CH119384A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH119384A
CH119384A CH119384DA CH119384A CH 119384 A CH119384 A CH 119384A CH 119384D A CH119384D A CH 119384DA CH 119384 A CH119384 A CH 119384A
Authority
CH
Switzerland
Prior art keywords
production
sulfur
new dye
indophenol
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 CH119384A publication Critical patent/CH119384A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B49/00—Sulfur dyes
    • C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols

Landscapes

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

Description

  

      Zusatzpatent    zum     Hauptpatent    Nr. 105237.    Verfahren zur Herstellung eines Schwefelfarbstoffes.    Es wurde gefunden, dass man einen neuen  Farbstoff erhält, wenn man die     Leukover-          bindung    des     Indophenols    aus     Karbazol    und       Nitrosophenol    in Gegenwart von o.     o'-Di-          tolylharnstoff    und gegebenenfalls eines Sub  strates, wie Kochsalz oder Natriumsulfat,  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,       grünstichig    blauen Tönen gefärbt wird.  



  <I>Beispiel:</I>  27,2 Teile des Indophenols, erhalten durch  Kondensation von     Nitrosophenol    und     Kar-          bazol,    werden in eine konzentrierte Lösung  von 29 Teilen kristallisiertem     Natriumsulfid     eingetragen und gerührt, bis das     Indophenol     vollständig reduziert ist. Hierauf trocknet  man die ganze Masse und mischt sie sorg  fältig mit 16 Teilen o.     o'-Ditolylharnstoff,     30 Teilen Schwefel und 10 Teilen Kochsalz.  Die so erhaltene Mischung wird nun bei  zirka,<B>180'</B> gebacken, bis die Entwicklung  von Schwefelwasserstoff aufgehört hat.

   Das    erhaltene Produkt wird nach dem Erkalten  fein gemahlen, mit verdünntem Schwefel  natrium, hierauf mit Wasser und endlich,  zwecks Entfernung von geringen Mengen  noch vorhandener organischer Basen, mit  verdünnter Salzsäure ausgewaschen.



      Additional patent to the main patent No. 105237. 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 made from carbazole and nitrosophenol in the presence of o. O'-di- tolylurea and, if appropriate, a substrate, such as sodium chloride or sodium sulfate, with sulfur at a higher temperature treated.

   The new dye forms a dark blue powder and, with hydrosulfite and sodium hydroxide solution, gives a light yellow vat from which cotton is dyed in greenish blue tones that are washable, lightfast and chlorine-resistant.



  <I> Example: </I> 27.2 parts of the indophenol, obtained by condensation of nitrosophenol and carbazole, are introduced into a concentrated solution of 29 parts of crystallized sodium sulfide and stirred until the indophenol is completely reduced. The whole mass is then dried and carefully mixed with 16 parts of o. O'-ditolylurea, 30 parts of sulfur and 10 parts of table salt. The mixture obtained in this way is now baked at about <B> 180 '</B> until the evolution of hydrogen sulfide has stopped.

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

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. o'-Ditolylharnstoff mit Schwefel bei höherer Temperatur behandelt. Der neue Farbstoff bildet ein dunkelblaues Pulver, gibt rAit Hydrosulfit und.Natronlauge eine hellgelbe Küpe, aus welcher Baumwolle in wasch-, liebt- und chlorechten, grünstichig 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. O'-ditolylurea. The new dye forms a dark blue powder, gives rAit hydrosulfite and caustic soda a light yellow vat, from which cotton is dyed in greenish blue tones that are washable, love- and chlorine-proof. 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.
CH119384D 1926-02-08 1926-02-08 Process for the production of a sulfur dye. CH119384A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH119384T 1926-02-08
CH105237T 1926-11-13

Publications (1)

Publication Number Publication Date
CH119384A true CH119384A (en) 1927-03-16

Family

ID=25706835

Family Applications (1)

Application Number Title Priority Date Filing Date
CH119384D CH119384A (en) 1926-02-08 1926-02-08 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH119384A (en)

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