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CH162908A - 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
CH162908A
CH162908A CH162908DA CH162908A CH 162908 A CH162908 A CH 162908A CH 162908D A CH162908D A CH 162908DA CH 162908 A CH162908 A CH 162908A
Authority
CH
Switzerland
Prior art keywords
preparation
water
azo dye
insoluble azo
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 CH162908A publication Critical patent/CH162908A/en

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Description

  

  Verfahren zur Darstellung eines     wasserunlösliehen        Azofarbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Darstellung     bines          wasserunlöslichen,Azofarbstoffes,    welches da-,  durch gekennzeichnet ist,     dass    man die     Diazo-          verbindung    von     1-Amino-3.5-bistriflLiormethyl-          benzol    mit 2.     3'-Oxynaphthoyl   <B>- 1 -</B>     amino-2-          methoxybenzol    kuppelt.

   Die Einwirkung der  beiden Komponenten aufeinander kann auch  in Gegenwart eines Substrates erfolgen.  



  Der in Substanz hergestellte Farbstoff  bildet ein orangefarbenes Pulver und liefert,  wenn auf der Faser erzeugt, ein lebhaftes  Orange von sehr guter Licht- und Wasch  echtheit.  



  <I>Beispiel:</I>  Zu einer in der üblichen Weise aus<B>22,9</B>  Gewichtsteilen     1-Amino-3.5-bistrifluormethyl-          benzol    bereiteten     Diazolbsung    fliesst langsam  unter gutem Rühren eine     natronalkalisebe     Lösung von<B>29,5</B> Gewichtsteilen     2'.3'-Oxy-          naphtoyl-l-amino-2-methoxybenzol,    welche  mit der zur Bindung der überschüssigen  Mineralsäure nötigen Menge     Natriumacetat     versetzt ist. Nach Beendigung der Farbstoff-         bildung    wird     abfiltriert,    gut mit Wasser ge  waschen Lind getrocknet. Die.

   Darstellung des  Farbstoffes kann auch in Gegenwart eines  Substrates erfolgen. Wird der Farbstoff auf  der Faser erzeugt, so erhält man ein lebhaftes  Orange von sehr guter Licht- und Wasch  echtheit.



  Process for 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-3,5-bistriflLiormethylbenzene with 2,3'-oxynaphthoyl <B> - 1 - amino-2-methoxybenzene couples.

   The two components can also act on one another in the presence of a substrate.



  The dye, which is produced in substance, forms an orange-colored powder and, when produced on the fiber, provides a lively orange with very good light and wash fastness.



  <I> Example: </I> To a diazole solution prepared in the usual way from <B> 22.9 </B> parts by weight of 1-amino-3,5-bistrifluoromethylbenzene, a sodium-alkaline solution of <B> slowly flows with thorough stirring 29.5 parts by weight of 2'.3'-oxynaphtoyl-1-amino-2-methoxybenzene, 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.

   The dye can also be prepared in the presence of a substrate. If the dye is produced on the fiber, a vivid orange with very good lightfastness and washfastness is obtained.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines unlöslichen Azofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung von 1-Amino-3.5-bistrifluormethylbenzol mit 2'.3'- Oxynaphtoyl <B>- 1 -</B> amino-2-methoxybenzol kup pelt. Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein lebhaftes Orange von sehr gutQr Licht- und Wasch echtheit. PATENT CLAIM: A process for the preparation of an insoluble azo dye, characterized in that the diazo compound of 1-amino-3,5-bistrifluoromethylbenzene is coupled with 2'.3'-oxynaphtoyl-1-amino-2-methoxybenzene . The dye, which is produced in substance, forms an orange-colored powder and, when produced on the fiber, provides a vivid orange with very good lightfastness and washfastness.
CH162908D 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye. CH162908A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE162908X 1930-10-10
CH155781T 1931-10-08

Publications (1)

Publication Number Publication Date
CH162908A true CH162908A (en) 1933-07-15

Family

ID=25716651

Family Applications (1)

Application Number Title Priority Date Filing Date
CH162908D CH162908A (en) 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH162908A (en)

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