CH170919A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

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Publication number
CH170919A
CH170919A CH170919DA CH170919A CH 170919 A CH170919 A CH 170919A CH 170919D A CH170919D A CH 170919DA CH 170919 A CH170919 A CH 170919A
Authority
CH
Switzerland
Prior art keywords
aminobenzene
preparation
azo dye
parts
dye
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 CH170919A publication Critical patent/CH170919A/en

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Description

  

  Verfahren zur Darstellung eines     Azofarbstoffes.       Nach dem im Hauptpatent beschriebenen  Verfahren erhält man einen blauen Acetat  seidenfarbstoff, wenn man     diazotiertes    6  Brom - 2. 4 -     dinitro    - 1-     aminobenzol    mit 1  Aminonaplit.halin kuppelt.  



  Wie nun weiter gefunden wurde, er  hält man einen Farbstoff mit. ganz ähnlichen  Eigenschaften, wenn man 6 - Chlor<B>-2)</B> . 4 -     di-          nitro    - 1 -     aminobenzol        diazotiert    und mit  1 -     31ethyl    - 3 -     di    -     (oxyäthyl)    -     aminobenzol     kuppelt.  



       Beispiel     Man bereitet eine     Diazolösung,    indem  man bei 50 bis     e60     <B>22.</B> Teile 6 -Chlor -     \?    .     4-          dinitro    - 1 -     aminobenzol    in durch     Eintragen     von 6,9 Teilen     Natriumnitrit    in 120 Teile       konz.    Schwefelsäure bereitete     Nitrosyl-          sehwefelsäure    einrührt und die Masse hier  auf durch     Aufgiessen    auf Eis stark verdünnt.

    Die filtrierte schwefelsaure     Diazolösung    läuft    in eine kalte Lösung von 19,5 Teilen 1  Methyl-3-di-(oxyäthyl)-aminobenzol in 500  Teilen Wasser und 11 Teilen Salzsäure     2#3'B6     ein. Man stumpft mit so viel     Natriumacetat     ab, dass die Kupplung im Verlauf von einigen  Stunden beendet ist. Der Farbstoff wird wie  üblich aufgearbeitet. Er färbt     Acetatseide     lichtecht rötlich dunkelviolett an.



  Process for the preparation of an azo dye. According to the process described in the main patent, a blue acetate silk dye is obtained when diazotized 6 bromine - 2, 4 - dinitro - 1 - aminobenzene is coupled with 1 aminonaplit.halin.



  As has now been found further, he keeps a dye with him. very similar properties if you have 6 - chlorine <B> -2) </B>. 4 - di - nitro - 1 - aminobenzene diazotized and coupled with 1 - 31ethyl - 3 - di - (oxyethyl) - aminobenzene.



       Example A diazo solution is prepared by adding <B> 22. </B> parts 6 -chlorine - \? At 50 to e60. . 4-dinitro - 1 - aminobenzene in by adding 6.9 parts of sodium nitrite in 120 parts of conc. Nitrosylsulfuric acid prepared with sulfuric acid is stirred in and the mass is strongly diluted here by pouring it onto ice.

    The filtered sulfuric acid diazo solution runs into a cold solution of 19.5 parts of 1-methyl-3-di- (oxyethyl) -aminobenzene in 500 parts of water and 11 parts of hydrochloric acid 2 # 3'B6. It is blunted with enough sodium acetate that the coupling is complete within a few hours. The dye is worked up as usual. It stains acetate silk, lightfast, reddish, dark purple.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Acetat seide lichtecht in rötlich dunkelvioletten Tö nen anfärbenden Farbstoffes, dadurch ge kennzeichnet, dass' man 6 - Chlor - 2 . 4 - di- nitro - 1 - aminobenzol diazotiert und die Diazoverbindung mit 1- Methyl - 3 - di - (oxy- äthyl) - aminobenzol kuppelt. PATENT CLAIM: Process for the production of an acetate silk lightfast in reddish dark violet tones coloring dye, characterized in that 'one 6 - chlorine - 2. 4 - di - nitro - 1 - aminobenzene is diazotized and the diazo compound is coupled with 1 - methyl - 3 - di - (oxyethyl) - aminobenzene.
CH170919D 1932-07-08 1933-04-27 Process for the preparation of an azo dye. CH170919A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE170919X 1932-07-08
CH168144T 1933-04-27

Publications (1)

Publication Number Publication Date
CH170919A true CH170919A (en) 1934-07-31

Family

ID=25718519

Family Applications (1)

Application Number Title Priority Date Filing Date
CH170919D CH170919A (en) 1932-07-08 1933-04-27 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH170919A (en)

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