CH162911A - 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
CH162911A
CH162911A CH162911DA CH162911A CH 162911 A CH162911 A CH 162911A CH 162911D A CH162911D A CH 162911DA CH 162911 A CH162911 A CH 162911A
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 CH162911A publication Critical patent/CH162911A/en

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Description

  

  Verfahren zur Darstellung eines     wasserunlöslichen        Azofarbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Darstellung eines  wasserunlöslichen     Azofarbstoftes,    welches da  durch gekennzeichnet ist, dass man die     Diazo-          verbindung    von     1-Amino-3.5-bistrifluormethyl-          benzol    mit     2'.3'-Ogynaphtoyl-2-naphtylamin     kuppelt. Die Einwirkung der beiden Kompo  nenten 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  Rotorange von sehr guter Licht- und Wasch  echtheit.  



  <I>Beispiel:</I>  Zu einer in der üblichen Weise aus 22,9  Gewichtsteilen     1-Amino-3.5-bistrifluormethyl-          benzol    bereiteten     Diazolösung    fliesst langsam  unter gutem Rühren eine     natronalkalische     Lösung von 31,3 Gewichtsteilen     2'.3'-Ogy-          naphtoyl-2-naphtylamin,    welche mit der zur       Bindung    der überschüssigen Mineralsäure  nötigen Menge     Natriumacetat    versetzt ist.    Nach     Beendigung    der     Farbstoffbildung    wird       abfiltriert,    gut mit Wasser gewaschen und  getrocknet.

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



  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-bistrifluoromethylbenzene is coupled with 2'.3'-ogynaphtoyl-2-naphthylamine. The action of the two components on one another can also take place in the presence of a substrate.



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



  <I> Example: </I> To a diazo solution prepared in the usual way from 22.9 parts by weight of 1-amino-3,5-bistrifluoromethylbenzene, an alkaline sodium solution of 31.3 parts by weight of 2'.3'- slowly flows with thorough stirring. Ogynaphtoyl-2-naphthylamine, 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 preparation of the dye can also take place in the presence of a substrate. If the dye is produced on the fiber, a vivid red-orange with very good lightfastness and washfastness is obtained.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines wasser unlöslichen Azofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung von 1-Amino-3. 5-bistrifluormethylbenzol mit 2'.3' Ogynäphtoyl-2-naphtylamin kuppelt. Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein lebhaftes Rotorange von sehr guter Licht- und Wasch echtheit. Claim: Process for the preparation of a water-insoluble azo dye, characterized in that the diazo compound of 1-amino-3. Coupling 5-bistrifluoromethylbenzene with 2'.3 'Ogynäphtoyl-2-naphthylamine. The dye, which is produced in substance, forms an orange powder and, when produced on the fiber, provides a vivid red-orange with very good light and wash fastness.
CH162911D 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye. CH162911A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE162911X 1930-10-10
CH155781T 1931-10-08

Publications (1)

Publication Number Publication Date
CH162911A true CH162911A (en) 1933-07-15

Family

ID=25716654

Family Applications (1)

Application Number Title Priority Date Filing Date
CH162911D CH162911A (en) 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH162911A (en)

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