CH300793A - Process for the preparation of a disazo dye. - Google Patents
Process for the preparation of a disazo dye.Info
- Publication number
- CH300793A CH300793A CH300793DA CH300793A CH 300793 A CH300793 A CH 300793A CH 300793D A CH300793D A CH 300793DA CH 300793 A CH300793 A CH 300793A
- Authority
- CH
- Switzerland
- Prior art keywords
- parts
- dye
- preparation
- disazo dye
- oxyquinoline
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/12—Disazo dyes from other coupling components "C"
- C09B31/14—Heterocyclic components
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zLun Hauptpatent Nr. 298509. Verfahren zur Herstellung eines Disazofarbstoffes. Es wurde gefunden, dass. man zu einem wertvollen Disazofarbstoff gelangt, wenn man eine Diazoverbindung des Aminomonoazofarb- stoffes der 'Formel
EMI0001.0011
mit 8-Oxychinolin kuppelt.
Der neue Farbstoff bildet ein blauschwar- zes Pulver, das Baumwolle nach dem ein oder zweibadzgen Nachkupferungsverfahren in wasch- und lichtechten, rotstichig violetten Tönen färbt.
Den Aminomonoazofarbstoff der obigen Formel erhält man durch Kupplung von di- azotiertem'2-Amino-l-oxybenzol 4-carbonsäitre- phenylamid mit 2-(4'-Aminophenyl).-amino-5- oxynaphthalin-7,3'-disulfonsEure. Die Kupp lung der Diazoverbindungen dieses Amino- azofarbstoffes mit dem 8-Oxychinolin erfolgt vorteilhaft in alkalischem Medium.
<I>Beispiel:</I> e22,8 Teile li-Oxy6#aminobenzol.4#carbon- säurephenylamid werden unter Zusatz von 6,9 Teilen Natriumnitrit und 27 Teilen 30 prozentiger Salzsäure bei 0 @diazotiert, und die. Diazoverbindang wird:
mit 41 Teilen 2- (4'-Aminophenyl)-amino-#5-oxynaphthalin-7,3'- disulfonsäure, die als Natriumsalz unter 'Zu satz von 3'0 Teilen Natriumcarbonat in 1000 Teilen Wasser gelöst wurde, vereinigt. Nach 15 Stunden wird der gebildete Farb stoff durch Zusatz. von. Natriumchlorid abge schieden und filtriert.
Der abgeschiedene Farbstoff wird nun in 10 Teilen 30prozentiger Natriumhydroxyd- lösung und 1000 Teilen Wasser gelöst und unter Zusatz von 6;9 Teilen Natriumnitrit und 30 Teilen 30prozentiger ':Salzsäure bei 0 dianotiert, die Diazoverbindung eine 'Stunde gerührt und hernach mit einer Lösung aus 14 Teilen 8-Oxychinolin, 100 Teilen Wasser und 12 Teilen 30prozentiger Salzsäure ver einigt.
Durch Zufliessenlassen einer Lösung von 75 Teilen wasserfreiem Natriumcarbonat in 250 Teilen Wasser wird das Ganze alka lisch gestellt und dann 15 Stunden gerührt. Der abgeschiedene Farbstoff wird filtriert und getrocknet,
<B> Additional patent </B> zLun main patent No. 298509. Process for the production of a disazo dye. It has been found that a valuable disazo dye is obtained if a diazo compound of the amino monoazo dye of the formula
EMI0001.0011
couples with 8-oxyquinoline.
The new dye forms a blue-black powder which, using the one or two bath post-copper plating process, dyes cotton in washable, lightfast, reddish purple tones.
The amino monoazo dye of the above formula is obtained by coupling diazo-2-amino-1-oxybenzene-4-carboxylic acid re-phenylamide with 2- (4'-aminophenyl) -amino-5-oxynaphthalene-7,3'-disulfonic acid. The coupling of the diazo compounds of this amino azo dye with the 8-oxyquinoline is advantageously carried out in an alkaline medium.
<I> Example: </I> e22.8 parts of li-Oxy6 # aminobenzol.4 # carboxylic acid phenylamide are @diazotized at 0 with the addition of 6.9 parts of sodium nitrite and 27 parts of 30 percent hydrochloric acid, and the. Diazo connection will:
with 41 parts of 2- (4'-aminophenyl) -amino- # 5-oxynaphthalene-7,3'-disulfonic acid, which was dissolved as the sodium salt with the addition of 3'0 parts of sodium carbonate in 1000 parts of water, combined. After 15 hours, the color is formed by addition. from. Sodium chloride separated out and filtered.
The deposited dye is then dissolved in 10 parts of 30 percent sodium hydroxide solution and 1000 parts of water and dianotized at 0 with the addition of 6; 9 parts of sodium nitrite and 30 parts of 30 percent hydrochloric acid, the diazo compound is stirred for one hour and then with a solution of 14 Parts of 8-oxyquinoline, 100 parts of water and 12 parts of 30 percent hydrochloric acid united ver.
The whole is made alkaline by flowing in a solution of 75 parts of anhydrous sodium carbonate in 250 parts of water and then stirred for 15 hours. The deposited dye is filtered and dried,
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH300793T | 1951-03-08 | ||
CH298509T | 1952-01-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH300793A true CH300793A (en) | 1954-08-15 |
Family
ID=25733963
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH300793D CH300793A (en) | 1951-03-08 | 1951-03-08 | Process for the preparation of a disazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH300793A (en) |
-
1951
- 1951-03-08 CH CH300793D patent/CH300793A/en unknown
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