CH119388A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH119388A
CH119388A CH119388DA CH119388A CH 119388 A CH119388 A CH 119388A CH 119388D A CH119388D A CH 119388DA CH 119388 A CH119388 A CH 119388A
Authority
CH
Switzerland
Prior art keywords
production
sulfur
new dye
sulfur dye
indophenol
Prior art date
Application number
Other languages
German (de)
Inventor
Gesellschaft Fuer Chemis Basel
Original Assignee
Chem Ind Basel
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 Chem Ind Basel filed Critical Chem Ind Basel
Publication of CH119388A publication Critical patent/CH119388A/en

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B49/00Sulfur dyes
    • C09B49/10Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Description

       

  Verfahren zur Herstellung     eines        Seliwefelfarbstoffes.       Es wurde gefunden, dass     man    einen neuen       Farbstoff    erhält, wenn man die     Leukover-          bindung    des     Indophenols    aus     Karbazol    und       Nitrosophenol    in Gegenwart von     o-Toluidin     und gegebenenfalls eines Substrates, wie  Kochsalz oder Natriumsulfat, mit Schwefel  bei höherer Temperatur behandelt.

   Der neue  Farbstoff bildet ein dunkelblaues Pulver,  gibt mit     1Tydrosulfit    und Natronlauge eine  hellgelbe     Küpe,    aus welcher Baumwolle in  wasch-, licht- und chlorechten,     rotstichig     blauen Tönen gefärbt wird.

           Beispiel:            \37,2        'feile    des Indophenols, erhalten durch       Kondensation    von     Nitrosophenol    und     Kar-          bazol,    werden in     eine    konzentrierte Lösung  von 29 Teilen kristallisiertem     Natriumsulfit     eingetragen und gerührt, bis das Indophenol  vollständig reduziert ist. Hierauf trocknet  man die ganze Masse und mischt sie sorg  fältig mit 19 Teilen     o-Toluidin,    24 Teilen  Schwefel und 10 Teilen Kochsalz. Die so er  haltene Mischung wird nun bei zirka 180    gebacken, bis die Entwicklung von Schwefel  wasserstoff aufgehört hat.

   Das erhaltene    Produkt wird nach dein Erkalten fein ge  mahlen, mit verdünntem Schwefelnatrium,  hierauf mit Wasser und endlich, zwecks Ent  fernung von geringen Mengen noch vorhan  dener organischer Basen, mit verdünnter  Salzsäure gewaschen.



  Process for the production of a seliulfur dye. It has been found that a new dye is obtained if the leuco compound of indophenol from carbazole and nitrosophenol is treated with sulfur at a higher temperature in the presence of o-toluidine and, if appropriate, a substrate such as sodium chloride or sodium sulfate.

   The new dye forms a dark blue powder, gives a light yellow vat with 1Tydrosulfite and sodium hydroxide solution, from which cotton is dyed in wash, light and chlorine-fast, reddish blue tones.

           Example: 37.2 'files of indophenol, obtained by condensation of nitrosophenol and carbazole, are introduced into a concentrated solution of 29 parts of crystallized sodium sulfite and stirred until the indophenol is completely reduced. The whole mass is then dried and carefully mixed with 19 parts of o-toluidine, 24 parts of sulfur and 10 parts of table salt. The mixture obtained in this way is now baked at around 180 ° until the development of hydrogen sulfide has stopped.

   After cooling, the product obtained is finely ground, washed with dilute sodium sulphide, then with water and finally, for the purpose of removing small amounts of organic bases still present, with dilute hydrochloric acid.


    

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man die Leukoverbindung des Indophenols aus Karbazol und Nitrosophenol in Gegen wart von o-Toluidin mit Schwefel bei höherer Temperatur behandelt. Der neue Farbstoff bildet ein dunkelblaues Pulver, gibt mit Ry- drosulfit und Natronlauge eine hellgelbe Küpe, aus welcher Baumwolle in wasch-, licht- und chlorechten, rotstichig blauen Tönen gefärbt wird. PATENT CLAIM: Process for the production of a new dye, characterized in that the leuco compound of indophenol from carbazole and nitrosophenol is treated with sulfur at a higher temperature in the presence of o-toluidine. The new dye forms a dark blue powder and, with rydrosulfite and caustic soda, gives a light yellow vat from which cotton is dyed in wash-, light- and chlorine-fast, reddish blue tones. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Schwefelung in Ge genwart eines Substrates durchgeführt wird. SUBSTANTIAL CLAIM: Method according to claim, characterized in that the sulphurisation is carried out in the presence of a substrate.
CH119388D 1926-02-08 1926-02-08 Process for the production of a sulfur dye. CH119388A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119388T 1926-02-08
CH105237T 1926-11-13

Publications (1)

Publication Number Publication Date
CH119388A true CH119388A (en) 1927-03-16

Family

ID=25706839

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119388D CH119388A (en) 1926-02-08 1926-02-08 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH119388A (en)

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