CH285001A - Process for the preparation of a copper-compatible tetrakisazo dye. - Google Patents
Process for the preparation of a copper-compatible tetrakisazo dye.Info
- Publication number
- CH285001A CH285001A CH285001DA CH285001A CH 285001 A CH285001 A CH 285001A CH 285001D A CH285001D A CH 285001DA CH 285001 A CH285001 A CH 285001A
- Authority
- CH
- Switzerland
- Prior art keywords
- dye
- copper
- parts
- compatible
- preparation
- 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
- C09B35/38—Trisazo dyes ot the type
- C09B35/40—Trisazo dyes ot the type the component K being a dihydroxy or polyhydroxy compound
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 282092. Verfahren zur Herstellung eines kupferbaren Tetrakisazofarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines kupferbaren Tetrakisazofarbstoffes. Das Verfahren ist da durch gekennzeichnet, dass man 1 Mol der Tetrazoverbindung von 1-(4'-Aniino-benzoyl- amino)
-4-amino-benzol einerseits mit 1 Mol des Disazofarbstoffes der Formel
EMI0001.0009
und anderseits mit 1 Mol 3-Methyl-5-pyrazolon vereinigt.
Der erhaltene neue Tetrakisazofarbstoff stellt ein dunkles Pulver dar und löst sieh in Wasser und konz. Schwefelsäure mit brauner Farbe.
<I>Beispiel:</I> Man kuppelt die aus 15,3 Teilen 1.-Amino- 4-oxybenzol-3-carbonsäure hergestellte Diazo- niumverbindung in Gegenwart von 29,2 Teilen 300 /0iger Natronlauge und 25 Teilen Natrium- carbonat mit 18,7 Teilen 1-Oxalylamino-2-oxy- benzol und verseift den gebildeten Monoazo- farbstoff in der Hitze mit verdünnter Natron lauge.
Hierauf wird der Farbstoff in An- wesenheit von 20% Kochsalz kalt mit 7,6 Tei- len Natriumnitrit und 50 Teilen Salzsäure <B>(d:
1,16)</B> weiterdiazotiert. Die Diazonium- verbindung wird abfiltriert und als Anschläm- niung mit 11,0 Teilen 1,3-Dioxy-benzol und 40 Teilen Natriumcarbonat gekuppelt.
Der Disazofarbstoff wird mit 100 Teilen Salz säure ausgefällt, abfiltriert und mit Wasser und 20 Teilen 30 % iger Natronlauge gelöst. Man gibt nun diese Lösung zur Tetrazover- bindung aus 19,1 Teilen 1-(4'-Amino-benzoyl- amino)-4-amino-benzol. Nachdem sich das Zwi schenprodukt in schwach essigsaurer Lösung gebildet hat, wird mit.
8,4 Teilen 3-Methyl- 5-py razolon in neutraler, wässriger Lösung und anschliessend mit 7,2 Teilen Natrium- bicarbonat in 144 Teilen Wasser versetzt. Der Tetrakisazofarbstoff wird heiss abfiltriert und getrocknet.
Der Farbstoff bildet ein dunkles Pulver und löst sieh in Wasser und konz. Schwefel säure mit brauner Farbe. Er färbt Cellulose- fasern in braunen Tönen, die mit- Kupfersul fat behandelt sehr gute Echtheiten aufweisen.
<B> Additional patent </B> to main patent no. 282092. Process for the production of a copper-compatible tetrakisazo dye. The present patent relates to a process for the preparation of a copper-compatible tetrakisazo dye. The process is characterized in that 1 mol of the tetrazo compound of 1- (4'-aniino-benzoyl-amino)
-4-amino-benzene on the one hand with 1 mol of the disazo dye of the formula
EMI0001.0009
and on the other hand combined with 1 mole of 3-methyl-5-pyrazolone.
The new tetrakisazo dye obtained is a dark powder and dissolves in water and conc. Sulfuric acid with a brown color.
<I> Example: </I> The diazonium compound produced from 15.3 parts of 1-amino-4-oxybenzene-3-carboxylic acid is coupled in the presence of 29.2 parts of 300/0 sodium hydroxide solution and 25 parts of sodium carbonate with 18.7 parts of 1-oxalylamino-2-oxybenzene and saponified the monoazo dye formed in the heat with dilute sodium hydroxide solution.
The dye is then cold, in the presence of 20% common salt, with 7.6 parts of sodium nitrite and 50 parts of hydrochloric acid <B> (d:
1.16) further diazotized. The diazonium compound is filtered off and coupled as a slurry with 11.0 parts of 1,3-dioxybenzene and 40 parts of sodium carbonate.
The disazo dye is precipitated with 100 parts of hydrochloric acid, filtered off and dissolved with water and 20 parts of 30% strength sodium hydroxide solution. This solution is now added to the tetrazo compound from 19.1 parts of 1- (4'-aminobenzoylamino) -4-aminobenzene. After the intermediate product has formed in weak acetic acid solution, is with.
8.4 parts of 3-methyl-5-py razolone in neutral, aqueous solution and then 7.2 parts of sodium bicarbonate in 144 parts of water. The tetrakisazo dye is filtered off while hot and dried.
The dye forms a dark powder and dissolves in water and conc. Sulfuric acid with a brown color. It dyes cellulose fibers in brown shades which, when treated with copper sulfate, have very good fastness properties.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH285001T | 1949-11-25 | ||
CH282092T | 1949-11-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH285001A true CH285001A (en) | 1952-08-15 |
Family
ID=25732148
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH285001D CH285001A (en) | 1949-11-25 | 1949-11-25 | Process for the preparation of a copper-compatible tetrakisazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH285001A (en) |
-
1949
- 1949-11-25 CH CH285001D patent/CH285001A/en unknown
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