CH234039A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

Info

Publication number
CH234039A
CH234039A CH234039DA CH234039A CH 234039 A CH234039 A CH 234039A CH 234039D A CH234039D A CH 234039DA CH 234039 A CH234039 A CH 234039A
Authority
CH
Switzerland
Prior art keywords
sulfur dye
production
diazaperylene
sulfur
dinaphtho
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 CH234039A publication Critical patent/CH234039A/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)
  • Coloring (AREA)

Description

  

      Zusatzpatent        zum    Hauptpatent Nr. 217769.    Verfahren zur Herstellung eines     Schwefelfarbstoffes.       Vorliegendes Patent bezieht sich auf ein       Verfahren    zur Herstellung eines Schwefel  farbstoffes, dadurch gekennzeichnet, dass man       Dinitro-dinaphtha-4,10-diazaperylen,    wie es  durch     Erhitzen    von     1,5.-Di-2'-naphthylamino-          anthrachinon        in    Phosphorsäure und Nitrieren  des so erhaltenen     Dinaphtho-4,

  10--diazapery-          lens    mit     ungefähr    der berechneten Menge  Salpetersäure in Gegenwart von konzentrier  ter Schwefelsäure erhältlich ist, mit einem  schwefelnden Mittel behandelt.  



  Der so erhaltene Schwefelfarbstoff ist ein  schwarzes Pulver und färbt die pflanzliche  Faser     aus    dem     Schwefelnatriumbade    in       braunstichi.g        oliven    Farbtönen von beson  derer Lichtechtheit.  



  <I>Beispiel:</I>  In eine     Polysulfidschm-elze    aus 140 Teilen       kristallisiertem    Schwefelnatrium und 80  Teilen     Schwefel    werden bei     Kochtemperatur     40 Teile     Dinitro-dinaphth-o-4,10-diazaperylen     eingetragen, wie es durch Nitrieren des Di-         naphtho-4,10-diazaperylenss    (siehe Schweizer  Patent Nr. 220665) in konzentrierter Schwe  felsäure mit     etwas    mehr als der berechneten  Menge     .Salpetersäure    erhältlich ist. Bei einer  Temperatur von l18  wird einige Stunden  am     Rückflusskühl    r gekocht, -dann wird die  Schmelze eingetrocknet.

   Hierauf wird :die  Temperatur allmählich auf 260  erhöht und  6 Stunden bei 260-270  gehalten. Nach dem  Aufschliessen .des Rohproduktes mit Schwe  felnatrium und Natronlauge wird der Farb  stoff aus seiner wässerigen Lösung durch  Ansäuern     abgeschieden.  



      Additional patent to main patent No. 217769. 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-dinaphtha-4,10-diazaperylene, as is done by heating 1,5-di-2'-naphthylamino-anthraquinone in phosphoric acid and nitrating of the dinaphtho-4 thus obtained,

  10 - diazaperylenes with approximately the calculated amount of nitric acid in the presence of concentrated sulfuric acid, treated with a sulphurizing agent.



  The sulfur dye obtained in this way is a black powder and colors the vegetable fibers from the sulfur sodium bath in brownish olive shades of particular lightfastness.



  <I> Example: </I> 40 parts of dinitro-dinaphth-o-4,10-diazaperylene are introduced into a polysulfide melt of 140 parts of crystallized sodium sulfur and 80 parts of sulfur at the boiling point, as is 4,10-diazaperylenss (see Swiss patent no. 220665) in concentrated sulfuric acid with a little more than the calculated amount. Nitric acid is available. The mixture is refluxed for a few hours at a temperature of 118, then the melt is dried.

   The temperature is then gradually increased to 260 and held at 260-270 for 6 hours. After digestion of the crude product 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, mnan Dinitro-,dinaphtho-4,10-diazaperylen, wie .es durch Erhitzen von 1,5-Di-2'-naphthyl- amino-anthrachinon in Phosphorsäure und: PATENT CLAIM: Process for the production of a sulfur dye, characterized in that, mnan dinitro-, dinaphtho-4,10-diazaperylene, like .es by heating 1,5-di-2'-naphthylamino-anthraquinone in phosphoric acid and : Nitrieren des so erhaltenen Dinaphtho-4,10-- diazaperylens mit ungefähr der berechneten Menbe Salpetersäure in Gegenwart von kon- zentrierter Schwefelsäure erhältlich ist, mit einem schwefelnden Mittel behandelt. Der so erhaltene Schwefelfarbstoff ist ein schwarzes Pulver und färbt die pflanzliche Faser aus dem Schwefelnat.riumbade in braunstichi; Oliven Farbtönen von beson derer Lichtechtheit. Nitration of the dinaphtho-4,10- diazaperylene obtained in this way with approximately the calculated amount of nitric acid in the presence of concentrated sulfuric acid is treated with a sulphurizing agent. The sulfur dye obtained in this way is a black powder and colors the vegetable fiber from the sulfuric acid bath in brownish tint; Olive shades of particular lightfastness.
CH234039D 1943-01-04 1943-01-04 Process for the production of a sulfur dye. CH234039A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH234039T 1943-01-04
CH217769T 1943-03-02

Publications (1)

Publication Number Publication Date
CH234039A true CH234039A (en) 1944-08-31

Family

ID=25726060

Family Applications (1)

Application Number Title Priority Date Filing Date
CH234039D CH234039A (en) 1943-01-04 1943-01-04 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH234039A (en)

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