CH294244A - Process for the preparation of a trisazo dye. - Google Patents
Process for the preparation of a trisazo dye.Info
- Publication number
- CH294244A CH294244A CH294244DA CH294244A CH 294244 A CH294244 A CH 294244A CH 294244D A CH294244D A CH 294244DA CH 294244 A CH294244 A CH 294244A
- Authority
- CH
- Switzerland
- Prior art keywords
- parts
- amino
- trisazo dye
- dye
- oxy
- 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
- C09B35/36—Trisazo dyes of the type
- C09B35/374—D contains 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
<B>Zusatzpatent</B> zum Hauptpatent Nr. 291811. Verfahren zur Herstellung eines Trisazofarbstoffes. Gegenstand vorliegenden Patentes ist ein Verfahren zur Herstellung eines Trisazofarb- stoffes. Das Verfahren ist dadurch gekenn zeichnet, dass man die Diazoverbindung von 4 - (4"- Amino - carbanilino) - 4'- oxy - 3'- ca.rboxy- 1,1'-azobenzol mit 2- (4'-Methyl-3'-amino-ben- zoyiamino)
- 5 -oxy-naphthalin-7-sulfonsäure kuppelt, den gebildeten Aminodisazofarbstoff weiterdiazotiert und mit 1 '.Hol 1,3-Dioxyben- zol vereinigt.
Der erhaltene neue Trisazofarbstoff stellt ein braunes Pulver dar, das sich in Wasser und in konzentrierter Schwefelsäure mit roter Farbe löst und Cellulosefasern in roten Tönen färbt.
<I>Beispiel:</I> Man tetrazotiert 22,7 Teile 1-(4'-Amino- benzoylamino)-4-amino-benzol bei 10 mit 13,8 Teilen Natriumnitrit wie üblich und kuppelt zuerst sodaalkalisch mit 15,2 Teilen 2-Oxy- benzol-l-carbonsäure. Ist das Zwischenprodukt fertig, wird die Suspension mit 25 Teilen 30%iger Salzsäure neutralisiert und bei 40 mit einer Lösung von 37,2 Teilen.
2-(4'-Methyl- 3'-amino-benzoylamino) -5-oxy-naphthalin-7- sulfonsäure und 45,4 Teilen Natriumbicarbo- nat vereinigt. Der fertige Disazofarbstoff wird sodaalkalisch abfiltriert und in 1000 Teilen Wasser und 1,6 Teilen Natronlauge 100 % suspendiert. Man diazotiert nach Zu gabe von 7,6 Teilen Natriumnitrit bei 10 durch Zustürzen von 48 Teilen Salzsäure 30 %.
Nach Beendigung der Diazotierung kuppelt man durch Zulaufen der Suspension zu einer Lösung von 11,0 Teilen 1,3-Dioxy-benzol und 50 Teilen Soda in 110 Teilen Wasser. Der Trisazofarbstoff der Formel
EMI0001.0045
wird bei 60 mit 55 Teilen Kochsalz abgeschie den, abfiltriert und getrocknet. Als braunes Pulver löst sich der Farbstoff in Wasser und in konzentrierter Schwefelsäure mit roter Farbe. Er färbt Cellulosefasern in roten Tönen, die sehr wasserecht sind und sich gut ätzen lassen.
<B> Additional patent </B> to main patent no. 291811. Process for the production of a trisazo dye. The subject of the present patent is a process for the production of a trisazo dye. The process is characterized in that the diazo compound of 4 - (4 "- amino - carbanilino) - 4'-oxy - 3'- ca.rboxy-1,1'-azobenzene with 2- (4'-methyl- 3'-amino-benzoyiamino)
- Coupling 5-oxy-naphthalene-7-sulfonic acid, further diazotizing the aminodisazo dye formed and combining it with 1 '.
The new trisazo dye obtained is a brown powder which dissolves in water and in concentrated sulfuric acid with a red color and dyes cellulose fibers in red shades.
<I> Example: </I> 22.7 parts of 1- (4'-aminobenzoylamino) -4-aminobenzene are tetrazotized at 10 with 13.8 parts of sodium nitrite as usual and coupled first with 15.2 parts in a soda-alkaline manner 2-oxybenzene-1-carboxylic acid. When the intermediate product is ready, the suspension is neutralized with 25 parts of 30% hydrochloric acid and 40 with a solution of 37.2 parts.
2- (4'-Methyl-3'-aminobenzoylamino) -5-oxy-naphthalene-7-sulfonic acid and 45.4 parts of sodium bicarbonate combined. The finished disazo dye is filtered off using alkaline soda and suspended in 1000 parts of water and 1.6 parts of 100% sodium hydroxide solution. After adding 7.6 parts of sodium nitrite at 10, 48 parts of hydrochloric acid are diazotized at 30%.
When the diazotization is complete, coupling is carried out by running the suspension into a solution of 11.0 parts of 1,3-dioxybenzene and 50 parts of soda in 110 parts of water. The trisazo dye of the formula
EMI0001.0045
is deposited at 60 with 55 parts of sodium chloride, filtered off and dried. As a brown powder, the dye dissolves in water and in concentrated sulfuric acid with a red color. It dyes cellulose fibers in red tones, which are very waterfast and easy to etch.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH294244T | 1950-12-15 | ||
CH291811T | 1954-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH294244A true CH294244A (en) | 1953-10-31 |
Family
ID=25733150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH294244D CH294244A (en) | 1950-12-15 | 1950-12-15 | Process for the preparation of a trisazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH294244A (en) |
-
1950
- 1950-12-15 CH CH294244D patent/CH294244A/en unknown
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