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CH162914A - 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
CH162914A
CH162914A CH162914DA CH162914A CH 162914 A CH162914 A CH 162914A CH 162914D A CH162914D A CH 162914DA CH 162914 A CH162914 A CH 162914A
Authority
CH
Switzerland
Prior art keywords
water
preparation
azo dye
insoluble azo
amino
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 CH162914A publication Critical patent/CH162914A/en

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Description

  

  Verfahren mir     DarstellInng    eines wasserunlöslichen     Azofarbstoffes.       Gegenstand des vorliegenden Zusatzpaten  tes ist ein Verfahren zur Darstellung eines  wasserunlöslichen     Azofarbstoffes,    welches da  durch gekennzeichnet ist,     dass    man die     Diazo-          verbindung    von     1-Amino-2.5-bistrifluormethyl-          benzol    mit 2'.     3'-Oxynaphtoyl-l-amino-4-chlor-          benzol    kuppelt. Die Einwirkung der beiden  Komponenten aufeinander kann auch in Ge  genwart eines     Sabstrates    erfolgen.  



  Der in Substanz hergestellte Farbstoff  bildet ein orangefarbenes Pulver und liefert,  wenn     auf    der Faser erzeugt, ein Orangegelb  von guten Echtheitseigenschaften.  



  <I>Beispiel:</I>  Zu einer in der üblichen Weise aus<B>22,9</B>  Gewichtsteilen     1-Amino-2.5-bistriffnormethyl-          benzol    bereiteten     Diazolösung    fliesst langsam  unter gutem Rühren eine     natronalkalische    Lö  sung von<B>29,8</B> Gewichtsteilen 2'.     S'-        Oxynaph-          toyl-l-amino-4-ohlorbenzol,    welche mit der  zur Bindung der überschüssigen Mineralsäure    nötigen Menge     Natriumacetat    versetzt ist.  Nach Beendigung der     Farbstoffbildung    wird       abfiltriert,    gut mit Wasser gewaschen und ge  trocknet.

   Die Darstellung des Farbstoffes kann  auch in Gegenwart     eineä    Substrates erfolgen.  Wird der Farbstoff auf der Faser erzeugt, so  erhält man ein Orangegelb von guten Echt  heitseigenschaften.



  Method with the preparation of a water-insoluble azo dye. The subject of the present additional patent is a process for the preparation of a water-insoluble azo dye, which is characterized in that the diazo compound of 1-amino-2,5-bistrifluoromethylbenzene is 2 '. 3'-Oxynaphtoyl-1-amino-4-chlorobenzene couples. The action of the two components on each other can also take place in the presence of a Sabstrat.



  The dye produced in substance forms an orange-colored powder and, when produced on the fiber, provides an orange-yellow with good fastness properties.



  <I> Example: </I> To a diazo solution prepared in the usual way from <B> 22.9 </B> parts by weight of 1-amino-2,5-bis-triffnormethylbenzene, a sodium-alkaline solution of <B slowly flows with thorough stirring > 29.8 </B> parts by weight 2 '. S'-oxynaphthoyl-l-amino-4-chlorobenzene, to which the amount of sodium acetate necessary to bind the excess mineral acid is added. When the dye has formed, it is filtered off, washed well with water and dried.

   The dye can also be prepared in the presence of a substrate. If the dye is generated on the fiber, an orange-yellow with good authenticity properties is obtained.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wasser unlöslichen Azofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung von 1-Amino-2.6-bistrifluormethylbenzol mit 2'. 3'- Oxynaphtoyl-l-amino-4-chlorberizol kuppelt. Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein Orangegelb -vor) guten Echtheitseigenschaften. Claim: Process for the preparation of a water-insoluble azo dye, characterized in that the diazo compound of 1-amino-2,6-bistrifluoromethylbenzene with 2 '. 3'-Oxynaphtoyl-1-amino-4-chlorberizole couples. The dyestuff produced in substance forms an orange-colored powder and, if produced on the fiber, provides an orange-yellow - before) good fastness properties.
CH162914D 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye. CH162914A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE162914X 1930-10-10
CH155781T 1931-10-08

Publications (1)

Publication Number Publication Date
CH162914A true CH162914A (en) 1933-07-15

Family

ID=25716657

Family Applications (1)

Application Number Title Priority Date Filing Date
CH162914D CH162914A (en) 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH162914A (en)

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