CH184782A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH184782A
CH184782A CH184782DA CH184782A CH 184782 A CH184782 A CH 184782A CH 184782D A CH184782D A CH 184782DA CH 184782 A CH184782 A CH 184782A
Authority
CH
Switzerland
Prior art keywords
azo dye
preparation
dye
diazotized
oxynaphthalene
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 CH184782A publication Critical patent/CH184782A/en

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Description

  

  Verfahren zur Herstellung eines     AzofarbstofFes.       Nach dem im Hauptpatent     beschriebenen     Verfahren erhält man einen für die     Woll-          färberei    geeigneten     Azofarbstoff,    wenn mal)       1(4-Oxy-        5-nitro-    3-     amin.ophenyl)-hexahydro-          benzol        diazotiert    und die     Diazoverbindung     mit     1-Acetamino-8-oxynaphthalin-4-sulfo-          säure    kuppelt.  



  Wie nun     weiter        befunden    wurde, erhält  man einen ähnlichen Farbstoff, wenn man       1(4-Oxy-5-nitro-3-aminophenyl)-hexahy4ro-          benzol    diazotiert und die     Diazoverbindung     mit     1-Oxynaphthalin-4-sulfosäure    kuppelt.  



       Beispiel:     Man     diazotiert    23,6 Teile     1(4-Oxy-5-          nitro-3-aminophenyl)-hegahydrobenzol    und  lässt die     Diazolösung    zu einer Lösung von 26  Teilen     1-Oxynaphthalin-4--sulfosäure    und 16    Teilen Soda bei 40   einlaufen. Nach been  deter Kombination     wird    der erhaltene Farb  stoff abgesaugt und     getrocknet.    Er löst sich  in Wasser mit     rotvioletter    Farbe. Mit     Meta-          chrombeize    gefärbt erhält man auf Wolle ein  dunkles Violett.



  Process for the production of an azo dye. The process described in the main patent gives an azo dye suitable for wool dyeing if 1 (4-oxy-5-nitro-3-amin.ophenyl) -hexahydrobenzene is diazotized and the diazo compound is diazotized with 1-acetamino-8 -oxynaphthalene-4-sulfonic acid couples.



  As has now been further found, a similar dye is obtained if 1 (4-oxy-5-nitro-3-aminophenyl) -hexahy4ro-benzene is diazotized and the diazo compound is coupled with 1-oxynaphthalene-4-sulfonic acid.



       Example: 23.6 parts of 1 (4-oxy-5-nitro-3-aminophenyl) -hegahydrobenzene are diazotized and the diazo solution is allowed to run into a solution of 26 parts of 1-oxynaphthalene-4-sulfonic acid and 16 parts of soda at 40%. After the combination has ended, the dye obtained is suctioned off and dried. It dissolves in water with a red-purple color. Dyed with metachrome stain gives wool a dark purple color.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man 1(4 - Oxy - 5 -nitro-3-aminophenyl)-hexahydro- benzol diazotiert und die Diazoverbindung mit 1-Oxynaphthalin-4-sulfosäure kuppelt. Der Farbstoff färbt Wolle in Gegenwart einer Chrombeize dunkelviolett. PATENT CLAIM: Process for the production of an azo dye, characterized in that 1 (4 - oxy - 5 -nitro-3-aminophenyl) -hexahydrobenzene is diazotized and the diazo compound is coupled with 1-oxynaphthalene-4-sulfonic acid. The dye dyes wool dark purple in the presence of a chrome stain.
CH184782D 1933-12-13 1934-11-12 Process for the preparation of an azo dye. CH184782A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE184782X 1933-12-13
CH183205T 1936-02-20

Publications (1)

Publication Number Publication Date
CH184782A true CH184782A (en) 1936-06-15

Family

ID=25720852

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184782D CH184782A (en) 1933-12-13 1934-11-12 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH184782A (en)

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