CH265722A - Process for the preparation of a copper-compatible polyazo dye. - Google Patents
Process for the preparation of a copper-compatible polyazo dye.Info
- Publication number
- CH265722A CH265722A CH265722DA CH265722A CH 265722 A CH265722 A CH 265722A CH 265722D A CH265722D A CH 265722DA CH 265722 A CH265722 A CH 265722A
- Authority
- CH
- Switzerland
- Prior art keywords
- copper
- amino
- preparation
- compatible
- polyazo dye
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/28—Disazo dyes characterised by the tetrazo component the tetrazo component containing two aryl nuclei linked by at least one of the groups —CON<, —SO2N<, —SO2—, or —SO2—O—
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 2ö1125. <B>Verfahren zur Herstellung eines kupferbaren</B> Polyazofarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupferbaren Polyazofarbstoffes. Das Verfahren ist da durch gekennzeichnet, da13 man 1 Mol der Tetrazoverbindung von 1-(3'-Amino-4'-oxy- benzoylamino) -4-amino-benzol-3-carl)onsäure mit 2 Mol 1- (4'-Amino-phenyl)
-3-meth3-1-5- pyrazolon kuppelt. <I>Beispiel:</I> 28,7 Teile 1- (3'-Amino-4'-oxy-benzoyl- amino) -4-amino-benzol-3-carbonsäure werden in 400 Teilen Wasser mit 8 Teilen Natronlauge kalt gelöst, mit 13,8 Teilen Natriumnitrit ver mischt und in der Kälte unter Rühren auf 40 Teile konz. Salzsäure und 80 Teile Wasser aufgetropft. Nach dein Abstumpfen der über- sehüssigen =Mineralsäure mit Soda vereinigt
EMI0001.0024
wird mit Kochsalz abgeschieden,
abfiltriert und getrocknet. Der erhaltene neue Disazofarbstoff stellt ein dunkelbraunes Pulver dar, das sich in Wasser mit gelbbrauner und in konz. Schwe felsäure mit gelber Farbe löst und Fasern aus natürlicher oder regenerierter Cellulose nachgekupfert in gelbbraunen Tönen anfärbt, welche vorzügliche Echtheiten aufweisen. man die Tetrazoverbindung mit einer alkali schen Lösung von 37,8 Teilen 1-(4'-Amino- phenyl)-3-methyl-5-pyrazolon in 800 Teilen Wasser und 20 Teilen Soda.
Die Kupplung tritt sofort ein und nach mehreren Stunden. Rühren bei Zimmertemperatur ist keine Di- azoreaktion mehr nachweisbar. Der erhaltene Farbstoff von der Formel
Additional patent to main patent No. 2ö1125. <B> Process for the production of a copperable </B> polyazo dye. The present patent relates to a process for the preparation of a copperable polyazo dye. The process is characterized in that 1 mole of the tetrazo compound of 1- (3'-amino-4'-oxybenzoylamino) -4-aminobenzene-3-carl) onic acid is mixed with 2 moles of 1- (4'- Aminophenyl)
-3-meth3-1-5- pyrazolone couples. <I> Example: </I> 28.7 parts of 1- (3'-amino-4'-oxy-benzoyl-amino) -4-amino-benzene-3-carboxylic acid are cold in 400 parts of water with 8 parts of sodium hydroxide solution dissolved, mixed ver with 13.8 parts of sodium nitrite and concentrated in the cold with stirring to 40 parts. Hydrochloric acid and 80 parts of water were added dropwise. After blunting the excess mineral acid, combined with soda
EMI0001.0024
is separated with common salt,
filtered off and dried. The new disazo dye obtained is a dark brown powder, which in water with yellow-brown and in conc. Sulfur acid dissolves with a yellow color and stains fibers made from natural or regenerated cellulose after copper-plating in yellow-brown tones, which have excellent fastness properties. the tetrazo compound with an alkaline solution of 37.8 parts of 1- (4'-aminophenyl) -3-methyl-5-pyrazolone in 800 parts of water and 20 parts of soda.
The coupling occurs immediately and after several hours. Stirring at room temperature no longer shows any diazo reaction. The obtained dye of the formula
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH265722T | 1947-09-15 | ||
CH261125T | 1948-08-06 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH265722A true CH265722A (en) | 1949-12-15 |
Family
ID=25730366
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH265722D CH265722A (en) | 1947-09-15 | 1947-09-15 | Process for the preparation of a copper-compatible polyazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH265722A (en) |
-
1947
- 1947-09-15 CH CH265722D patent/CH265722A/en unknown
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