CH294245A - Process for the preparation of a trisazo dye. - Google Patents
Process for the preparation of a trisazo dye.Info
- Publication number
- CH294245A CH294245A CH294245DA CH294245A CH 294245 A CH294245 A CH 294245A CH 294245D A CH294245D A CH 294245DA CH 294245 A CH294245 A CH 294245A
- Authority
- CH
- Switzerland
- Prior art keywords
- trisazo dye
- amino
- parts
- oxy
- methyl
- 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
- C09B35/366—D is diphenyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Paper (AREA)
Description
'lnsatzpatent 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 2- Methy 1-4- (3"- methyl-4"-amino-phenyl) -4'- oxy- 3'-carboxy-1,1'-azobenzol mit 2 -- (" -Amino- ben7oylamino )- 5 -oxy-naphthalin-7-sulfonsäure kuppelt,
den gebildeten Aminodisazofarbstoff weiterdiazotiert und mit 1 Mol 1,3=Dioxy-ben- zol vereinigt.
Der erhaltene nette Trisazofarbstoff stellt ein braunes Pulver dar, das sieh in Wasser mit roter und in konzentrierter Schwefel säure mit blauer Farbe löst und Cellulose- fasern in blaustiebig roten Tönen färbt.
Beispiel: 21,2 Teile 3,3'-Dimethyl-4,4'-diamino-di- phenyl werden bei 0 in einer Lösung von 58 Teilen Salzsäure 30 % und 180 Teilen Was ser mit 13,8 Teilen Natriumnitrit tetrazotiert. Die Tetrazolösung wird zuerst sodaalkalisch mit 14,3 Teilen 2-Oxy-benzol.-1-carbonsäure und dann in bicarbonatalkalischer Lösung mit 35,8 Teilen 2-(3'-Amino-benzoylamino)-5-oxy- naphthalin-7-sulfonsäure bei 40 gekuppelt.
Der fertig gebildete Disazofarbstoff wird ab filtriert und in 1000 Teilen Nasser mit 1;6 Teilen Natronlauge 100 6 suspendiert. Man versetzt mit. 7,6 Teilen Natriumnitrit und diazotiert bei 10 durch Zustürzen von 48 Tei len 30 % iger Salzsäure. Nach 6 Stunden lässt man die Suspension zu einer sodaalkalischen Lösung von 11,0 Teilen 1,3-Dioxy-benzol zu fliessen. Die Kupplung ist rasch beendet. Man scheidet den Trisazofarbstoff mit Kochsalz ab, filtriert und trocknet. Er hat die Formel.
EMI0001.0047
und ist ein braunes Pulver, das sich in Wasser mit roter und in konzentrierter Schwefelsäure mit blauer Farbe löst.. Cellulosefasern werden in blaustichig roten Tönen angefärbt, die be- son < lcrs wa.ssercelit und gut ä.tzbar sind.
Insertion patent for main patent no. 291811. Process for the production of a trisazo dye. 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 2-methy 1-4- (3 "-methyl-4" -amino-phenyl) -4'-oxy-3'-carboxy-1,1'-azobenzene with 2 - ("-Aminoben7oylamino) -5 -oxy-naphthalene-7-sulfonic acid couples,
the aminodisazo dye formed is further diazotized and combined with 1 mol of 1,3 = dioxybenzene.
The nice trisazo dye obtained is a brown powder which dissolves in water with red and in concentrated sulfuric acid with a blue color and dyes cellulose fibers in bluish red tones.
Example: 21.2 parts of 3,3'-dimethyl-4,4'-diamino-diphenyl are tetrazotized at 0 in a solution of 58 parts of 30% hydrochloric acid and 180 parts of water with 13.8 parts of sodium nitrite. The tetrazo solution is first alkaline with 14.3 parts of 2-oxy-benzene-1-carboxylic acid and then in an alkaline bicarbonate solution with 35.8 parts of 2- (3'-amino-benzoylamino) -5-oxynaphthalene-7-sulfonic acid coupled at 40.
The completely formed disazo dye is filtered off and suspended in 1000 parts of water with 1.6 parts of 100% sodium hydroxide solution. One adds. 7.6 parts of sodium nitrite and diazotized at 10 by tumbling 48 parts of 30% hydrochloric acid. After 6 hours, the suspension is allowed to flow into a soda-alkaline solution of 11.0 parts of 1,3-dioxy-benzene. The coupling ends quickly. The trisazo dye is separated off with common salt, filtered and dried. He has the formula.
EMI0001.0047
and is a brown powder that dissolves in water with red and in concentrated sulfuric acid with blue color. Cellulose fibers are dyed in bluish red tones, which are particularly water-soluble and easily etchable.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH294245T | 1950-12-15 | ||
CH291811T | 1954-07-09 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH294245A true CH294245A (en) | 1953-10-31 |
Family
ID=25733151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH294245D CH294245A (en) | 1950-12-15 | 1950-12-15 | Process for the preparation of a trisazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH294245A (en) |
-
1950
- 1950-12-15 CH CH294245D patent/CH294245A/en unknown
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