CH198343A - Process for the preparation of a dioxazine dye sulfonic acid. - Google Patents

Process for the preparation of a dioxazine dye sulfonic acid.

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Publication number
CH198343A
CH198343A CH198343DA CH198343A CH 198343 A CH198343 A CH 198343A CH 198343D A CH198343D A CH 198343DA CH 198343 A CH198343 A CH 198343A
Authority
CH
Switzerland
Prior art keywords
sulfonic acid
preparation
dioxazine dye
condensation
sulfuric acid
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 CH198343A publication Critical patent/CH198343A/en

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Description

  

  Verfahren zur Darstellung einer     Diogazinfarbstoffsulfosäure.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung einer     Dioxazin-          farbstoffsulfosäure,    welches dadurch gekenn  zeichnet ist, dass man das aus zwei     lIol        4-          A.minodiphenyl-    3 -     sulfosäure    und ein     Mo1          Chloranil    durch Kondensation in Alkohol  erhältliche Produkt mit einem Kondensations  mittel behandelt.  



  <I>Beispiel:</I>  50 Gewichtsteile des Kondensationspro  duktes auf     4-Amino-diphenyl-3-sulfosäur-e     und     Chloranil    werden in 1000 Gewichtsteilen       Schwefelsäuremonohydrat    eingetragen und ge  löst. Darauf wird die Temperatur gesteigert,  bis eine in Wasser gegossene Probe nicht  mehr braun, sondern rötlich erscheint. Man  hält die Temperatur etwa 2 Stunden. Die  Reaktionsmasse wird nach dem Erkalten auf  Eis gegeben,     ausgesalzen,        abfiltriert    und ge  trocknet. Der     Farbstoff    stellt ein rötliches,  in Wasser mit roter Farbe lösliches Pulver  dar, das Baumwolle und Viskose in roten  Tönen färbt.

   Die Lösungsfarbe in konzen-         trierter    Schwefelsäure ist blaugrün. Zweck  mässig gibt man beim Färben eine kleine  Menge eines Oxydationsmittels hinzu.



  Process for the preparation of a diogazine dye sulfonic acid. The subject of this additional patent is a process for the preparation of a dioxazine dye sulfonic acid, which is characterized in that the product obtainable from two lIol 4-aminodiphenyl 3-sulfonic acid and a mol chloranil by condensation in alcohol is treated with a condensation agent.



  <I> Example: </I> 50 parts by weight of the condensation product based on 4-amino-diphenyl-3-sulfonic acid and chloranil are added to 1000 parts by weight of sulfuric acid monohydrate and dissolved. The temperature is then increased until a sample poured into water no longer appears brown but reddish. The temperature is kept for about 2 hours. After cooling, the reaction mass is poured onto ice, salted out, filtered off and dried. The dye is a reddish powder, soluble in water with a red color, which dyes cotton and viscose in red tones.

   The color of the solution in concentrated sulfuric acid is blue-green. It is advisable to add a small amount of an oxidizing agent when dyeing.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung einer Diozazin- farbstoffsulfosäure, dadurch gekennzeichnet, dass man das aus zwei Mol 4-Aminodiphe- nyl-3-sulfosäure und ein Mol Chloranil durch Kondensation in Alkohol erhältliche Produkt mit einem Kondensationsmittel behandelt. Der so erhaltene Farbstoff stellt einröt liches, in Wasser mit roter Farbe lösliches Pulver dar, das Baumwolle und Viskose in roten Tönen anfärbt. Die Lösungsfarbe in konzentrierter Schwefelsäure ist blaugrün. Claim: Process for the preparation of a diozazine dye sulfonic acid, characterized in that the product obtainable from two moles of 4-aminodiphenyl-3-sulfonic acid and one mole of chloranil by condensation in alcohol is treated with a condensation agent. The dyestuff thus obtained is a reddish, water-soluble powder that dyes cotton and viscose in red tones. The solution color in concentrated sulfuric acid is blue-green. <B>UNTERANSPRUCH:</B> Verfahren nach Patentanspruch, dadurch irekennzeichnet, dass man als Kondensations mittel Schwefelsäuremonohydrat verwendet. <B> SUBCLAIM: </B> Method according to patent claim, characterized in that sulfuric acid monohydrate is used as the condensation agent.
CH198343D 1935-01-23 1936-01-22 Process for the preparation of a dioxazine dye sulfonic acid. CH198343A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE198343X 1935-01-23
CH186848T 1935-07-26

Publications (1)

Publication Number Publication Date
CH198343A true CH198343A (en) 1938-06-15

Family

ID=25721446

Family Applications (1)

Application Number Title Priority Date Filing Date
CH198343D CH198343A (en) 1935-01-23 1936-01-22 Process for the preparation of a dioxazine dye sulfonic acid.

Country Status (1)

Country Link
CH (1) CH198343A (en)

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