CH162643A - Process for the preparation of a monoazo dye. - Google Patents

Process for the preparation of a monoazo dye.

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Publication number
CH162643A
CH162643A CH162643DA CH162643A CH 162643 A CH162643 A CH 162643A CH 162643D A CH162643D A CH 162643DA CH 162643 A CH162643 A CH 162643A
Authority
CH
Switzerland
Prior art keywords
preparation
monoazo dye
dye
amino
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 CH162643A publication Critical patent/CH162643A/en

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Description

  

  Verfahren zur Darstellung eines     Xonoazofarbstoffes.       Im Hauptpatent ist ein Farbstoff     besebrie-          bei),    der erhalten wird durch     Diazotieren    von       2-Amitio-4.6-dir)itro-l-oxyberizol    und Kuppeln  der     Diazoverbindung    mit     1-Amino-3-oxyäthyl-          aminobenzol.     



  Einen ähnlichen Farbstoff erhält man, wenn  man die genannte     Diazoverbindung    mit     1-          Methyl-2-ainino-        4-(fl-r-dioxypi-opyl)-        amino-          benzol    kuppelt, das erhalten werden kann  durch Kondensation von     1-Methyl-2.4-diamino-          benzol    mit     Monochlorhydrin,        Epieblorhydrin     oder dergleichen.

      <I>Beispiel:</I>       19,9Teile2-Amirto-4.6-dinitro-l-oxybenzol     werden mit<B>18</B> Teilen Salzsäure von 201 B6  und<B>6,9</B> Teilen     Natriumnitrit        diazotiert.    Dann       lässt    man die     Diazoverbindung    in eine salz  saure Lösung von<B>19,5</B> Teilen     1-Methyl-2-          amino-4-(fl-r-dioxypropyl)-aminobenzol    ein-    laufen, beendet die Kupplung durch Zugabe  von     Natriumacetat    und isoliert in üblicher  Weise. Der in guter Ausbeute anfallende  Farbstoff löst sich leicht und gibt auf Wolle  mit     Metachrombeize    ein tiefviolettes Braun  von guter Echtheit.



  Process for the preparation of a xonoazo dye. The main patent describes a dye which is obtained by diazotizing 2-Amitio-4,6-dir) itro-1-oxyberizole and coupling the diazo compound with 1-Amino-3-oxyethyl aminobenzene.



  A similar dye is obtained if the diazo compound mentioned is coupled with 1- methyl-2-ainino- 4- (fl-r-dioxypi-opyl) - aminobenzene, which can be obtained by condensation of 1-methyl-2.4- diamino-benzene with monochlorohydrin, epieblorohydrin or the like.

      <I> Example: </I> 19.9 parts of 2-amirto-4,6-dinitro-1-oxybenzene are mixed with <B> 18 </B> parts of hydrochloric acid from 201 B6 and <B> 6.9 </B> parts of sodium nitrite diazotized. The diazo compound is then allowed to run into a hydrochloric acid solution of 19.5 parts of 1-methyl-2-amino-4- (fl-r-dioxypropyl) aminobenzene, and the coupling is ended by addition of sodium acetate and isolated in the usual way. The dyestuff obtained in good yield dissolves easily and gives wool with metachrome stain a deep purple brown of good fastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Monoazo- farbstoffes, dadurch gekennzeichnet, dass man 2-Amitio-4.6-diiiitro-l-oxybenzol diazotiert und mit 1-Methyl-2-amino-4-(P.r-dioxypropyl)- aminobenzol kuppelt. Der Farbstoff gibt auf Wolle mit Metachrombeize ein tiefviolettes Braun von guter Echtheit. Claim: Process for the preparation of a monoazo dye, characterized in that 2-amino-4,6-diiiitro-1-oxybenzene is diazotized and coupled with 1-methyl-2-amino-4- (P.r-dioxypropyl) aminobenzene. The dye gives wool with metachrome stain a deep purple brown of good fastness.
CH162643D 1932-01-09 1932-04-26 Process for the preparation of a monoazo dye. CH162643A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE162643X 1932-01-09
CH160442T 1932-04-26

Publications (1)

Publication Number Publication Date
CH162643A true CH162643A (en) 1933-06-30

Family

ID=25717338

Family Applications (1)

Application Number Title Priority Date Filing Date
CH162643D CH162643A (en) 1932-01-09 1932-04-26 Process for the preparation of a monoazo dye.

Country Status (1)

Country Link
CH (1) CH162643A (en)

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