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CH162912A - 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
CH162912A
CH162912A CH162912DA CH162912A CH 162912 A CH162912 A CH 162912A CH 162912D A CH162912D A CH 162912DA CH 162912 A CH162912 A CH 162912A
Authority
CH
Switzerland
Prior art keywords
water
preparation
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 CH162912A publication Critical patent/CH162912A/en

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Description

  

  Verfahren zur Darstellung     eines    wasserunlöslichen     Äzofarbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Darstellung eines  wasserunlöslichen     Azofarbstoffes,    welches da  durch gekennzeichnet ist, dass man die     Diazo-          verbindung    von     1-Amino-3.5-bistrifluormethyl-          benzol    mit     2'.3'-Oxynaphtoyl-l-amino-3-riitro-          benzol    kuppelt. Die Einwirkung der beiden  Komponenten aufeinander kann auch in Ge  genwart eines Substrates erfolgen.  



  Der in     Substanz    hergestellte Farbstoff  bildet ein orangefarbenes Pulver und liefert,  wenn auf der Faser erzeugt, ein lebhaftes  Goldgelb 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 30,8 Gewichtsteilen     2'.3'-Oxy-          naphtoyl-l-amino-3-nitrobenzol,    welche mit  der zur Bindung der überschüssigen Mineral  säure nötigen Menge     Natriumacetat    versetzt    ist.

   Nach Beendigung der     Farbstoffbildung     wird     abfiltriert,    gut mit Wasser gewaschen  und getrocknet. Die Darstellung des Farb  stoffes kann auch in. Gegenwart eines Sub  strates erfolgen. Wird der-     Farbstoff    auf der  Faser erzeugt, so erhält     man    ein lebhaftes  Goldgelb 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-bistrifluoromethylbenzene with 2'.3'-oxynaphtoyl-1-amino-3 -riitro- benzene 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 vivid golden yellow 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 30.8 parts by weight of 2'.3'- flows slowly with thorough stirring. Oxynaphtoyl-1-amino-3-nitrobenzene, which is mixed with the amount of sodium acetate necessary to bind the excess mineral acid.

   After the formation of the dye has ended, it is filtered off, washed well with water and dried. The representation of the dye can also take place in the presence of a substrate. If the dye is generated on the fiber, a vivid golden yellow of very good light and wash fastness is obtained.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines waRser- unlöslichen Azofarbstoffes, dadurch gekenn zeichnet, dass man die Diazoverbindung von 1-Amino-3. 5-bistr-ifluormethylbenzol mit 2'.3'- Oxynaphtoyl-l-amino-3-nitrobenzol kuppelt. Der in Substanz hergestellte Farbstoff bildet ein orangefarbenes Pulver und liefert, wenn auf der Faser erzeugt, ein lebhaftes Goldgelb von sehr guter Licht- und Wasch echtheit. PATENT CLAIM: Process for the preparation of a water-insoluble azo dye, characterized in that the diazo compound of 1-amino-3. Coupling 5-bis-ifluoromethylbenzene with 2'.3'-oxynaphtoyl-1-amino-3-nitrobenzene. The dye, which is produced in substance, forms an orange-colored powder and, when produced on the fiber, provides a vivid golden yellow with very good light and wash fastness.
CH162912D 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye. CH162912A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE162912X 1930-10-10
CH155781T 1931-10-08

Publications (1)

Publication Number Publication Date
CH162912A true CH162912A (en) 1933-07-15

Family

ID=25716655

Family Applications (1)

Application Number Title Priority Date Filing Date
CH162912D CH162912A (en) 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH162912A (en)

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