CH184191A - Process for the preparation of a dye of the dioxazine series. - Google Patents

Process for the preparation of a dye of the dioxazine series.

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Publication number
CH184191A
CH184191A CH184191DA CH184191A CH 184191 A CH184191 A CH 184191A CH 184191D A CH184191D A CH 184191DA CH 184191 A CH184191 A CH 184191A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
obtainable
sulfonic acid
dioxazine series
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 CH184191A publication Critical patent/CH184191A/en

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Description

  

  Verfahren zur Darstellung eines Farbstoffes der     Diogazinreilie.       Gegenstand dieses Zusatzpatentes ist ein  Verfahren zur Darstellung eines Farbstoffes  der     Dioxazinreihe,    welches dadurch gekenn  zeichnet ist, dass man das durch Kondensa  tion von 2     Mol        4-Amino-azobenzol-4'-sulfo-          säure    und 1     Mol        Chloranil    erhältliche     Di-          arylaminochinon    mit starker Schwefelsäure  erhitzt.  



  <I>Beispiel:</I>  10     Gewichtsteile    des durch Kondensation  von 4 -     Amino    -     azobenzol    -     4'-sulfosäure    und       Chloranil    in wässerigem Alkohol erhältlichen  Zwischenproduktes werden in 200 Gewichts  teilen 5%igem     Oleum    zirka 1 Stunde bei  <B>150'</B> C verrührt, wobei neben dem Ring  schluss auch     Sulfierung    des     Dioxazinfarbstof-          fes    erfolgt. Nach dem Abkühlen gibt man  auf Eis, saugt ab und wäscht, mit Kochsalz  lösung neutral.

   Zur vollständigen     überfüh-          rung    der     Stilfosäure    in das     1NTatritimsalz        ver-          rührt    man einige Zeit mit verdünnter Na  triumchloridlösung unter Zusatz von Soda,  saugt ab und wäscht abermals mit     Natrium-          clilori,ilösung    neutral. Der Farbstoff löst sich  in Wasser mit     rotstichig    blauer Farbe und    färbt die tierische, pflanzliche und Viskose  faser in blauen Tönen an.



  Process for the preparation of a dye of the Diogazinreilie. The subject of this additional patent is a process for the preparation of a dye of the dioxazine series, which is characterized in that the diarylaminoquinone obtainable by condensation of 2 moles of 4-aminoazobenzene-4'-sulfonic acid and 1 mole of chloranil is obtained with strong Sulfuric acid heated.



  <I> Example: </I> 10 parts by weight of the intermediate product obtainable by condensation of 4 - amino - azobenzene - 4'-sulfonic acid and chloranil in aqueous alcohol are mixed in 200 parts by weight of 5% oleum for about 1 hour at <B> 150 ' </B> C stirred, in addition to the ring closure also sulphonation of the dioxazine dye takes place. After cooling, it is poured onto ice, filtered off with suction and washed, neutral with sodium chloride solution.

   For complete conversion of the stilfoic acid into the 1N tatritim salt, it is stirred for some time with dilute sodium chloride solution with the addition of soda, filtered off with suction and washed again with sodium clilori solution until neutral. The dye dissolves in water with a reddish blue color and stains the animal, vegetable and viscose fibers in blue tones.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Farb stoffes der Dioxazinreihe, dadurch gekenn zeichnet, dass man das durch Kondensation von 2 Mol 4-Amino-azobenzol-4'-sulfosäure und 1 Mol Chloranil erhältliche Diaryl- aminochinon mit starker Schwefelsäure er hitzt. PATENT CLAIM: Process for the preparation of a dye of the dioxazine series, characterized in that the diaryl-aminoquinone obtainable by condensation of 2 moles of 4-amino-azobenzene-4'-sulfonic acid and 1 mole of chloranil is heated with strong sulfuric acid. Die so erhältliche Farbstoffsulfosäure löst sich in Wasser mit rotstichig blauer Farbe und färbt die tierische, vegetabilische und Viskosefaser in klaren blauen Tönen von guten Tchtheitseigenschaften. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass man das als Ausgangs stoff verwendete Diarylaminochinon in Ge genwart von 5%igem Oleum etwa 1 Stunde bei<B>150'</B> C verrührt. The dye sulfonic acid thus obtainable dissolves in water with a reddish-tinged blue color and dyes the animal, vegetable and viscose fibers in clear blue shades with good fastness properties. SUBSTANTIAL CLAIM: Process according to patent claim, characterized in that the diarylaminoquinone used as the starting material is stirred in the presence of 5% oleum for about 1 hour at 150 ° C.
CH184191D 1934-02-15 1935-02-14 Process for the preparation of a dye of the dioxazine series. CH184191A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE184191X 1934-02-15
CH180698T 1935-02-14

Publications (1)

Publication Number Publication Date
CH184191A true CH184191A (en) 1936-05-15

Family

ID=25720458

Family Applications (1)

Application Number Title Priority Date Filing Date
CH184191D CH184191A (en) 1934-02-15 1935-02-14 Process for the preparation of a dye of the dioxazine series.

Country Status (1)

Country Link
CH (1) CH184191A (en)

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