CH125367A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH125367A
CH125367A CH125367DA CH125367A CH 125367 A CH125367 A CH 125367A CH 125367D A CH125367D A CH 125367DA CH 125367 A CH125367 A CH 125367A
Authority
CH
Switzerland
Prior art keywords
production
parts
sulfur
new dye
sulfur dye
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 CH125367A publication Critical patent/CH125367A/en

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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

Landscapes

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

Description

  

  Zusatzpatent zum Hauptpatent Nr.<B>105237.</B>    Verfahren zur Herstellung eines Schwefelfarbstoffes.    Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man die     Leukover-          bindung    des Indophenols aus     Carbazol    und       Nitrosophenol    in Gegenwart von Anilin und  von Harnstoff, gegebenenfalls unter Zusatz  eines Substrates, wie Kochsalz oder Natrium  sulfat, mit Schwefel bei höherer     Temperatur     behandelt. Der neue Farbstoff bildet ein  dunkelblaues Pulver, gibt mit     Hydrosulfit     und Natronlauge eine hellgelbe     Küpe,    aus  welcher Baumwolle in wasch-, licht- und  chlorechten, blauen Tönen gefärbt wird.

      <I>Beispiel:</I>  27,2 Teile des Indophenols, erhalten durch  Kondensation von     Nitrosophenol    mit     Carbazol,     werden in eine konzentrierte     Polysulfidlösung     bestehend aus 29 Teilen kristallisiertem       Natriumsulfid,    8 Teilen Schwefel, 15 bis 20  Teilen Wasser eingetragen und gerührt, bis  das Indophenol vollständig reduziert ist.

   So  dann gibt man der Masse 2 Teile     Ammon-          chlorid,    10 Teile Schwefel, 12 Teile Harn  stoff, 8 Teile Kochsalz und 9 Teile Anilin  zu, trocknet sie im     Vakuum    und erhitzt das  zerkleinerte Produkt in einem geeigneten    Ofen auf 185-200  , und zwar so. lange, bis  die     Schwefelwasserstoffentwicklung    beendet  ist. Nach dem Erkalten wird das Backgut  fein gemahlen, nacheinander mit verdünnter       Schwefelnatriumlösung    ausgezogen, mit ver  dünnter Salzsäure gewaschen und getrocknet.



  Additional patent to main patent no. <B> 105237. </B> Process for the production of a sulfur 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 aniline and urea, optionally with the addition of a substrate such as sodium chloride or sodium sulfate. The new dye forms a dark blue powder and, with hydrosulphite and sodium hydroxide solution, gives a light yellow vat from which cotton is dyed in wash, light and chlorine-fast blue tones.

      <I> Example: </I> 27.2 parts of indophenol, obtained by condensation of nitrosophenol with carbazole, are introduced into a concentrated polysulphide solution consisting of 29 parts of crystallized sodium sulphide, 8 parts of sulfur, 15 to 20 parts of water and stirred until the indophenol is completely reduced.

   Then 2 parts of ammonium chloride, 10 parts of sulfur, 12 parts of urea, 8 parts of table salt and 9 parts of aniline are added to the mass, they are dried in a vacuum and the comminuted product is heated to 185-200 in a suitable oven so. long until the evolution of hydrogen sulfide has ended. After cooling, the baked goods are finely ground, extracted one after the other with dilute sodium sulphide solution, washed with dilute hydrochloric acid and dried.

 

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man die Leukoverbindung des Indophenols aus Carbazol und Nitrosophenol in Gegenwart von Anilin und von Harnstoff mit Schwefel bei höherer Temperatur behandelt. Der neue Farbstoff bildet ein dunkelblaues Pulver, gibt mit Hydrosulfit und Natronlauge eine hellgelbe Küpe, aus welcher Baumwolle in wasch-, licht- und chlorechten, blauen Tönen gefärbt wird. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Reaktion in Gegen wart eines Substrates durchgeführt 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 aniline and urea. The new dye forms a dark blue powder and, with hydrosulphite and sodium hydroxide solution, gives a light yellow vat from which cotton is dyed in wash, light and chlorine-fast blue tones. SUBCLAIM: Method according to claim, characterized in that the reaction is carried out in the presence of a substrate.
CH125367D 1926-04-30 1926-04-30 Process for the production of a sulfur dye. CH125367A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH125367T 1926-04-30
CH105237T 1926-11-13

Publications (1)

Publication Number Publication Date
CH125367A true CH125367A (en) 1928-04-16

Family

ID=25706846

Family Applications (1)

Application Number Title Priority Date Filing Date
CH125367D CH125367A (en) 1926-04-30 1926-04-30 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH125367A (en)

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