CH287106A - Process for the preparation of a chromium-containing azo dye. - Google Patents
Process for the preparation of a chromium-containing azo dye.Info
- Publication number
- CH287106A CH287106A CH287106DA CH287106A CH 287106 A CH287106 A CH 287106A CH 287106D A CH287106D A CH 287106DA CH 287106 A CH287106 A CH 287106A
- Authority
- CH
- Switzerland
- Prior art keywords
- chromium
- azo dye
- dyes
- dye
- containing azo
- 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
- C09B45/00—Complex metal compounds of azo dyes
- C09B45/02—Preparation from dyes containing in o-position a hydroxy group and in o'-position hydroxy, alkoxy, carboxyl, amino or keto groups
- C09B45/14—Monoazo compounds
- C09B45/16—Monoazo compounds containing chromium
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 284075. Verfahren zur Herstellung eines chromhaltigen Azofarbstoffes. Es wurde gefunden, dass man zu einem netten wertvollen, chromhaltigen Azofarbstoff gelangt, wenn man auf ein Gemisch der zwei Monoazofarbstoffe, die den folgenden Formeln
EMI0001.0006
entsprechen, chromabgebende Mittel derart einwirken lässt, dass ein chromhaltiger Azo- farbstoff entsteht, der je ein Molekül der zwei Ausgangsmonoazofarbstoffe an ein Chrom atom komplex gebunden enthält.
Der neue chromhaltige Farbstoff bildet ein violettes Pulver, das sich in Wasser mit blauer und in konzentrierter Schwefelsäure mit. roter Farbe löst und Wolle aus neutralem oder schwach essigsaurem Bade in grauen Tönen färbt.
Die zwei beim vorliegenden Verfahren als Ausgangsstoffe dienenden Monoazofarbstoffe können nach an Sieh bekannten Methoden her gestellt werden, indem man diazotiertes 2- Amino -1- oxybenzol - 4- sulfonsäure -N-pheny 1- amid mit 1-Acetylamino-7-oxynaphthalin und diazotiertes 2-Amin.o-l-oxybenzol-4-sulfon- säureamidmit 1-n-Butyrylamino-7-oxynaph- thalin
jeweils in alkalischem Medium kuppelt. Über die zu verwendenden chromabgeben den Mittel und Reaktionsbedingungen gibt das Hauptpatent Auskunft.
<I>Beispiel:</I> 18,8 Teile 2-Amino-l-oxybenzol-4-sulfon- säureamid werden in 200 Teilen Wasser und 15 Volumteilen 10-n-Salzsäure aufgeschlämmt und bei 5 bis 10 mit 25 Volumteilen 4-n-Na- triumnit.ritlösung diazotiert. Die durch Zu gabe von Natriumcarbonat neutralisierte Di- azoverbindung lässt man einlaufen in eine mit Eis auf 0 abgekühlte Lösung von 22,
9 Teilen 1-n-Butyrylamino-7-oxynaphthalin in 52 Vo- lumteil.en 2-n=Natriiimhydroxydlösung und 50 Volumteilen 2-n-Natriumcarbonatlösung. Nach beendeter Kupplung wird der abgeschiedene Farbstoff filtriert und mit verdünnter Na t.riumchloridlösung gewaschen und getrocknet.
42,8 Teile des so erhaltenen Farbstoffes und 47,6 Teile des aus 2-Amino-l-oxybenzol-4-sul- fonsäure-N-phenylamid und 1-Acetylamino-7- oxynaphthalin naeh ähnlicher Methode er haltenen Farbstoffes werden in 3000 Teilen Wasser aufgeschlämmt und mit 220 Teilen einer Lösung von ehromsalieylsaurem Na trium mit einem Chromgehalt von 2,61/o ver setzt. Naeh 6 Stunden Kochen am Riiekfluss- kühler ist die Chromierung beendet.
Die er haltene Chromverbindung wird durch Na- triumchloridmigabe abgeschieden und abfil- triert.
Additional patent to main patent No. 284075. Process for the production of a chromium-containing azo dye. It has been found that a nice, valuable chromium-containing azo dye can be obtained by using a mixture of the two monoazo dyes having the following formulas
EMI0001.0006
correspond, lets chromium-releasing agents act in such a way that a chromium-containing azo dye is created, which contains one molecule of each of the two starting monoazo dyes bound to a chromium atom in complex.
The new chromium-containing dye forms a violet powder, which is mixed in water with blue and in concentrated sulfuric acid. red color dissolves and dyes wool from neutral or weakly acetic acid bath in gray tones.
The two monoazo dyes used as starting materials in the present process can be prepared by methods known per se by diazotized 2-amino -1-oxybenzene - 4-sulfonic acid -N-pheny 1- amide with 1-acetylamino-7-oxynaphthalene and diazotized 2-aminol-oxybenzene-4-sulfonic acid amide with 1-n-butyrylamino-7-oxynaphthalene
each couple in an alkaline medium. The main patent provides information on the chromium-releasing agents and reaction conditions to be used.
<I> Example: </I> 18.8 parts of 2-amino-1-oxybenzene-4-sulfonic acid amide are slurried in 200 parts of water and 15 parts by volume of 10N hydrochloric acid and, at 5 to 10, with 25 parts by volume of 4- diazotized n-sodium nitrite solution. The diazo compound neutralized by adding sodium carbonate is allowed to run into a solution of 22, which has been cooled to 0 with ice.
9 parts of 1-n-butyrylamino-7-oxynaphthalene in 52 parts by volume of 2-n = sodium hydroxide solution and 50 parts by volume of 2-n sodium carbonate solution. After the coupling has ended, the deposited dye is filtered off, washed with dilute sodium chloride solution and dried.
42.8 parts of the dye thus obtained and 47.6 parts of the dye obtained from 2-amino-1-oxybenzene-4-sulphonic acid-N-phenylamide and 1-acetylamino-7-oxynaphthalene according to a similar method are 3000 parts Slurried water and with 220 parts of a solution of Ehromsalieylsaurem sodium with a chromium content of 2.61 / o ver sets. After boiling for 6 hours on the reverse flow cooler, the chroming is complete.
The chromium compound obtained is deposited by adding sodium chloride and filtered off.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH287106T | 1949-11-18 | ||
CH284075T | 1949-11-18 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH287106A true CH287106A (en) | 1952-11-15 |
Family
ID=25732355
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH287106D CH287106A (en) | 1949-11-18 | 1949-11-18 | Process for the preparation of a chromium-containing azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH287106A (en) |
-
1949
- 1949-11-18 CH CH287106D patent/CH287106A/en unknown
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