CH162910A - 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
CH162910A
CH162910A CH162910DA CH162910A CH 162910 A CH162910 A CH 162910A CH 162910D A CH162910D A CH 162910DA CH 162910 A CH162910 A CH 162910A
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 CH162910A publication Critical patent/CH162910A/en

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Description

  

  Verfahren zur Darstellung eines     wasserunlöslichen        Azofarbstoffes.       Gegenstand des vorliegenden Zusatzpa  tentes ist ein Verfahren zur Darstellung  eines wasserunlöslichen     Azofarbstoffes,    welches  dadurch gekennzeichnet ist, dass man die       Diazoverbindung    von     1-Amino-3.5-bistrifluor-          methylbenzol    mit     2'.3'-Ogynaphtoyl-l-amino-          2-methyl-4-chlorbenzol    kuppelt. Die Einwir  kung 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  Rotorange von sehr guter Licht- und Wasch  echtheit.    <I>Beispiel:</I>  Zu einer in der üblichen Weise aus 22,9  Gewichtsteilen     1-Ainino-3.5-bistrifluormethyl-          benzol    bereiteten     Diazolösung    fliesst langsam  unter gutem Rühren eine     natronalkalische     Lösung von 31,2 Gewichtsteilen     2'.3'-Oxy-          naphtoyl-l-amino-2-methyl-4-chlorbenzol,    wel  che mit der zur Bindung der überschüssigen  Mineralsäure nötigen Menge     Natriumacetat       versetzt ist.

   Nach Beendigung der Farbstoff  bildung 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 with 2'.3'-ogynaphtoyl-1-amino-2-methyl- 4-chlorobenzene 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 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 31.2 parts by weight of 2'.3'- flows slowly with thorough stirring. Oxynaphtoyl-1-amino-2-methyl-4-chlorobenzene, which is mixed with the amount of sodium acetate necessary to bind the excess mineral acid.

   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' Oxynaphtoyl-l-amino-2-methyl-4-chlorbenzol 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 'oxynaphtoyl-1-amino-2-methyl-4-chlorobenzene. 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.
CH162910D 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye. CH162910A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE162910X 1930-10-10
CH155781T 1931-10-08

Publications (1)

Publication Number Publication Date
CH162910A true CH162910A (en) 1933-07-15

Family

ID=25716653

Family Applications (1)

Application Number Title Priority Date Filing Date
CH162910D CH162910A (en) 1930-10-10 1931-10-08 Process for the preparation of a water-insoluble azo dye.

Country Status (1)

Country Link
CH (1) CH162910A (en)

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