CH220664A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH220664A
CH220664A CH220664DA CH220664A CH 220664 A CH220664 A CH 220664A CH 220664D A CH220664D A CH 220664DA CH 220664 A CH220664 A CH 220664A
Authority
CH
Switzerland
Prior art keywords
sulfur dye
production
sulfur
dibenzo
diazaperylene
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 CH220664A publication Critical patent/CH220664A/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

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

  Verfahren zur Herstellung eines     Schwefelfarbstoffes.       Vorliegendes Patent bezieht sich auf ein  Verfahren zur Herstellung eines Schwefel  farbstoffes, dadurch gekennzeichnet, dass man       Dinitro-    5.6.11.12 -     dibenzo-4.10    -     diazaperylen,     wie es durch Nitrieren des     5.6.11.12-Dibenzo-          4.10-diazaperylens    in konzentrierter Schwe  felsäure mit einem geringen     Überschuss    über  die berechnete Menge Salpetersäure erhältlich  ist, mit einem schwefelnden Mittel behandelt.  



  Der so erhaltene Schwefelfarbstoff ist ein  graues Pulver und färbt die pflanzliche Faser  aus dem     Schwefelnatriumbad        in    bräunlich  oliven Tönen.  



  <I>Beispiel:</I>  In eine     Polysulfidschmelze    aus 56 Teilen  kristallisiertem Schwefelnatrium und 32 Tei  len Schwefel werden bei Kochtemperatur  20 Teile     Dinitro-5.6.11.12-dibenzo-4.10-diaza-          perylen,    wie es durch Nitrieren des 5.6.11.12  Dibenzo-4.10-diazaperylens in konzentrierter  Schwefelsäure mit etwas mehr als der be  rechneten Menge 100%iger Salpetersäure er  hältlich ist, eingetragen. Bei einer Tempera  tur von<B>11.8'</B> C wird einige Stunden am       Rückflusskühler    gekocht, dann wird die    Schmelze eingetrocknet.     Hierauf    wird die  Temperatur allmählich auf 280   C erhöht  und 4 Stunden bei 280 bis 300   C gehalten.

    Nach dem Aufschliessen des Rohproduktes  mit Schwefelnatrium und Natronlauge wird  der Farbstoff aus seiner wässerigen Lösung  durch Ansäuern abgeschieden.



  Process for the production of a sulfur dye. The present patent relates to a process for the preparation of a sulfur dye, characterized in that dinitro-5.6.11.12-dibenzo-4.10-diazaperylene, as it is by nitrating the 5.6.11.12-dibenzo-4.10-diazaperylene in concentrated sulfuric acid with a small excess over the calculated amount of nitric acid is available, treated with a sulphurizing agent.



  The sulfur dye obtained in this way is a gray powder and colors the vegetable fiber from the sulfur sodium bath in brownish olive tones.



  <I> Example: </I> In a polysulfide melt of 56 parts of crystallized sodium sulphide and 32 parts of sulfur, 20 parts of dinitro-5.6.11.12-dibenzo-4.10-diaza-perylene are added at the boiling temperature, as is achieved by nitrating the 5.6.11.12 dibenzo -4.10-diazaperylene in concentrated sulfuric acid with a little more than the calculated amount of 100% nitric acid it is available, registered. At a temperature of <B> 11.8 '</B> C, the mixture is boiled for a few hours on the reflux condenser, then the melt is dried. The temperature is then gradually increased to 280 ° C. and kept at 280 to 300 ° C. for 4 hours.

    After the crude product has been broken down with sodium sulphide and sodium hydroxide solution, the dye is separated from its aqueous solution by acidification.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Schwe felfarbstoffes, dadurch gekennzeichnet, dass man Dinitro - 5.6.11.12 - dibenzo - 4.10 - diaza- perylen, wie es durch Nitrieren des 5.6.11.12- Dibenzo-4.10-diazaperylens in konzentrierter Schwefelsäure mit einem geringen Überschuss über die berechnete Menge Salpetersäure er hältlich ist, mit einem schwefelnden Mittel behandelt. Der so erhaltene Schwefelfarbstoff ist ein graues Pulver und färbt die pflanzliche Faser aus dem Schwefelnatriumbad in bräun lich-oliven Tönen. PATENT CLAIM: Process for the production of a sulfur dye, characterized in that one dinitro - 5.6.11.12 - dibenzo - 4.10 - diaza perylene, as is done by nitrating the 5.6.11.12-dibenzo-4.10-diazaperylene in concentrated sulfuric acid with a slight excess the calculated amount of nitric acid is available, treated with a sulphurizing agent. The sulfur dye obtained in this way is a gray powder and colors the vegetable fiber from the sulfur sodium bath in brownish-olive tones.
CH220664D 1940-07-22 1940-09-16 Process for the production of a sulfur dye. CH220664A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE220664X 1940-07-22
CH217769T 1943-03-02

Publications (1)

Publication Number Publication Date
CH220664A true CH220664A (en) 1942-04-15

Family

ID=25726067

Family Applications (1)

Application Number Title Priority Date Filing Date
CH220664D CH220664A (en) 1940-07-22 1940-09-16 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH220664A (en)

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