CH139506A - Process for the preparation of a chromium-containing azo dye. - Google Patents

Process for the preparation of a chromium-containing azo dye.

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Publication number
CH139506A
CH139506A CH139506DA CH139506A CH 139506 A CH139506 A CH 139506A CH 139506D A CH139506D A CH 139506DA CH 139506 A CH139506 A CH 139506A
Authority
CH
Switzerland
Prior art keywords
chromium
preparation
azo dye
containing 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 CH139506A publication Critical patent/CH139506A/en

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Description

  

  Verfahren zur Darstellung eines     ehromhaltigen        Azofarbstoffes.       Es wurde     gefunden,    dass man einen     chrom-          haltigen        Azofarbstoff    erhält, wenn man den       o-Oxyazofai#b,etoff    aus der dianotierten     4-Nitro-          2-aminophenol-6-sulfosäLii#e    und     Acetylaceton     mit einer Verbindung des dreiwertigen Chroms  behandelt.  



  Der neue Farbstoff löst sich in Wasser  und konzentrierter Schwefelsäure mit orange  gelber Farbe und färbt Wolle in wasch- und  lichtechten gelborangen Tönen.  



  <I>Beispiel:</I>       Man    kocht 36,6 Teile des     Azofarbstoffes     aus dianotierter     4-Nitro-2-aminophenol-6-sulfo-          säure    und     Acetylaceton    in wässeriger Lösung  mit 14 Teilen     Chromfluorid    einige Stunden  lang     unter        Rückfluss    und salzt aus.    Der chromhaltige     Farbstoff    kann auch  zum Beispiel unter Anwendung von     Chrom-          formiat    hergestellt werden.



  Process for the preparation of an azo dye containing Ehrom. It has been found that a chromium-containing azo dye is obtained if the o-oxyazofai # b, etoff from the dianotized 4-nitro-2-aminophenol-6-sulfosalene and acetylacetone is treated with a compound of trivalent chromium.



  The new dye dissolves in water and concentrated sulfuric acid with an orange-yellow color and dyes wool in washable and lightfast yellow-orange tones.



  <I> Example: </I> 36.6 parts of the azo dye from dianotized 4-nitro-2-aminophenol-6-sulfonic acid and acetylacetone in aqueous solution with 14 parts of chromium fluoride are refluxed for a few hours and salted out. The chromium-containing dye can also be produced, for example, using chromium formate.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines chrom haltigem Azofarbstoffes, dadurch gekennzeich net, dass man den o-Oxyazofarbstoff aus der dianotierten 4-IVTitro-2-aniinophenol-6-sulfo- säure und Acetylaceton mit einer Verbindung des dreiwertigen Chroms behandelt. Der neue Farbstoff löst sich in Wasser und konzentrierter Schwefelsäure mit orange gelber Farbe und färbt Wolle in wasch- und lichtechten gelborangen Tönen. Claim: Process for the preparation of a chromium-containing azo dye, characterized in that the o-oxyazo dye from the dianotized 4-IV-nitro-2-aniinophenol-6-sulfonic acid and acetylacetone is treated with a compound of trivalent chromium. The new dye dissolves in water and concentrated sulfuric acid with an orange-yellow color and dyes wool in washable and lightfast yellow-orange tones.
CH139506D 1927-12-01 1928-10-31 Process for the preparation of a chromium-containing azo dye. CH139506A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE139506X 1927-12-01

Publications (1)

Publication Number Publication Date
CH139506A true CH139506A (en) 1930-04-30

Family

ID=5667799

Family Applications (1)

Application Number Title Priority Date Filing Date
CH139506D CH139506A (en) 1927-12-01 1928-10-31 Process for the preparation of a chromium-containing azo dye.

Country Status (1)

Country Link
CH (1) CH139506A (en)

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