CH138227A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH138227A CH138227A CH138227DA CH138227A CH 138227 A CH138227 A CH 138227A CH 138227D A CH138227D A CH 138227DA CH 138227 A CH138227 A CH 138227A
- Authority
- CH
- Switzerland
- Prior art keywords
- azo dye
- green
- new azo
- blue
- 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
- C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
- C09B33/02—Disazo dyes
- C09B33/12—Disazo dyes in which the coupling component is a heterocyclic compound
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
Verfahren zur Herstellung eines neuen Azofarbstofes. Es wurde gefunden, dass man einen neuen Farbstoff erhält, wenn man auf 1 Mol des 5,5' -Dioxy-7,7'-disulfo-1,2,2',1'-dinaphthazins 2 ATol diazotiertes p-Nitranilin einwirken lässt.
Der erhaltene Farbstoff ist trocken ein schwärzliches Pulver, löst sich in Wasser braun, in Lauge blaugrün, in verdünnter Sodalösung blauviolett und mit olivegrüner Farbe in konzentrierter Schwefelsäure. Baum wolle wird aus alkalischem Glaubersalzbade, Wolle und Seide aus sauren Bädern, in olive grünen Tönen angefärbt.
<I>Beispiel:</I> Man löst 12 Teile des 5,5'-Dioxy-7,7'-di- sulfo-1,2,2',1'-dinaphthazins mit 4 Teilen Soda in 200 Teilen Wasser und gibt 10 Teile Natriumbiearbonat zu. Darauf versetzt man mit dem Diazokörper aus 7 Teilen p-Nitranilin und kuppelt bei 6-8 bis zum Verschwinden des Diazokörpers. Durch Kochsalz wird der neue Farbstoff abgeschieden.
Process for the preparation of a new azo dye. It has been found that a new dye is obtained if 1 mol of 5,5'-dioxy-7,7'-disulfo-1,2,2 ', 1'-dinaphthazins 2 ATol is allowed to act on diazotized p-nitroaniline .
The dye obtained is a blackish powder when dry, dissolves brown in water, blue-green in lye, blue-violet in dilute soda solution and with an olive-green color in concentrated sulfuric acid. Cotton is made from alkaline Glauber's salt bath, wool and silk from acidic baths, dyed in olive-green tones.
<I> Example: </I> 12 parts of 5,5'-dioxy-7,7'-disulfo-1,2,2 ', 1'-dinaphthazine are dissolved with 4 parts of soda in 200 parts of water and adds 10 parts of sodium carbonate. Then add the diazo body made of 7 parts of p-nitroaniline and couple at 6-8 until the diazo body disappears. The new dye is deposited by means of table salt.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH138227T | 1928-09-08 | ||
CH136650T | 1929-11-30 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH138227A true CH138227A (en) | 1930-02-15 |
Family
ID=25712781
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH138227D CH138227A (en) | 1928-09-08 | 1928-09-08 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH138227A (en) |
-
1928
- 1928-09-08 CH CH138227D patent/CH138227A/en unknown
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