CH194954A - Process for the preparation of a new monoazo dye. - Google Patents
Process for the preparation of a new monoazo dye.Info
- Publication number
- CH194954A CH194954A CH194954DA CH194954A CH 194954 A CH194954 A CH 194954A CH 194954D A CH194954D A CH 194954DA CH 194954 A CH194954 A CH 194954A
- Authority
- CH
- Switzerland
- Prior art keywords
- preparation
- monoazo dye
- yellow
- new monoazo
- dye
- Prior art date
Links
Landscapes
- Coloring (AREA)
Description
Terfahren zur Herstellung eines neuen Nonoazofarbatoffes. Vorliegende Erfindung betrifft die Her stellung eines neuen Monoazofarbstoffes, wel cher Wolle in rein gelben Tönen färbt, die sehr gute Beständigkeit gegen intensives Waschen, Walken und Licht aufweisen.
Gemäss vorliegendem Verfahren wird der Farbstoff hergestellt durch Kuppeln von di- azotiertem Dodecyl-3-amino-4-methoxy-l-ben- zoat mit 1-(4'-Sulfophenyl)-3-methyl-5-pyr- azolon.
Beispiel: Eine Suspension von 33,5 Gewichtsteilen Dodecyl-3-amino-4-methoxy-l-benzoat in 250 Gewichtsteilen Wasser und 26 Gewichtsteilen 36 0%iger Salzsäure wird durch Zugabe von 6,9 Gewichtsteilen Natriumnitrit diazotiert. Die Lösung der Diazoverbindung wird nötigen falls filtriert und hierauf zu einer gekühlten, wässerigen Lösung (5 0 C) von 25,4 Gewichts teilen 1-(4'-Sulfophenyl)-3-methyl-5-pyrazolon gesetzt, die 15 0% Kochsalz i'rewicht für Vo lumen)
enthält und während des Zusetzens mittels Soda gegen Lackmus alkalisch ge halten wird. Die Kupplungsreaktion verläuft rasch. Nachdem sie beendet ist, erhitzt man das Gemisch auf<B>500</B> C, filtriert den Farb stoff ab und trocknet ihn auf irgendeine ge eignete Weise. Der neue Farbstoff stellt ein rötlichgelbes Pulver dar, das mit heissem Wasser eine seifige, gelbe Lösung bildet und sich in konzentrierter Schwefelsäure mit gelber Farbe löst.
Er gibt auf Wolle rein gelbe Töne, die bei Anwendung eines 2% Ammonacetat enthaltenden Farbbades intensivem Waschen, Walken und Licht sehr zut widerstehen.
The process of producing a new nonoazo carbate. The present invention relates to the manufacture of a new monoazo dye which dyes wool in pure yellow tones which have very good resistance to intensive washing, fulling and light.
According to the present process, the dye is prepared by coupling dodecyl 3-amino-4-methoxy-1-benzoate with diacotized dodecyl with 1- (4'-sulfophenyl) -3-methyl-5-pyrazolone.
Example: A suspension of 33.5 parts by weight of dodecyl 3-amino-4-methoxy-1-benzoate in 250 parts by weight of water and 26 parts by weight of 360% hydrochloric acid is diazotized by adding 6.9 parts by weight of sodium nitrite. The solution of the diazo compound is filtered if necessary and then added to a cooled, aqueous solution (5 ° C.) of 25.4 parts by weight of 1- (4'-sulfophenyl) -3-methyl-5-pyrazolone, the 15% sodium chloride i'weight for volume)
and is kept alkaline against litmus during the addition of soda. The coupling reaction is rapid. When it is finished, the mixture is heated to <B> 500 </B> C, the dye is filtered off and dried in any suitable way. The new dye is a reddish yellow powder that forms a soapy, yellow solution with hot water and dissolves in concentrated sulfuric acid with a yellow color.
It gives pure yellow tones on wool, which are very resistant to intensive washing, tumbling and light when using a dye bath containing 2% ammonium acetate.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB194954X | 1935-11-21 | ||
CH191569T | 1936-11-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH194954A true CH194954A (en) | 1937-12-31 |
Family
ID=25722147
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH194954D CH194954A (en) | 1935-11-21 | 1936-11-05 | Process for the preparation of a new monoazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH194954A (en) |
-
1936
- 1936-11-05 CH CH194954D patent/CH194954A/en unknown
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CH194954A (en) | Process for the preparation of a new monoazo dye. | |
CH194955A (en) | Process for the preparation of a new monoazo dye. | |
CH194952A (en) | Process for the preparation of a new monoazo dye. | |
DE617665C (en) | Process for the preparation of monoazo dyes | |
CH194956A (en) | Process for the preparation of a new monoazo dye. | |
CH119895A (en) | Process for the production of a new dye. | |
CH194953A (en) | Process for the preparation of a new monoazo dye. | |
CH194950A (en) | Process for the preparation of a new monoazo dye. | |
CH132803A (en) | Process for the preparation of a stain dye. | |
CH210500A (en) | Process for the preparation of a monoazo dye. | |
CH191569A (en) | Process for the preparation of a new monoazo dye. | |
CH194948A (en) | Process for the preparation of a new monoazo dye. | |
CH210499A (en) | Process for the preparation of a monoazo dye. | |
CH164439A (en) | Process for the production of a chromium-containing dye which coloring in red shades. | |
CH207510A (en) | Process for the preparation of a monoazo dye. | |
CH194949A (en) | Process for the preparation of a new monoazo dye. | |
CH193081A (en) | Process for the preparation of a new monoazo dye. | |
CH164442A (en) | Process for the production of a chromium-containing dye which coloring in red shades. | |
CH287086A (en) | Process for the preparation of a chromium-containing azo dye. | |
CH337593A (en) | Process for the preparation of chromium-containing monoazo dyes | |
CH237724A (en) | Process for the preparation of a new monoazo dye. | |
CH144489A (en) | Process for the preparation of a disazo dye. | |
CH144485A (en) | Process for the preparation of a disazo dye. | |
CH194951A (en) | Process for the preparation of a new monoazo dye. | |
CH209527A (en) | Process for the preparation of an azo dye. |