CH289588A - Process for the preparation of a polyazo dye. - Google Patents
Process for the preparation of a polyazo dye.Info
- Publication number
- CH289588A CH289588A CH289588DA CH289588A CH 289588 A CH289588 A CH 289588A CH 289588D A CH289588D A CH 289588DA CH 289588 A CH289588 A CH 289588A
- Authority
- CH
- Switzerland
- Prior art keywords
- amino
- dye
- mole
- copper
- complex compound
- 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
- C09B45/24—Disazo or polyazo compounds
- C09B45/28—Disazo or polyazo compounds containing copper
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 284077. Verfahren zur Herstellung eines Polyazofarbstoffes. Gegenstand des vorliegenden Patentes ist ein. Verfahren zur Herstellung eines Polyazo- farbstoffes, welches dadurch gekennzeichnet ist, dass man die durch Diazotieren von 1 Mol 2 - Aminonaphthalin - 6,8 - disulfonsäure und Kuppeln mit 1 Mol 1=Amino-3-methylbenzol erhältliche Zwischenverbindung dianotiert,
mit 1 Mol 1-Amino-2-methoxy-5-methylbenzol kuppelt, den so gewonnenen Amino-disazo- farbstoff dianotiert, mit 1 Mol der Kupfer- kompl.exverbindung des Monoazofarbstoffes der Zusammensetzling
EMI0001.0022
kuppelt und die nunmehr vorliegende Mono kupferkomplexverbindung durch entmethylie- rende Kupferung in die Dikupferkomplex- verbindung
überführt.
Beispiel: 30,3 Teile 2-Aminonaphthalin-6,8-disulfon- säure werden dianotiert und in essigsaurer Lösung mit 10,7 Teilen 1-Amino-3-methylben- zol gekuppelt. Der Aminoazofarbstoff wird erneut dianotiert und die Diazo-azoverbindung in essigsaurer Lösung mit 13,7 Teilen 1-Amino- -methoxy-5-methylbenzol gekuppelt.
Nach dem Weiterdiazotieren kuppelt man die Diazo- disazoverbindung in 50 lo iger wässriger Pyri- dinlösung mit der KupferkompleXve@1Cndt@@ aus 46,8 Teilen des Monoazofarbs'@rofe'- @r Zusammensetzung
EMI0001.0047
Der so erhaltene Tetrakisazofarbstoff wird isoliert und während 24 Stunden in ammo- niakalischer Lösung mit 25 Teilen Kupfersul fat am Rückflusskühler gekocht.
Nach der üblichen Aufarbeitung erhält man ein dunkles Pulver, welches sich in Was ser mit oliver, in konzentrierter Schwefelsäure mit violetter Farbe löst und Baumwolle und Fasern aus regenerierter Cellulose in braun- stichigen Khakitönen färbt. Die Färbungen eignen sich zur Nachbehandlung mit Salzen des zweiwertigen Kupfers, besonders in Ge genwart von Imino- oder Aminogruppen ent haltenden polymeren Substanzen, wie sie z. B. in den Schweizer Patentschriften Nrn. 253709, 61048, 263481 und 263482 beschrieben sind, wobei ihre Nassechtheiten verbessert werden.
<B> Additional patent </B> to main patent no. 284077. Process for the production of a polyazo dye. The present patent is a. Process for the preparation of a polyazo dye which is characterized in that the intermediate compound obtainable by diazotizing 1 mol of 2-aminonaphthalene-6,8-disulfonic acid and coupling with 1 mol of 1 = amino-3-methylbenzene is dianotized,
with 1 mol of 1-amino-2-methoxy-5-methylbenzene, the amino-disazo dye obtained in this way is dianotated, and the composition is coupled with 1 mol of the copper-compl.ex compound of the monoazo dye
EMI0001.0022
couples and the now existing mono copper complex compound by demethylating copper plating into the dicopper complex compound
convicted.
Example: 30.3 parts of 2-aminonaphthalene-6,8-disulphonic acid are dianotized and coupled with 10.7 parts of 1-amino-3-methylbenzene in acetic acid solution. The aminoazo dye is dianotized again and the diazo-azo compound is coupled in acetic acid solution with 13.7 parts of 1-amino-methoxy-5-methylbenzene.
After further diazotization, the diazo-disazo compound is coupled in 50 lo aqueous pyridine solution with the copper complex from 46.8 parts of the monoazo color '@ rofe'- @r composition
EMI0001.0047
The tetrakisazo dye obtained in this way is isolated and refluxed for 24 hours in an ammoniacal solution with 25 parts of copper sulfate.
After the usual work-up, a dark powder is obtained which dissolves in water with an olive color, in concentrated sulfuric acid with a violet color and dyes cotton and fibers made from regenerated cellulose in brownish khaki tones. The dyeings are suitable for aftertreatment with salts of divalent copper, especially in the presence of imino or amino groups ent containing polymeric substances, as they are, for. B. in the Swiss Patent Nos. 253709, 61048, 263481 and 263482 are described, their wet fastnesses are improved.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH284077T | 1952-06-26 | ||
CH289588T | 1952-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH289588A true CH289588A (en) | 1953-03-15 |
Family
ID=25732380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH289588D CH289588A (en) | 1952-06-26 | 1952-06-26 | Process for the preparation of a polyazo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH289588A (en) |
-
1952
- 1952-06-26 CH CH289588D patent/CH289588A/en unknown
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