CH200531A - Process for the production of a new azo dye. - Google Patents
Process for the production of a new azo dye.Info
- Publication number
- CH200531A CH200531A CH200531DA CH200531A CH 200531 A CH200531 A CH 200531A CH 200531D A CH200531D A CH 200531DA CH 200531 A CH200531 A CH 200531A
- Authority
- CH
- Switzerland
- Prior art keywords
- production
- azo dye
- new azo
- new
- dye
- 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
- C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Description
<B>Zusatzpatent</B> zum Hauptpatent Nr. 198138. Verfahren zur Herstellung eines neuen Azofarbstofes. Es wurde gefunden, dass man einen neuen Azofarbstoff erhält, wenn man auf 4-Oxy- 1. 1'-diphenyl diazotierte 4-Amino-1. 1'-azo- benzol-3. 4'-disulfonsäure einwirken lässt.
Der neue Farbstoff stellt ein dunkel braunes Pulver dar, das Wolle in braun stichiggelben Tönen färbt.
<I>Beispiel:</I> 40,1 Teile des Natriumsalzes der 4-Amino- 1.1'-azobenzol-3 . 4'-disulfonsäure werden wie üblich diazotiert. Die entstehende Lösung der diazotierten 4-Amino-1.1'-azobenzol-3.4'- disulfonsäure lässt man einfliessen in eine Lö sung von 17 Teilen 4-0$y-1. 1'-diphenyl in 25 Teilen einer 30%igen Natriumhydroxyd- lösung,
10 Teilen Natriumcarbonat und 300 Teilen Wasser. Es findet Kupplung statt. Man rührt über Nacht, filtriert und dampft zur Trockne ein. Man erhält den Farbstoff als dunkelbraunes Pulver.
<B> Additional patent </B> to main patent no. 198138. Process for the production of a new azo dye. It has been found that a new azo dye is obtained if 4-amino-1-1-diazotized to 4-oxy-1,1'-diphenyl. 1'-azo-benzene-3. 4'-disulfonic acid can act.
The new dye is a dark brown powder that dyes wool in brown pungent yellow tones.
<I> Example: </I> 40.1 parts of the sodium salt of 4-amino-1,1'-azobenzene-3. 4'-disulfonic acid are diazotized as usual. The resulting solution of the diazotized 4-amino-1,1'-azobenzene-3,4'-disulfonic acid is allowed to flow into a solution of 17 parts of 4-0 $ y-1. 1'-diphenyl in 25 parts of a 30% sodium hydroxide solution,
10 parts of sodium carbonate and 300 parts of water. There is coupling. The mixture is stirred overnight, filtered and evaporated to dryness. The dye is obtained as a dark brown powder.
Claims (1)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH198138T | 1936-11-16 | ||
CH200531T | 1936-11-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH200531A true CH200531A (en) | 1938-10-15 |
Family
ID=25723065
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH200531D CH200531A (en) | 1936-11-16 | 1936-11-16 | Process for the production of a new azo dye. |
Country Status (1)
Country | Link |
---|---|
CH (1) | CH200531A (en) |
-
1936
- 1936-11-16 CH CH200531D patent/CH200531A/en unknown
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