CH125365A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH125365A
CH125365A CH125365DA CH125365A CH 125365 A CH125365 A CH 125365A CH 125365D A CH125365D A CH 125365DA CH 125365 A CH125365 A CH 125365A
Authority
CH
Switzerland
Prior art keywords
production
sulfur
parts
urea
new 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 CH125365A publication Critical patent/CH125365A/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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Indole Compounds (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     o-Ditolyl-          harnstoff    und von Harnstoff, gegebenenfalls  unter Zusatz eines Substrates, wie Kochsalz  oder Natriumsulfat, 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.         Beispiel:       27,2 Teile des Indophenols, erhalten durch  Kondensation von     Nitrosophenol    mit     Carbazol,     werden in eine konzentrierte     Polysulfidlösung,     bestehend aus 29 Teilen kristallisiertem Na  triumsulfid, 8 Teilen Schwefel, 15 bis 20  Teilen Wasser eingetragen und gerührt, bis  das Indophenol vollständig reduziert ist.

   So  dann gibt man der Masse 12 Teile Schwefel,  12 Teile     Harnstoff    und 16' Teile     o-Ditolyl-          harnstoff    zu, trocknet sie im Vakuum und  erhitzt das zerkleinerte Produkt in einem  geeigneten Ofen auf 185-200  , und zwar    so lange, bis die     Schwefelwasserstoffentwick-          lung    beendet ist. Nach dem Erkalten wird  das Backgut fein gemahlen, nacheinander  mit verdünnter     Schwefelnatriumlösung    aus  gezogen, mit verdünnter 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 is formed from carbazole and nitrosophenol in the presence of o-ditolyl urea and urea, optionally with the addition of a substrate such as sodium chloride or sodium sulfate, with sulfur at a higher level Temperature treated:

   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. Example: 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 12 parts of sulfur, 12 parts of urea and 16 parts of o-ditolyl urea are added to the mass, they are dried in vacuo and the comminuted product is heated to 185-200 in a suitable oven until the hydrogen sulfide is evolved - treatment has ended. After cooling, the baked goods are finely ground, drawn out 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 Gegen wart von o-Ditolylharnstoff und von Harnstoff mit Schwefel bei höherer Temperatur behan delt. Der neue Farbstoff bildet ein dunkel blaues Pulver, gibt mit Hydrosulfit und Na tronlauge eine hellgelbe Küpe, aus welcher Baumwolle in wasch-, licht- und chlorechten, blauen Tönen gefärbt wird. PATENT CLAIM: Process for the production of a new dye, characterized in that the leuco compound of indophenol is treated from carbazole and nitrosophenol in the presence of o-ditolylurea and urea with sulfur at a higher temperature. The new dye forms a dark blue powder, gives a light yellow vat with hydrosulfite and sodium hydroxide solution, from which cotton is dyed in wash, light and chlorine-fast blue tones. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass die Reaktion in Gegen wart eines Substrates durchgeführt wird. SUBCLAIM: Method according to claim, characterized in that the reaction is carried out in the presence of a substrate.
CH125365D 1926-04-30 1926-04-30 Process for the production of a sulfur dye. CH125365A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH125365T 1926-04-30
CH105237T 1926-11-13

Publications (1)

Publication Number Publication Date
CH125365A true CH125365A (en) 1928-04-16

Family

ID=25706844

Family Applications (1)

Application Number Title Priority Date Filing Date
CH125365D CH125365A (en) 1926-04-30 1926-04-30 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH125365A (en)

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