AT45479B - Process for the production of nitrogen-containing vat dyes of the thioindigo series. - Google Patents

Process for the production of nitrogen-containing vat dyes of the thioindigo series.

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Publication number
AT45479B
AT45479B AT45479DA AT45479B AT 45479 B AT45479 B AT 45479B AT 45479D A AT45479D A AT 45479DA AT 45479 B AT45479 B AT 45479B
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AT
Austria
Prior art keywords
nitrogen
production
vat dyes
thioindigo series
containing vat
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German (de)
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Hoechst Ag
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Publication of AT45479B publication Critical patent/AT45479B/en

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   <Desc/Clms Page number 1> 
 



  Verfahren zur Herstellung von stickstoffhaltigen Küpenfarbstoffen der   Thioindigoreihe.   



   Es wurde gefunden, dass die   Polyhalogenthioindigos   befähigt sind, beim Erhitzen mit Ammoniak oder primären Basen-zweckmässig unter Zusatz von Substanzen, welche den Austausch des Halogens, z. B. in der Anthrachinonreihe erleichtern, wie Kupfer, essigsaures Natron   etc. - das   Halogen, insbesondere Brom, teilweise auszutauschen, wobei neue stickstoffhaltige Küpenfarbstoffe entstehen. 



   Beispiel I : 20 Teile eines Pentabromthioindigos oder auch eines Tetrabromthioindigos, 
 EMI1.1 
 entstehen, werden mit etwa 150 Teilen   300/oigem   Ammoniakwasser unter Zusatz von 1/2 Teil Kupferbronze mit oder ohne Zusatz von etwas Natriumazetat ungefähr 5 Stunden auf etwa 1200 erhitzt. Nach dem Absaugen und Auswaschen mit Wasser stellt das Produkt ein   blauviolettes Pu1ver   dar, welches Baumwolle und Wolle in   violetten,   sehr echten Tönen anfärbt. Das Produkt ist bromärmer geworden als das Ausgangsprodukt und zeigt gemäss der   Stickstoffanalyse,   dass Stickstoff eingetreten ist. Bei stärkerem Erhitzen werden noch blauere Produkte erhalten. 



   Beispiel 11 : 20 Teile   Penta- oder Tetrabromthioindigo werden   mit 60 Teilen   p-Toluidin   oder Anilin einige Stunden auf etwa   If'QO oder   kurze Zeit auf Siedetemperatur erhitzt, wobei man zweckmässig die für den leichteren Austausch von Halogen gegen Amin bekannt gewordenen Mittel, wie z.   B.   essigsaures Natron und Kupferpulver, zusetzen'kann. 



  Der nach Entfernung des   überschüssigen Amins erhaltene   Farbstoff stellt ein violettblaues Pulver dar, welches in der Hydrosulfitkiipe Baumwolle und Wolle in   violetthlauen   bis blauen Tönen anfärbt. Die Nuance ist um so blauer, je intensiver die Einwirkung des Amins war. 



   An Stelle des   p-Toluidins,   Anilins, o-Toluidins   etc.,   können andere Monoamine, wie z. B. Monoäthylamin etc, verwandt worden. Ebenso können an Stelle des   Polybromthio-   indigos, wie z.   B.   die bromierten Dichlor-, Tetrachlorthioindigos, angewandt werden. 

**WARNUNG** Ende DESC Feld kannt Anfang CLMS uberlappen**.



   <Desc / Clms Page number 1>
 



  Process for the production of nitrogen-containing vat dyes of the thioindigo series.



   It has been found that the polyhalogen thioindigos are capable of, when heated with ammonia or primary bases, expediently with the addition of substances which replace the halogen, e.g. B. facilitate in the anthraquinone series, such as copper, acetic acid soda, etc. - to partially replace the halogen, especially bromine, with new nitrogen-containing vat dyes.



   Example I: 20 parts of a pentabromothioindigo or a tetrabromothioindigo,
 EMI1.1
 arise, are heated with about 150 parts of 300% ammonia water with the addition of 1/2 part of copper bronze with or without the addition of a little sodium acetate for about 5 hours to about 1200. After vacuuming and washing with water, the product is a blue-violet powder which dyes cotton and wool in violet, very real tones. The product has become lower in bromine than the starting product and, according to the nitrogen analysis, shows that nitrogen has entered. With more intense heating, even bluer products are obtained.



   Example 11: 20 parts of penta- or tetrabromothioindigo are heated with 60 parts of p-toluidine or aniline for a few hours to about If'QO or for a short time to the boiling point . B. acetic acid soda and copper powder, can add.



  The dye obtained after removal of the excess amine is a violet-blue powder which, in the hydrosulfite section, dyes cotton and wool in violet-blue to blue shades. The more intense the action of the amine, the bluer the shade.



   Instead of p-toluidine, aniline, o-toluidine, etc., other monoamines, such as. B. Monoethylamine etc, has been used. Likewise, instead of polybromothio indigo, such as. B. the brominated dichloro, tetrachlorothioindigos are used.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von stiekstoffhllltigen Küpenfarbstoffen der Thioindigoreihe, dadurch gekennzeichnet, dass man Polyhalogenthioindigos mit Ammoniak oder primären Basen-ohne oder mit Zusatz der für leichteren Austausch von Halogen mit Ammoniak oder Aminen bekannten Mittel-erhitzt. **WARNUNG** Ende CLMS Feld Kannt Anfang DESC uberlappen**. PATENT CLAIM: Process for the production of high-substance vat dyes of the thioindigo series, characterized in that polyhalothioindigos are heated with ammonia or primary bases - without or with the addition of the agents known for the easier exchange of halogen with ammonia or amines. ** WARNING ** End of CLMS field may overlap beginning of DESC **.
AT45479D 1908-11-13 1909-03-24 Process for the production of nitrogen-containing vat dyes of the thioindigo series. AT45479B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE45479X 1908-11-13

Publications (1)

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AT45479B true AT45479B (en) 1910-12-27

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AT45479D AT45479B (en) 1908-11-13 1909-03-24 Process for the production of nitrogen-containing vat dyes of the thioindigo series.

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AT (1) AT45479B (en)

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