CH246188A - Process for the production of a metallizable polyazo dye. - Google Patents
Process for the production of a metallizable polyazo dye.Info
- Publication number
- CH246188A CH246188A CH246188DA CH246188A CH 246188 A CH246188 A CH 246188A CH 246188D A CH246188D A CH 246188DA CH 246188 A CH246188 A CH 246188A
- Authority
- CH
- Switzerland
- Prior art keywords
- mole
- dye
- production
- oxybenzene
- brown
- 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
Zusatzpatent zum Hauptpatent Nr. 242845. Das vorliegende Patent betrifft ein Ver fahren zur Herstellung eines braunen Poly- azofarbstoffes und ist dadurch gekennzeich net, dass man 1 Mol Resorcin, 1 Mol der Ver bindung,
erhältlich durch Verseifen und Diazotiexen des Farbstoffes aus 1 Mol diazo- tiertem 4 -Nitro - 2 - amino -1- oxybenzol und 1 Mol 1-Acetamino-2-oxybenzol und 1 Mol der aus 1 Mol tetrazotiertem 4,
4'-Diamino- benzanilid und 1 Mol Salicylsäure erhält lichen Zwischenverbindung aufeinander ein wirken lässt.
<I>Beispiel:</I> 15,4 g 4-Nitro-2-amino-l-oxybenzol wer den wie üblich diazotiert und mit 15,1 g 1-Acetamino-2-oxybenzol, <B>13,3</B> g 30%iger Natronlauge und Wasser in Gegenwart von Soda gekuppelt. Der Monoazofarbstoff wird durch Zusatz von Salzsäure abgeschieden und filtriert. Er besitzt mutmasslich die Formel
EMI0001.0030
Durch Erhitzen mit verdünnter Natronlauge wird er verseift, durch Neutralisation mit Salzsäure abgeschieden und filtriert. Man löst den Farbstoff in Wasser und Natron lauge und lässt ihn nach Zugabe von 7 g Natriumnitrit in Salzsäure einfliessen.
Nach Beendigung der Diazotierung vereinigt man die Diazoverbindung mit einer Lösung von 11g Resorcin und Wasser in Gegenwart von Soda. Der Disazofarbstoff wird mit Koch- salz abgeschieden und filtriert. Er wird in Wasser unter Zugabe von Soda gelöst und mit der in üblicher Weise hergestellten Zwischenverbindung aus 22,7 g 4,4'-Diamino- benzanilid und 13,8 g Salicylsäure gekup pelt. Der Tetrakisazofarbstoff wird in der Wärme mit Kochsalz abgeschieden und fil triert.
Der neue Farbstoff stellt ein dunkles Pulver dar, das Baumwolle und regenerierte Cellulose in rotstichig braunen Tönen färbt. Beim Nachbehandeln mit Kupfersulfat wer den die Färbungen dunkelbraun und in der Wasch-, Licht-, Säure- und Alkaliechtheit erheblich verbessert.
Additional patent to the main patent No. 242845. The present patent relates to a process for the production of a brown poly azo dye and is characterized in that 1 mole of resorcinol, 1 mole of the compound,
obtainable by saponifying and diazotiexing the dye from 1 mole of diazo-tated 4-nitro-2-amino-1-oxybenzene and 1 mole of 1-acetamino-2-oxybenzene and 1 mole of 1 mole of tetrazotized 4,
4'-diamino benzanilide and 1 mole of salicylic acid, the intermediate compound that can be obtained can act on one another.
<I> Example: </I> 15.4 g of 4-nitro-2-amino-1-oxybenzene are diazotized as usual and with 15.1 g of 1-acetamino-2-oxybenzene, <B> 13.3 < / B> g of 30% sodium hydroxide solution and water coupled in the presence of soda. The monoazo dye is deposited by adding hydrochloric acid and filtered. He presumably has the formula
EMI0001.0030
It is saponified by heating with dilute sodium hydroxide solution, separated by neutralization with hydrochloric acid and filtered. The dye is dissolved in water and sodium hydroxide solution and, after adding 7 g of sodium nitrite, is allowed to flow into hydrochloric acid.
When the diazotization is complete, the diazo compound is combined with a solution of 11 g of resorcinol and water in the presence of soda. The disazo dye is deposited with common salt and filtered. It is dissolved in water with the addition of soda and kup pelt with the intermediate compound prepared in the customary manner from 22.7 g of 4,4'-diamino benzanilide and 13.8 g of salicylic acid. The tetrakisazo dye is deposited in the heat with table salt and filtered.
The new dye is a dark powder that dyes cotton and regenerated cellulose in reddish brown tones. When aftertreating with copper sulfate who the colorations dark brown and in the wash, light, acid and alkali fastness significantly improved.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH242845T | 1945-04-16 | ||
CH246188T | 1945-04-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH246188A true CH246188A (en) | 1946-12-15 |
Family
ID=25728764
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH246188D CH246188A (en) | 1945-04-16 | 1945-04-16 | Process for the production of a metallizable polyazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH246188A (en) |
-
1945
- 1945-04-16 CH CH246188D patent/CH246188A/en unknown
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