetrahydroquinoline in the appropriate amount of dilute hydrochloric acid; and dulls to terminate the coupling with sodium acetate.

   The dye obtained dyes acetate silk ruby red in the soap suspension bath.

Claims (1)

PATENTANSPRUCE: Verfahren zur Herstellung eines unlös lichen Azofarbstoffes, dadurch gekennzeich net, dass man 4-Nitro-l-aminobenzol diazotiert und die Diazoverbindung mit 1-Benzyl-3- oxy-7-methyl-tetrahydrochinolin kuppelt. Der erhaltene Farbstoff färbt Acetatseide rubinrot. PATENT CLAIM: Process for the production of an insoluble azo dye, characterized in that 4-nitro-1-aminobenzene is diazotized and the diazo compound is coupled with 1-benzyl-3-oxy-7-methyl-tetrahydroquinoline. The dye obtained dyes acetate silk ruby red.
CH188772D 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye. CH188772A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE188772X 1934-08-11
CH185944T 1935-05-07

Publications (1)

Publication Number Publication Date
CH188772A true CH188772A (en) 1937-01-15

Family

ID=25721287

Family Applications (1)

Application Number Title Priority Date Filing Date
CH188772D CH188772A (en) 1934-08-11 1935-05-07 Process for the preparation of an insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH188772A (en)

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