CH138239A - Process for the preparation of a vat dye. - Google Patents
Process for the preparation of a vat dye.Info
- Publication number
- CH138239A CH138239A CH138239DA CH138239A CH 138239 A CH138239 A CH 138239A CH 138239D A CH138239D A CH 138239DA CH 138239 A CH138239 A CH 138239A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- vat dye
- vat
- blue
- Prior art date
Links
- 239000000984 vat dye Substances 0.000 title claims description 6
- 238000000034 method Methods 0.000 title claims description 4
- 238000002360 preparation method Methods 0.000 title claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 5
- 239000000975 dye Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims 3
- 235000005811 Viola adunca Nutrition 0.000 claims 1
- 240000009038 Viola odorata Species 0.000 claims 1
- 235000013487 Viola odorata Nutrition 0.000 claims 1
- 235000002254 Viola papilionacea Nutrition 0.000 claims 1
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical compound [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 235000011121 sodium hydroxide Nutrition 0.000 claims 1
- 235000013311 vegetables Nutrition 0.000 claims 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 2
- 235000011118 potassium hydroxide Nutrition 0.000 description 2
- KHUFHLFHOQVFGB-UHFFFAOYSA-N 1-aminoanthracene-9,10-dione Chemical compound O=C1C2=CC=CC=C2C(=O)C2=C1C=CC=C2N KHUFHLFHOQVFGB-UHFFFAOYSA-N 0.000 description 1
- XYKSCLIHMGLNHK-UHFFFAOYSA-N 2-chlorobenzo[b]phenalen-7-one Chemical compound C1=CC2=CC(Cl)=CC(C=3C(=CC=CC=3)C3=O)=C2C3=C1 XYKSCLIHMGLNHK-UHFFFAOYSA-N 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Coloring (AREA)
Description
Verfahren zur Darstellung eines Küpenfarbstoffes. Im Hauptpatent Nr.<B>136050</B> ist ein Ver fahren zur Darstellung eines wertvollen Küpenfarbstofes beschrieben, bei dem 1'- Anthrachinonyl-6-aminobenzanthron mit al kalischen Mitteln behandelt wird.
Es wurde nun .gefunden, dass man einen ähnlichen wertvollen Küpenfarbstoff von her vorragenden Echtheitseigenschaften erhalten kann, wenn man 1'-Anthrachinonyl-2-amino- benzanthr.on mit alkalischen '..Mitteln behan delt.
Der neue Farbstoff löst sich in kon zentrierter Schwefelsäure mit blau-,4oletter Farbe, die auf Zusatz von einigen Tropfen Salpetersäure nach rotbraun umschlägt, und gibt mit Natronlauge und Hy drosulfit eine violettblaue Küpe, aus der die pflanzliche Faser in sehr echten schwarzen Tönen ge- f ärbt wird.
<I>Beispiel</I> In 60 Teile geschmolzenes Ätzkali werden bei Temperaturen, die zwischen 230 bis<B>300'</B> liegen können, 10 Teile 1'-Anthrachinonyl- 2-aminobenzanthron (erhalten zum Beispiel durch Kondensation von 2-Chlorbenzanthron mit 1-Aminoanthrachinon) unter gutem Rüh-. ren langsam eingetragen.
(Es ist hierbei vor teilhaft, das kristallinische 1'-Authrachino- nyl-2-aminobenzanthron durch Lösen in kon- zentrierter Schwefelsäure und Eingiessen der schwefelsauren Lösung in Wasser in feine Verteilung zu bringen.) Wenn alles Konden- sationsprodukt eingetragen ist, wird solange bei der angegebenen Temperatur gehalten, bis,die Farb:
stoffbildung nicht mehr zunimmt. Die abgekühlte Schmelze wird mit Wasser aufgenommen und solange ,gekocht, bis der Farbstoff sich vollständig ausgeschieden hat, alsdann wird heiss filtriert und mit heissem Wasser gewaschen. Die für die Bildung des schwarzen Küpenfarbstoffes jeweils günstig sten Temperaturbedingungen hängen in der Hauptsache von dem Wassergehalt des an gewandten Atzkalis ab.
Bei einem sehr ge- ringen Waesergehalt liegt das Optimum für die Entstehung des .schwärzen Küperifarb- stoffes bei niedrigeren Schmelztemperaturen (zirka<B>230-250');</B> bei etwas grösserem Was sergehalt muss die Temperatur der Schmelze auf zirka.<B>270'</B> und höher .gesteigert werden.
Process for the preparation of a vat dye. In the main patent no. <B> 136050 </B> a process for the preparation of a valuable vat dye is described in which 1'-anthraquinonyl-6-aminobenzanthrone is treated with alkaline agents.
It has now been found that a similar valuable vat dye with excellent fastness properties can be obtained if 1'-anthraquinonyl-2-aminobenzanthr.one is treated with alkaline agents.
The new dye dissolves in concentrated sulfuric acid with a bluish, 4olet color, which changes to reddish-brown when a few drops of nitric acid are added. is colored.
<I> Example </I> Caustic potash melted in 60 parts at temperatures which can be between 230 to <B> 300 '</B>, 10 parts of 1'-anthraquinonyl-2-aminobenzanthrone (obtained for example by condensation of 2-chlorobenzanthrone with 1-aminoanthraquinone) with good stirring. ren slowly entered.
(It is advantageous to distribute the crystalline 1'-authrachinonyl-2-aminobenzanthrone by dissolving it in concentrated sulfuric acid and pouring the sulfuric acid solution into water.) When all the condensation product has been introduced, it will continue kept at the specified temperature until, the color:
substance formation no longer increases. The cooled melt is taken up with water and boiled until the dye has completely separated out, then it is filtered hot and washed with hot water. The most favorable temperature conditions for the formation of the black vat dye depend mainly on the water content of the caustic potash used.
With a very low water content, the optimum for the creation of the .black kupperi dye is at lower melting temperatures (approx. 230-250 '); </B> with a slightly higher water content the temperature of the melt must be approx. <B> 270 '</B> and higher.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE138239X | 1927-10-05 | ||
| CH136050T | 1928-07-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH138239A true CH138239A (en) | 1930-02-15 |
Family
ID=25712611
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH138239D CH138239A (en) | 1927-10-05 | 1928-07-07 | Process for the preparation of a vat dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH138239A (en) |
-
1928
- 1928-07-07 CH CH138239D patent/CH138239A/en unknown
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