CH171961A - Process for the preparation of a dye. - Google Patents
Process for the preparation of a dye.Info
- Publication number
- CH171961A CH171961A CH171961DA CH171961A CH 171961 A CH171961 A CH 171961A CH 171961D A CH171961D A CH 171961DA CH 171961 A CH171961 A CH 171961A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- preparation
- oleum
- sulfonic acid
- blue
- Prior art date
Links
Landscapes
- Coloring (AREA)
- Paper (AREA)
Description
Verfahren zur Darstellung eines Farbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Darstellung eines Farbstoffes welches dadurch gekennzeichnet ist, dass man den aus der Verbindung folgender Formel
EMI0001.0003
durch Erhitzen in einem hochsiedenden Lö sungsmittel erhältlichen Farbstoff mit einem Sulfonierur)gsr::ittel behandelt.
<I>Beispiel:</I> Gewichtsteile des Farbstoffes folgender wahrscheinlicher Konstitution
EMI0001.0006
der wie oben angegeben erhältlich ist, werden in 70 Gewichtsteilen Oleum von 200/0 S03 bei 20-30 C einige Stunden verrührt. Es ist Sulfierung eingetreten. Man gibt das Re aktionsgemisch auf Eis, und die Sulfosäure- scheidet sich als blauer Niederschlag aus. Man saugt ab und wäscht mit Kochsalzlösung neutral.
Die Sulfosäure ist in Wasser mit blauer Farbe löslich und färbt tierische, pflanzliche, künstliche Faser, sowie gemischte Gewebe in grünstig blauen Tönen an. Die Färbungen zeichnen sieh durch hervorragende Echtheitseigenschaften aus. Führt man diese Sulfonsäuren in das entsprechende Barium- oder Kalziumsalz über, so erhält man wert volle blaue Pigmentfarbstoffe, die für die Papier-, Tapeten- und Lackindustrie von Interesse sind.
Das Pigment kann auch unter andern Bedingungen sulfoniert werden. So zum Bei spiel kann man an Stelle von Oleum von 20 % SOa andere Sulfonierungsmittel von schwächerer oder stärkerer Wirkung bei nie deren oder höheren Temperaturen verwenden.
Process for the preparation of a dye. The subject of the present patent is a process for the preparation of a dye which is characterized in that one is obtained from the compound of the following formula
EMI0001.0003
treated with a sulfonating agent by heating in a high-boiling solvent.
<I> Example: </I> parts by weight of the dye of the following probable constitution
EMI0001.0006
which is available as stated above, are stirred in 70 parts by weight of oleum of 200/0 SO3 at 20-30 C for a few hours. Sulphation has occurred. The reaction mixture is poured onto ice and the sulfonic acid separates out as a blue precipitate. It is filtered off with suction and washed neutral with saline.
The sulfonic acid is soluble in water with a blue color and stains animal, vegetable, artificial fibers and mixed fabrics in greenish blue tones. The dyeings are distinguished by their excellent fastness properties. If these sulfonic acids are converted into the corresponding barium or calcium salt, valuable blue pigments are obtained, which are of interest to the paper, wallpaper and paint industries.
The pigment can also be sulfonated under other conditions. For example, instead of oleum of 20% SOa, other sulphonating agents with a weaker or stronger effect at never their or higher temperatures can be used.
Claims (1)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE171961X | 1932-04-29 | ||
| CH168732T | 1933-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH171961A true CH171961A (en) | 1934-09-15 |
Family
ID=25718615
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH171961D CH171961A (en) | 1932-04-29 | 1933-04-27 | Process for the preparation of a dye. |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH171961A (en) |
-
1933
- 1933-04-27 CH CH171961D patent/CH171961A/en unknown
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