CH157555A - Process for the preparation of a water-insoluble azo dye. - Google Patents

Process for the preparation of a water-insoluble azo dye.

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Publication number
CH157555A
CH157555A CH157555DA CH157555A CH 157555 A CH157555 A CH 157555A CH 157555D A CH157555D A CH 157555DA CH 157555 A CH157555 A CH 157555A
Authority
CH
Switzerland
Prior art keywords
preparation
water
insoluble azo
azo dye
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 CH157555A publication Critical patent/CH157555A/en

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

Description

       

  Verfahren zur Darstellung eines wasserunlöslichen     Azofarbstoffes.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines wasserunlös  lichen     Azofarbstoffes,    das dadurch gekenn  zeichnet ist, dass man die     Diazoverbindung     von     m-Chloranilin    mit Terephtaloyl-bis-essig       säure-l-amino-4-chlor-2-methoxy-5-methylben-          zol    kuppelt. Die Einwirkung der beiden Kom  ponenten aufeinander kann auch in Gegen  wart eines Substrates erfolgen.  



  Der in Substanz hergestellte     Farbstoff     bildet ein     grünstichig    gelbes Pulver; die Fär  bungen besitzen einen lebhaften,     grünstichig     gelben Farbton und sind sehr gut lichtecht.  <I>Beispiel:</I>  <B>53,3</B>     gr        Terephtaloyl    -bis -     essigsäure    -1  amino-4-chlor-2-methogy-5-methylbenzol wer  den in 100     emu    doppelt normaler Natron  lauge und Wasser heiss gelöst.

   Diese Lösung  läuft zu einer wie folgt bereiteten     Diazo-          lösung    : 25,6     gr        m-Chloranilin    werden mit  52 cm' Salzsäure von 22       B6    und 14,4     gr          Natriumnitrit    unter Eiszusatz wie üblich     dia-          zotiert    und mit     Natriumacetat    auf Kongo  neutralität abgestumpft.    Die     Farbstoffbildung    ist nach mehrstün  digem     Nachrühren    beendet. Man saugt ab,  wäscht gut mit Wasser und trocknet.  



  Man erhält ein     grünstichig    gelbes Pulver.  Die Darstellung des Farbstoffes kann auch  in Gegenwart eines Substrates erfolgen. Wird  der Farbstoff auf der Faser erzeugt, so er  hält man einen sehr lichtechten, lebhaften,       grünstichig    gelben Farbton.



  Process for the preparation of a water-insoluble azo dye. The subject of this additional patent is a process for the preparation of a water-insoluble azo dye, which is characterized in that the diazo compound of m-chloroaniline with terephtaloyl-bis-acetic acid-l-amino-4-chloro-2-methoxy-5-methylbene - zol couples. The action of the two components on one another can also take place in the presence of a substrate.



  The dye produced in substance forms a greenish yellow powder; the colors have a lively, greenish yellow hue and are very lightfast. <I> Example: </I> <B> 53.3 </B> gr terephtaloyl-bis-acetic acid -1 amino-4-chloro-2-methogy-5-methylbenzene are mixed in 100 emu of double normal sodium hydroxide and Hot water dissolved.

   This solution runs into a diazo solution prepared as follows: 25.6 g of m-chloroaniline are diazotized as usual with 52 cm 2 of hydrochloric acid of 22 B6 and 14.4 g of sodium nitrite with the addition of ice and blunted to Congo neutrality with sodium acetate. The dye formation is complete after several hours of stirring. It is suctioned off, washed well with water and dried.



  A greenish yellow powder is obtained. The preparation of the dye can also take place in the presence of a substrate. If the dye is produced on the fiber, it is kept in a very lightfast, lively, greenish yellow color.


    

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wasser unlöslichen Azofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung von m-Chloranilin mit Terephtaloyl-bis-essigsäure- 1- amino -4- chlor- 2-methoxy- 5-methylbenzol kuppelt. Der in Substanz hergestellte Farbstoff bildet ein grünstichig gelbes Pulver; die Fär bungen besitzen einen lebhaften, grünstichig gelben Farbton und sind sehr gut lichtecht. PATENT CLAIM: Process for the preparation of a water-insoluble azo dye, characterized in that the diazo compound of m-chloroaniline is coupled with terephtaloyl-bis-acetic acid 1- amino -4-chloro-2-methoxy-5-methylbenzene. The dye produced in substance forms a greenish yellow powder; the colors have a lively, greenish yellow hue and are very lightfast.
CH157555D 1930-09-09 1931-05-07 Process for the preparation of a water-insoluble azo dye. CH157555A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE157555X 1930-09-09
CH153828T 1931-05-07

Publications (1)

Publication Number Publication Date
CH157555A true CH157555A (en) 1932-09-30

Family

ID=25716315

Family Applications (1)

Application Number Title Priority Date Filing Date
CH157555D CH157555A (en) 1930-09-09 1931-05-07 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH157555A (en)

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