CH217769A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH217769A
CH217769A CH217769DA CH217769A CH 217769 A CH217769 A CH 217769A CH 217769D A CH217769D A CH 217769DA CH 217769 A CH217769 A CH 217769A
Authority
CH
Switzerland
Prior art keywords
sulfur
production
sulfur dye
dye
dibenzo
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 CH217769A publication Critical patent/CH217769A/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
    • C09B49/12—Sulfur dyes from other compounds, e.g. other heterocyclic compounds

Landscapes

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

Description

  

  Verfahren zur Herstellung eines     Schwefelfarbstoffes.       Es wurde gefunden, dass man zu wert  vollen Schwefelfarbstoffen gelangt, wenn  man     Diazaverbindungen        mit    im ganzen min  destens sechs Ringen, insbesondere     4,5,9,10-          Dibenzo-3,8-,diazapyren    der Formel:  
EMI0001.0006     
    oder deren     Substitutionsprodukte    in an sich  bekannter Weise mit schwefelnden Mitteln  behandelt und die dabei erhaltene Roh  schmelze in der üblichen Weise aufarbeitet.  



  Man erhält mit den neuen Farbstoffen  auf     Baumwolle    wertvolle braune Färbungen,  die durch sehr gute     Eehtheitseigenschaften          ausgezeichnet    sind.  



  Vorliegendes Patent bezieht sich nun auf  ein Verfahren zur Herstellung eines Schwefel  farbstoffes,dadurch gekennzeichnet, dass man       4.5,9.10-Dibenzo-3,8-diazapyren    mit einem       schwefelnden    Mittel behandelt.  



  Der so erhaltene Schwefelfarbstoff ist ein  schwarzes Pulver und färbt die pflanzliche    Faser aus dem     Schwefelnatriumbad    in  dunkelbraunen Tönen.  



  <I>Beispiel:</I>  20 Teile     4,5,9,10-Dibenzo-3,8-diazapyren     werden mit etwa 80 Teilen Schwefel ver  mischt und     etwa    24 Stunden bei etwa 260   C  gebacken. Das erhaltene Rohprodukt wird in  üblicher Weise mit     S.chwefe-Inatrium    und  Lauge aufgeschlossen; nach dem Verdünnen  mit Wasser wird die Lösung filtriert und aus  dem Filtrat der gebildete Farbstoff durch  Ansäuern abgeschieden.



  Process for the production of a sulfur dye. It has been found that valuable sulfur dyes are obtained if diaza compounds with a total of at least six rings, in particular 4,5,9,10-dibenzo-3,8-, diazapyren of the formula:
EMI0001.0006
    or their substitution products are treated in a manner known per se with sulphurizing agents and the crude melt obtained is worked up in the usual manner.



  With the new dyes on cotton, valuable brown dyeings are obtained which are distinguished by very good fastness properties.



  The present patent now relates to a process for the preparation of a sulfur dye, characterized in that 4,5,9,10-dibenzo-3,8-diazapyrene is treated with a sulfurizing agent.



  The sulfur dye obtained in this way is a black powder and colors the vegetable fiber from the sulfur sodium bath in dark brown tones.



  <I> Example: </I> 20 parts of 4,5,9,10-dibenzo-3,8-diazapyrene are mixed with about 80 parts of sulfur and baked at about 260 ° C. for about 24 hours. The crude product obtained is digested in the customary manner with sulfur-sodium and lye; after dilution with water, the solution is filtered and the dye formed is separated off from the filtrate by acidification.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Schwefel farbstoffes, dadurch gekennzeichnet, @dass man 4,5,9,10-Dibenzo.-3,8-diazapyren mit einem schwefelnden Mittel behandelt. Der so erhaltene Schwefelfarbstoff ist ein schwarzes Pulver und färbt die pflanzliche Faser aus dem Schwefelnatriumbad in dunkelbraunen Tönen. Claim: Process for the production of a sulfur dye, characterized in that 4,5,9,10-dibenzo.-3,8-diazapyrene is treated with a sulfurizing agent. The sulfur dye obtained in this way is a black powder and colors the vegetable fiber from the sulfur sodium bath in dark brown tones.
CH217769D 1939-10-07 1940-09-16 Process for the production of a sulfur dye. CH217769A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE217769X 1939-10-07
DE220740X 1940-07-22

Publications (1)

Publication Number Publication Date
CH217769A true CH217769A (en) 1941-11-15

Family

ID=25762381

Family Applications (1)

Application Number Title Priority Date Filing Date
CH217769D CH217769A (en) 1939-10-07 1940-09-16 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH217769A (en)

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