CH189315A - Process for the production of a new anthraquinone dye. - Google Patents
Process for the production of a new anthraquinone dye.Info
- Publication number
- CH189315A CH189315A CH189315DA CH189315A CH 189315 A CH189315 A CH 189315A CH 189315D A CH189315D A CH 189315DA CH 189315 A CH189315 A CH 189315A
- Authority
- CH
- Switzerland
- Prior art keywords
- blue
- production
- amino
- anthraquinone dye
- cetylating
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen Anthrachinonfarbstoffes. Es wurde gefunden, dass man einen neuen Anthrachinonfarbstoff erhält durch Behand lung der 1-Amino-4-p=sulfoanilido-2-mercap- toanthrachinon mit einem cetylierenden Agens.
Als cetylierendes Agens kann Cetylbro- mid dienen.
Der Farbstoff ist blau, in konzentrierter Schwefelsäure mit rötlich-violetter Farbe löslich, welche durch Zusatz von Formal dehyd blau wird. Er ist in Wasser löslich; die Lösung ist blau und fühlt sich seifig an; er färbt Wolle in blauen, Tönen von sehr guter Wasch- und Walkechtheit.
Im folgenden Beispiel, durch welches die Erfindung nicht begrenzt wird, sind die Teile Gewichtsteile. Beispiel: Einer Lösung von 1-Amino-4-p-,sulfo- anilido-2-mercaptoanthrachinon, welche durch Kochen von 12 Teilen 2-Brom-l-amino-4-p- sulfoanilidoanthrachinon in 120 Teilen Was ser mit 12 'Teilen einer 30%igen Natrium hydrosulfidlösung während einer Stunde erhalten wird, werden 10 Teile Cetylbromid zugesetzt und das Gemisch wird eine Stunde lang gekocht,
hierauf abgekühlt und der Farbstoff abfiltriert. Der Rückstand wird mit 3 Teilen aktiver Kohle in 700 Teilen heissen Wassers erwärmt, filtriert und durch Zusetzen von Salz zum Filtrat wird der Farbstoff ausgefällt. Der Farbstoff wird ab filtriert und bei<B>50'</B> C getrocknet.
Process for the production of a new anthraquinone dye. It has been found that a new anthraquinone dye is obtained by treating the 1-amino-4-p = sulfoanilido-2-mercaptoanthraquinone with a cetylating agent.
Cetyl bromide can serve as the cetylating agent.
The dye is blue, soluble in concentrated sulfuric acid with a reddish-violet color, which turns blue when formaldehyde is added. It is soluble in water; the solution is blue and soapy to the touch; it dyes wool in blue shades of very good wash and milled fastness.
In the following example, which does not limit the invention, parts are parts by weight. Example: A solution of 1-amino-4-p-, sulfo-anilido-2-mercaptoanthraquinone, which is obtained by boiling 12 parts of 2-bromo-l-amino-4-p-sulfoanilidoanthraquinone in 120 parts of water with 12 parts a 30% sodium hydrosulfide solution is obtained for one hour, 10 parts of cetyl bromide are added and the mixture is boiled for one hour,
then cooled and the dye filtered off. The residue is heated with 3 parts of active charcoal in 700 parts of hot water, filtered and the dye is precipitated by adding salt to the filtrate. The dye is filtered off and dried at <B> 50 '</B> C.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB189315X | 1934-03-19 | ||
CH187124T | 1935-03-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH189315A true CH189315A (en) | 1937-02-15 |
Family
ID=25721487
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH189315D CH189315A (en) | 1934-03-19 | 1935-03-19 | Process for the production of a new anthraquinone dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH189315A (en) |
-
1935
- 1935-03-19 CH CH189315D patent/CH189315A/en unknown
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