CH240461A - Process for the production of a sulfur dye. - Google Patents

Process for the production of a sulfur dye.

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Publication number
CH240461A
CH240461A CH240461DA CH240461A CH 240461 A CH240461 A CH 240461A CH 240461D A CH240461D A CH 240461DA CH 240461 A CH240461 A CH 240461A
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CH
Switzerland
Prior art keywords
brown
production
sulfur dye
dye
water
Prior art date
Application number
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German (de)
Inventor
Ag Schweiz Sprengstoff-Fabrik
Original Assignee
Schweiz Sprengstoff Fabrik 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 Schweiz Sprengstoff Fabrik Ag filed Critical Schweiz Sprengstoff Fabrik Ag
Publication of CH240461A publication Critical patent/CH240461A/en

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Description

  

  Verfahren zur Herstellung eines Schwefelfarbstoffes.    Gegenstand des vorliegenden Patentes ist  ein Verfahren zur Herstellung eines Schwe  felfarbstoffes, das dadurch     gekennzeichnet     ist, dass man     Trinitrotoluol    mit schwefelnden  Mitteln behandelt. Der neue Farbstoff ist ein  braunes, in Wasser unlösliches Pulver, das  aus der braunen     Na2S-Küpe    braune Färbun  gen mit     guten    Echtheitseigenschaften liefert,  die durch Nachbehandlung mit     Bichromat    und  Kupfer noch verbessert werden.  



       Beispiel:     In eine Schmelze von 100g Nass . 9 HGO,  15 g Schwefel und 200 g Wasser, werden bei  97  C unter Rühren 100 g     Trinitrotoluol    in  kleinen Portionen zugegeben, wobei jedesmal  eine Minute gewartet wird. Nach jeder Zu  gabe wird die Eintragungsöffnung sofort ver  schlossen, worauf dann erneutes Kochen mit  leichtem Schäumen eintritt. Während des       Eintragens    muss nicht geheizt werden. Der       Nitrokörper    ist in ca. 20 Minuten umgesetzt.

    Hierauf erfolgt     Nachkochen    ohne Rühren  2 Stunden, dann Verdünnen mit 600 cm' Was-         ser    von 80  C (oder Abfallwasser der vorigen  Versuche),     Luft-Durchleiten    von ca. 80 bis  85  C an bei absinkender Temperatur, so dass  die Temperatur am Schluss ca. 40  C beträgt,  total 2     Stunden,    hernach     Abnutschen,    Aus  waschen mit 200     cm3    lauwarmem Wasser,  gut Absaugen und Trocknen bei 70  C über  Nacht. Der Farbstoff     wird        zuletzt    pulve  risiert.  



  Die Ausbeute beträgt ca. 100     %    des     Tri-          nitrotoluols.  



  Process for the production of a sulfur dye. The present patent relates to a process for the preparation of a sulfur dye, which is characterized in that trinitrotoluene is treated with sulfurizing agents. The new dye is a brown, water-insoluble powder which, from the brown Na2S vat, delivers brown dyeings with good fastness properties, which are further improved by post-treatment with dichromate and copper.



       Example: In a melt of 100g wet. 9 HGO, 15 g sulfur and 200 g water, 100 g trinitrotoluene are added in small portions at 97 ° C. with stirring, each time waiting for one minute. After each addition, the entry opening is immediately closed, whereupon boiling occurs again with slight foaming. There is no need to heat during the entry. The nitro body is implemented in about 20 minutes.

    This is followed by boiling for 2 hours without stirring, then diluting with 600 cm 'of water at 80 ° C. (or waste water from previous experiments), air passing through from approx. 80 to 85 ° C. as the temperature drops, so that the temperature is approx 40 C is for a total of 2 hours, then suction suction, washing off with 200 cm3 of lukewarm water, vacuuming well and drying at 70 C overnight. The dye is pulverized last.



  The yield is approx. 100% of the trinitrotoluene.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung eines Schwe felfarbstoffes, dadurch gekennzeichnet, dass man T'rinitrotoluol mit schwefelnden Mitteln behandelt. Der neue Farbstoff ist ein braunes, in Wasser unlösliches Pulver, das aus brauner Na28-Küpe braune Färbungen mit guten Echt heitseigenschaften liefert, die durch Nach behandlung mit Bichromat und Kupfer noch verbessert werden. PATENT CLAIM: Process for the preparation of a sulfur dye, characterized in that t'rinitrotoluene is treated with sulfurizing agents. The new dye is a brown, water-insoluble powder which, from a brown Na28 vat, delivers brown colorations with good fastness properties, which are further improved by post-treatment with dichromate and copper.
CH240461D 1944-09-28 1944-09-28 Process for the production of a sulfur dye. CH240461A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH240461T 1944-09-28

Publications (1)

Publication Number Publication Date
CH240461A true CH240461A (en) 1945-12-31

Family

ID=4461770

Family Applications (1)

Application Number Title Priority Date Filing Date
CH240461D CH240461A (en) 1944-09-28 1944-09-28 Process for the production of a sulfur dye.

Country Status (1)

Country Link
CH (1) CH240461A (en)

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