CH164741A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH164741A CH164741A CH164741DA CH164741A CH 164741 A CH164741 A CH 164741A CH 164741D A CH164741D A CH 164741DA CH 164741 A CH164741 A CH 164741A
- Authority
- CH
- Switzerland
- Prior art keywords
- naphthylamine
- dye
- sulfonic acid
- azo dye
- production
- 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
- C09B31/16—Trisazo dyes
- C09B31/22—Trisazo dyes from a coupling component "D" containing directive hydroxyl and amino groups
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Zusatzpatent zum Hauptpatent Nr. 162465. Es wurde gefunden, dass man einen neuen Azofarbatoff erhält, wenn man den Disazo- farbstoff, der erhalten wird durch Vereinigen der 2-Diazonaplithaliri-4.8-disrilfosäure mit a-Naphthylainin, Weiterdiazotieren und Ver einigen mit einem Gemisch der 1-Naphthyl- amin-6-sulfosäui@e und der 1-Naphthylamin- 7-sulfosäui,e,
weiter dianotiert und mit 3'.3" Diarnirio-diberizoyl-1.4-diamino-8-oxynaphtha- lin-6-sulfonsäure vereinigt. Der so erhaltene Farbstoff löst sich in Wasser mit blauer Farbe und färbt Baumwolle in blauen Tönen, die durch Diazotieren und Vereinigen mit Phenylmethylpyrazolon grün und waschecht werden.
Beispiel: 15,2 Teile 2-Naphthylamiri-4.8-disulfo- säure werden in üblicher Weise dianotiert, mit a-Naphthylamiri gekuppelt, weiter diano tiert und die Diazoverbindung des Monoazo- farbstoffes durch eventuelles Aussalzen und Filtrieren isoliert.
Man schwemmt sie nun in 1000 'feilen Eiswasser an und lässt dazu eine Lösung von 11,2 Teilen einer Mischung von 1-Naphthylamin-6-sulfosäure und 1-Naphthyl- amin-7-sulfosäure in 200 Teilen Wasser als Natriumsalz gelöst zulaufen, stumpft mit Natriumacetat ab und rührt über Nacht. Der gebildete Disazofarbstoff wird ausgesalzen, ab filtriert und in Eiswasser angeschwemmt.
Hierauf gibt man soviel Natriumhydroxyd- lösung zu, bis der Disazofarbstoff in Lösung geht und dianotiert indirekt mit der berech neten Menge Natriumnitrit und Salzsäure. Nach etwa 2 Stunden ist die Dianotierung beendigt, die Diazoverbindung wird ausge- salzen, abfiltriert und in Eiswasser gut an geschwemmt.
Diese Diazoverbindung des Dis- azofarbstoffes lässt man in eine kalte Lösung aus 24,6 Teilen 3'.3"-Diamino-dibenzoyl-1. 4- diamino-8-oxynaphthalin-6-sulfosäure und 15 Teilen Natriumkarbonat in 500 Teile Wasser einlaufen und einige Stunden rühren. Nach beendeter Kupplung wird der Trisazofarbstoff ausgesalzen und abfiltriert.
Additional patent to main patent no. 162465. It has been found that a new azo carbate is obtained if the disazo dye, which is obtained by combining 2-diazonaplithaliri-4,8-disrilfosäure with α-naphthylainin, further diazotizing and some with a mixture the 1-naphthylamine-6-sulfosäui @ e and the 1-naphthylamine-7-sulfosäui, e,
further dianotized and combined with 3'.3 "diarnirio-diberizoyl-1,4-diamino-8-oxynaphthalin-6-sulfonic acid. The dye thus obtained dissolves in water with a blue color and dyes cotton in blue shades, which by diazotization and Combine with phenylmethylpyrazolone to become green and washable.
Example: 15.2 parts of 2-naphthylamine-4,8-disulfonic acid are dianotized in the usual way, coupled with α-naphthylamine, further dianoated and the diazo compound of the monoazo dye isolated by possible salting out and filtration.
They are then washed up in 1000 'of ice water and allowed to run in a solution of 11.2 parts of a mixture of 1-naphthylamine-6-sulfonic acid and 1-naphthylamine-7-sulfonic acid dissolved in 200 parts of water as the sodium salt, blunt with sodium acetate and stir overnight. The disazo dye formed is salted out, filtered off and washed up in ice water.
Sodium hydroxide solution is then added until the disazo dye goes into solution and dianotized indirectly with the calculated amount of sodium nitrite and hydrochloric acid. The dianotation is complete after about 2 hours, the diazo compound is salted out, filtered off and washed thoroughly in ice water.
This diazo compound of the disazo dye is allowed to run into a cold solution of 24.6 parts of 3'.3 "-diamino-dibenzoyl-1,4-diamino-8-oxynaphthalene-6-sulfonic acid and 15 parts of sodium carbonate in 500 parts of water and Stir for a few hours After the coupling has ended, the trisazo dye is salted out and filtered off.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH164741T | 1932-02-25 | ||
CH162465T | 1932-02-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH164741A true CH164741A (en) | 1933-10-15 |
Family
ID=25717585
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH164741D CH164741A (en) | 1932-02-25 | 1932-02-25 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH164741A (en) |
-
1932
- 1932-02-25 CH CH164741D patent/CH164741A/en unknown
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