CH159072A - Process for the preparation of a water-soluble dye. - Google Patents

Process for the preparation of a water-soluble dye.

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Publication number
CH159072A
CH159072A CH159072DA CH159072A CH 159072 A CH159072 A CH 159072A CH 159072D A CH159072D A CH 159072DA CH 159072 A CH159072 A CH 159072A
Authority
CH
Switzerland
Prior art keywords
water
preparation
soluble dye
sulfonic acid
blue
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 CH159072A publication Critical patent/CH159072A/en

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Description

  

  Verfahren zur Darstellung eines wasserlöslichen     Farbstoffes.       Gegenstand des vorliegenden     Ztisatzpa-          tentes    ist ein Verfahren zur Darstellung eines  wasserlöslichen     Farbstoffes,    welches darin be  steht,     dass    man auf 2.     5-Di-(N-benzyl   <B>-</B>     carba-          zolyl-3'-amino)-3.6-dichlor-l.        4-benzochinon     ein     Sulfierungsmittel    einwirken     lässt.     



  <I>Beispiel:</I>  <B>50</B> Gewichtsteile 2.     5-Di-(N-benzyl-earba-          zolyl-S'-        amino)-3.        6-dichlor-1.4-ben2;ochinon     (erhältlich durch Kondensation von     Chloranil     mit     S-Amino-N-benzylearbazol)    und<B>500</B>     Ge-          wichtsteilen        20        %iges        Oleum        werden        zirka   <B>3</B>  Stunden auf<B>500</B>     C    erhitzt, danach auf Eis  und Wasser gegeben     und:

  filtriert.    Die zurück  bleibende     Farbstoffsulfosäure    wird erst mit       Kochsalzlösung    neutral, dann mit verdünnter  Salzsäure salzfrei gewaschen und getrocknet.  Sie stellt ein blaues Pulver dar, das sich in  Wasser mit blauer Farbe löst und Wolle,    Seide, Baumwolle,     Viscose,    gemischte Gewebe  und die Papierfaser entweder als freie     Sulfo-          säure    oder als     Alkalisalz    in schönen blauen  Tönen von hervorragender Lichtechtheit     an-          -färbt.  



  Process for the preparation of a water-soluble dye. The subject of the present additional patent is a process for the preparation of a water-soluble dye, which consists in that one on 2. 5-di- (N-benzyl <B> - </B> carbazolyl-3'-amino) -3.6-dichloro-l. 4-benzoquinone allows a sulphonation agent to act.



  <I> Example: </I> <B> 50 </B> parts by weight of 2.5-di- (N-benzyl-earba-zolyl-S'-amino) -3. 6-dichloro-1,4-ben2; oquinone (obtainable by condensation of chloranil with S-amino-N-benzylearbazole) and <B> 500 </B> parts by weight of 20% strength oleum become about <B> 3 </B> Heated to <B> 500 </B> C for hours, then poured onto ice and water and:

  filtered. The dye sulfonic acid that remains is first washed until neutral with sodium chloride solution, then with dilute hydrochloric acid until it is free of salt and dried. It is a blue powder that dissolves in water with a blue color and stains wool, silk, cotton, viscose, mixed fabrics and the paper fiber either as free sulfonic acid or as an alkali salt in beautiful blue tones of excellent lightfastness.

Claims (1)

<B>PATENTANSPRUCH:</B> Verfahren zur Darstellung eines wasser löslichen Farbstoffes, dadurch gekennzeichnet, dass man auf 2. 5-Di-(N-benzyl-carbazolyl-3'- amino)-3.6-dichlor-1.4-benzochinon ein Sul- flerungsmittel einwirken lässt. Die so erhalteneFarbstoffsulfosäurestellt ein blaues Pulver dar, das sich in Wasser mit blauer Farbe löst und Wolle, Seide, Baumwolle, Viscose, <B> PATENT CLAIM: </B> Process for the preparation of a water-soluble dye, characterized in that one uses 2. 5-di- (N-benzyl-carbazolyl-3'-amino) -3.6-dichloro-1,4-benzoquinone Lets sulphurizing agent act. The dye sulfonic acid thus obtained is a blue powder which dissolves in water with a blue color and produces wool, silk, cotton, viscose, gemischte Gewebe und die Papierfaser entweder als freieSulfosäure oder als Alkalisalz in schönen blauen Tönen von hervorragender Lichtechtheit anfärbt. UNTERANSPRVCHE: <B>1.</B> Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man als Sulflerungs- mittel 20%iges Oleum verwendet. 2. Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man die Reaktion bei <B>50 0 0</B> durchführt. dyes mixed fabrics and the paper fiber either as free sulfonic acid or as alkali salt in beautiful blue shades of excellent lightfastness. SUB-CLAIM: <B> 1. </B> Process according to patent claim, characterized in that 20% oleum is used as the sulphurizing agent. 2. The method according to claim, characterized in that the reaction is carried out at <B> 50 0 0 </B>.
CH159072D 1930-10-29 1931-10-28 Process for the preparation of a water-soluble dye. CH159072A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE159072X 1930-10-29
CH156123T 1931-10-28

Publications (1)

Publication Number Publication Date
CH159072A true CH159072A (en) 1932-12-15

Family

ID=25716713

Family Applications (1)

Application Number Title Priority Date Filing Date
CH159072D CH159072A (en) 1930-10-29 1931-10-28 Process for the preparation of a water-soluble dye.

Country Status (1)

Country Link
CH (1) CH159072A (en)

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