CH122931A - Process for the preparation of a new dye. - Google Patents

Process for the preparation of a new dye.

Info

Publication number
CH122931A
CH122931A CH122931DA CH122931A CH 122931 A CH122931 A CH 122931A CH 122931D A CH122931D A CH 122931DA CH 122931 A CH122931 A CH 122931A
Authority
CH
Switzerland
Prior art keywords
dye
preparation
color
dissolves
new dye
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 CH122931A publication Critical patent/CH122931A/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

      Verfahren    zur     Darstellung    eines neuen Farbstoffes.    Es wurde gefunden, dass man einen in  Wasser löslichen Farbstoff erhält, der vor  zugsweise die tierische Faser in     gelbstichig     braunen licht- und     walkeehten    Tönen anfärbt,  wenn man 1 Molekül     2.6-Dihalogen-3.5-di-          nitrotoluol    mit 2 Molekülen     2'-Methogy-4-          aminodiphenylamin-2-sulfosäure    kondensiert.

    <I>Beispiel</I>  25,1 Gewichtsteile     2.6-Dichlor-3.5-di-          nitrotoluol    werden mit 500 Teilen Wasser,  in dem 30 Gewichtsteile     calcinierte    Soda  gelöst sind, und mit 58,8 Gewichtsteilen     2'-          Methogy-4-amino-diphenylamin-2-sulfosäure     kondensiert: Nach Zugabe von 1/2 Gewichts  teilen Kupfersulfat wird 20 Stunden gekocht.  Dann wird die entstandene tief rotbraun ge  färbte Lösung filtriert und der     Farbstoff    aus  gesalzen.

   Dem     Farbstoff    kommt folgendes  Formelbild zu  
EMI0001.0016     
    Das     Natronsalz    stellt ein fast schwarzes  Kristallpulver dar, welches sich in konzen  trierter Schwefelsäure mit gelbgrüner Farbe  löst, die beim Erwärmen über rein tiefgrün  nach blau umschlägt. In Alkohol ist der  Farbstoff teilweise mit rotbrauner Farbe lös  lich, in Wasser löst er sich leicht mit der  selben     Farbe.    Auf der Wollfaser erzeugt er       gelbstichig    braune Töne.



      Process for the preparation of a new dye. It has been found that a water-soluble dye is obtained which preferably dyes the animal fiber in yellowish brown light and whiskey tones if 1 molecule of 2,6-dihalo-3,5-dinitrotoluene is mixed with 2 molecules of 2'-methogy- 4- aminodiphenylamine-2-sulfonic acid condensed.

    <I> Example </I> 25.1 parts by weight of 2,6-dichloro-3,5-dinitrotoluene are mixed with 500 parts of water, in which 30 parts by weight of calcined soda are dissolved, and with 58.8 parts by weight of 2'-methogy-4-amino -diphenylamine-2-sulfonic acid condensed: After adding 1/2 parts by weight of copper sulfate, the mixture is boiled for 20 hours. Then the resulting deep red-brown colored solution is filtered and the dye is salted out.

   The following formula applies to the dye
EMI0001.0016
    The sodium salt is an almost black crystal powder that dissolves in concentrated sulfuric acid with a yellow-green color, which changes from pure deep green to blue when heated. The dye is partially soluble in alcohol with a red-brown color; in water it dissolves easily with the same color. It creates yellowish brown tones on the wool fiber.

Claims (1)

PATENTANSPRUCH Verfahren zur Darstellung eines neuen Farbstoffes, dadurch gekennzeichnet, dass man 1 Molekül 2. 6-Dihalögen-3. 5-dinitrotoluol mit 2 iVIolekülen 2'-11Tethogy-4-aminodiphenyl- amin-2-sulfosäure kondensiert. Das Natronsalz stellt ein fast schwarzes Kristallpulver dar, welches sich in konzen trierter Schwefelsäure mit gelbgrüner Farbe löst, die beim Erwärmen über rein tiefgrün nach blau umschlägt. PATENT CLAIM Process for the preparation of a new dye, characterized in that 1 molecule of 2. 6-dihalogen-3. 5-dinitrotoluene condensed with 2 molecules of 2'-11-thogy-4-aminodiphenylamine-2-sulfonic acid. The sodium salt is an almost black crystal powder, which dissolves in concentrated sulfuric acid with a yellow-green color, which changes from pure deep green to blue when heated. In Alkohol ist der Farbstoff teilweise mit rotbrauner Farbe lös lich, in Wasser löst er sich leicht mit der selben Farbe. Auf der Wollfaser erzeugt er gelbstichig braune Töne. The dye is partially soluble in alcohol with a red-brown color; in water it dissolves easily with the same color. It creates yellowish brown tones on the wool fiber.
CH122931D 1925-05-22 1926-05-19 Process for the preparation of a new dye. CH122931A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE122931X 1925-05-22
CH120527T 1926-05-19

Publications (1)

Publication Number Publication Date
CH122931A true CH122931A (en) 1927-10-17

Family

ID=25709493

Family Applications (1)

Application Number Title Priority Date Filing Date
CH122931D CH122931A (en) 1925-05-22 1926-05-19 Process for the preparation of a new dye.

Country Status (1)

Country Link
CH (1) CH122931A (en)

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