CH162740A - Process for the production of a new substantive azo dye. - Google Patents
Process for the production of a new substantive azo dye.Info
- Publication number
- CH162740A CH162740A CH162740DA CH162740A CH 162740 A CH162740 A CH 162740A CH 162740D A CH162740D A CH 162740DA CH 162740 A CH162740 A CH 162740A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- dye
- new
- production
- blue
- 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
- C09B31/08—Disazo dyes from a coupling component "C" containing directive hydroxyl and amino groups
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen direktziehenden Azofarbstoffes. Es wurde gefunden, dass man einen neuen direktziehenden Azofarbstoff erhält, wenn man den Azofarbstoff, der selbst durch Ver einigen von 1-Diazo-2-oxy-4-nitro-5-berrzol- sulfonsäure mit 1-Amino-2. 5-dimethoxybenzol erhalten wird, diazotiert und mit 2-Benzoyl- amino-5-oxynaphtalin-7-sulfonsäure vereinigt.
Der neue Farbstoff bildet ein schwarz blaues Pulver, das Baumwolle in klaren blauen Tönen anfärbt, die durch Nachbehan deln mit kupferabgebenden Mitteln sich nach Grünblau verschieben und sehr gute Licht beständigkeit zeigen.
<I>Beispiel:</I> 234 Teile 1-Amino-2-oxy-4-nitro-5-benzol- sulfonsäure werden in salzsaurer Lösung mit 69 Teilen Natriumnitrit diazotiert. Diese Diazolösung wird mit 188 Teilen des Chlor- hydrates von 1-Amino-2.5-dimethoxybenzol versetzt und durch langsames Zusetzen von Natriumacetat unter Rühren die Kupplung beendet. Der entstandene Farbstoff wird ab filtriert und mit Natriumchlorid gewaschen.
Man löst hierauf den Farbstoff in heissem Wasser und der notwendigen Menge Natrium karbonat, versetzt mit 69 Teilen Natrium- nitrit und giesst die Lösung in eine eiskalte, wässerige Lösung, die 270 Teile 30 0%ige Salzsäure enthält. Die Diazoverbindung des Farbstoffes fällt aus. Sie wird abfiltriert und in eine eiskalte, natriumkarbonathaltige Lö sung von 343 Teilen 2-Benzoylamino-6-ogy- naphtalin-7-sulfonsäure eingetragen.
Nachdem der Farbstoff gebildet ist, wird er abfiltriert und mit Natriumehloridlösung gewaschen und dann getrocknet.
Process for the production of a new substantive azo dye. It has been found that a new substantive azo dye is obtained if the azo dye, which is itself produced by ver some of 1-diazo-2-oxy-4-nitro-5-berrzenesulfonic acid with 1-amino-2. 5-dimethoxybenzene is obtained, diazotized and combined with 2-benzoylamino-5-oxynaphthalene-7-sulfonic acid.
The new dye forms a black-blue powder that dyes cotton in clear blue tones, which after treatment with copper-releasing agents shift to green-blue and show very good light resistance.
<I> Example: </I> 234 parts of 1-amino-2-oxy-4-nitro-5-benzenesulfonic acid are diazotized in hydrochloric acid solution with 69 parts of sodium nitrite. 188 parts of the chlorohydrate of 1-amino-2,5-dimethoxybenzene are added to this diazo solution and the coupling is terminated by slowly adding sodium acetate with stirring. The resulting dye is filtered off and washed with sodium chloride.
The dye is then dissolved in hot water and the necessary amount of sodium carbonate, 69 parts of sodium nitrite are added and the solution is poured into an ice-cold, aqueous solution containing 270 parts of 30% strength hydrochloric acid. The diazo compound of the dye precipitates. It is filtered off and introduced into an ice-cold, sodium carbonate-containing solution of 343 parts of 2-benzoylamino-6-ogynaphthalene-7-sulfonic acid.
After the dye is formed, it is filtered off and washed with sodium chloride solution and then dried.
Claims (1)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH162740T | 1932-09-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH162740A true CH162740A (en) | 1933-07-15 |
Family
ID=4415888
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH162740D CH162740A (en) | 1932-09-07 | 1932-09-07 | Process for the production of a new substantive azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH162740A (en) |
-
1932
- 1932-09-07 CH CH162740D patent/CH162740A/en unknown
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